Missouri · Landscaping licensing · official-source guide
Missouri licenses no landscaping contractor at state level, and section 327.603 names landscape contractors as exempt from the professional landscape architect provisions. What binds you is the Missouri Department of Agriculture pesticide applicator license if you spray for pay, nursery dealer certification when you install sod and perennial stock, backflow rules on irrigation, and city business licensing.
State-level license
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Verified against agency sources on 2026-10-12. Rules and fees change; confirm with the named authority before relying on this guide.
There is no Missouri state license for a landscaping contractor, a hardscape installer, or a planting crew. Nothing in the state code requires you to hold a credential before you grade a yard, set a retaining wall, lay pavers, build a patio, or plant a bed. The statutes that do touch this work regulate three narrower things: the title of professional landscape architect, the use of pesticides, and the sale of nursery stock. Missouri says the first of those out loud. Section 327.603 protects the title, then states that sections 327.600 to 327.635 shall not be construed to prohibit those persons engaged in nursery occupations, gardeners, landscape contractors, home builders or residential developers from preparing planting plans and items incidental thereto, provided the project scope does not jeopardize the public health, safety and welfare. The word used there is landscape contractors. The statute names your trade and then exempts it. That means the question a Missouri homeowner should be asking you is not which state license you hold. It is which of the attaching credentials your crew actually carries, whether your city license is current, and whether you are insured. The rest of this page covers each of those in the order a working crew hits them. Treat the licensing answer as layered rather than absent. The state layer is thin. The department of agriculture layer is real and carries fees and exams. The city layer in Kansas City and St. Louis is where your right to pull a permit and bill a customer actually lives.
Missouri protects a title, not the trade. Under section 327.603, no person shall practice or offer to practice, or hold himself or herself out as a professional landscape architect or as being able to practice landscape architecture in this state, or use that wording in connection with his or her name, or advertise it, unless licensed under chapter 327. Section 327.629 repeats the point from the other direction. No person shall practice as a professional landscape architect until the board has issued a license or certificate of authority, and no person shall hold themselves out to be a professional landscape architect unless licensed. So the line is about what you call yourself. You may design, sell, and install the work. You may not label yourself with that title or advertise that you practice that profession. Section 327.603 also puts responsible charge on the licensed holders: professional landscape architects shall be in responsible charge of all landscape architectural designs that can affect the health, safety, and welfare of the public within their scope of practice. Two more carve outs matter to a contractor. Employees of the state of Missouri or its political subdivisions are not required to be licensed while performing duties for the state or a subdivision, provided the project does not jeopardize public health, safety and welfare. An architect, professional engineer, or professional land surveyor licensed in Missouri is exempt from licensing as a professional landscape architect, and nothing in that section precludes an architect or professional engineer from performing services inside the definition of landscape architecture.
The scope matters because it tells you which drawings pull your project into licensed territory. Section 327.600 defines professional landscape architecture as the performance of professional services including consultations, research, analysis, planning, design, or responsible supervision in connection with feasibility studies, design surveys, formulation of graphic and written criteria to govern the planning and design of land construction programs, preparation, review, and analysis of master plans for land use and development, production of site plans, grading and drainage plans tied to that work, irrigation plans, planting plans, and construction details, specifications, and reports for land development, design coordination, construction observation, and inspection of the resulting construction for compliance with drawings and specifications. Read the list closely. Irrigation plans and planting plans both sit inside it. The practice definition is narrower than it first looks. The statute defines the practice as the location and arrangement of such tangible objects and features as are necessary to the purposes specified in the definition, but it excludes the design of structures or facilities with separate and self-contained purposes such as are ordinarily included in the practice of engineering or architecture, and it excludes the making of final land plats for official approval or recording. Put the two definitions next to the exemption in section 327.603 and a practical rule falls out. A Missouri landscaping contractor can prepare planting plans and items incidental to them. Once a project reaches master planning, construction documents, or anything that could jeopardize public health, safety and welfare, a licensed professional belongs in responsible charge.
If you want the title rather than the exemption, section 327.612 sets the path. The applicant must hold a degree in landscape architecture from an accredited school of landscape architecture, or possess an education which in the opinion of the board equals or exceeds the education received by a graduate of an accredited school. On top of that the applicant must have acquired at least three years of satisfactory landscape architectural experience after acquiring the degree. Section 327.621 then governs the life of that license: it renews on or before the renewal date if the required fee is paid, the board may set continuing education by rule but cannot require more than thirty hours, and a license not renewed by the date expires and is void until it is reinstated within three months. Then the applicant must have taken and passed all sections of the landscape architectural registration examination administered by the Council of Landscape Architectural Registration Boards. Only after those three conditions are met may the person apply to the board for licensure. That is a degree, three years of post degree experience, and a full national exam. It is a professional track, not a trade track, and it is the reason most Missouri installation companies operate under the statutory exemption instead and bring in a licensed professional when a job calls for one. Section 327.629 adds a reciprocity style allowance worth knowing if you work across the state line. Nothing in sections 327.600 to 327.635 requires licensing of a person or corporation who is offering, but not performing or rendering, landscape architectural services, provided that person or corporation is licensed to practice landscape architecture in the state or country of residence or principal place of business. Offering is treated differently from performing. Performing the work in Missouri still requires the Missouri license.
Missouri does not issue a statewide irrigation contractor or lawn sprinkler license. What governs sprinkler work is the backflow prevention rule written by the Safe Drinking Water Commission at the Department of Natural Resources, found at 10 CSR 60-11.010. That rule applies to all community water systems, and it tells you which assembly your system needs based on the hazard class. Irrigation systems with facilities for injection of pesticides, herbicides or other chemicals, or with provisions for creating back pressure, are listed as Class I backflow hazards. A Class I hazard presents an actual or potential health hazard to customers of the public water system should backflow occur, and the response is a department approved air gap separation or a reduced pressure principle backflow prevention assembly on the customer service line. The rule adds that the assembly may be installed between the customer service line and the irrigation system. Irrigation systems without facilities for injection of pesticides, herbicides or other chemicals are listed instead as Class II backflow hazards, which threaten to degrade water quality, and the minimum protection there is a department approved double check valve assembly. The rule also states that no customer shall cause or allow the construction or maintenance of an unprotected cross-connection. So the fertigation question decides the hardware. If you plumb a chemical injection point into a sprinkler system, you have moved the job into the higher hazard class and the reduced pressure principle assembly becomes the minimum. Missouri only allows double check valve assemblies, reduced pressure principle assemblies, or an approved air gap as containment devices.
Sourcessos.mo.gov 1dnr.mo.gov 2
The credential that does exist on the water side is the backflow prevention assembly tester certification, issued by the Missouri Department of Natural Resources. State regulations require all backflow prevention assemblies to be inspected and tested by certified assembly testers, so if your company wants to sell the annual test on the sprinkler systems it installs, somebody on the payroll needs this. Rule 10 CSR 60-11.030 sets the path. Anyone seeking certification must satisfactorily complete written and performance, meaning hands on, examinations that include questions specific to Missouri backflow prevention rules, provided by either the American Backflow Prevention Association tester certification program or the American Society of Sanitary Engineering. The applicant must also ensure that one of those two bodies notifies the department that the tester passed, and the rule states the department is not liable for any failure of theirs to send that notice. The department describes the hands on portion as covering the testing and diagnosis of each of the three major assemblies, the double check valve, the pressure vacuum breaker, and the reduced pressure principle assembly, under the oversight of an independent proctor. Certification is valid for three years, and recertification is likewise valid for three years. Submitting false information is grounds for denying or revoking certification. The rule carries a reciprocity clause that saves time for crews coming in from another state. Any tester listed with the association or the engineering society may be certified by the department upon notification that the tester has satisfactorily completed an examination on Missouri backflow prevention rules.
Sourcessos.mo.gov 1dnr.mo.gov 2
If your company sprays anything on a customer property for money, the Missouri Pesticide Use Act reaches you, and the Missouri Department of Agriculture administers it through the Bureau of Pesticide Control. The department licenses applicators, dealers, technicians and operators. The tier that fits a landscaping or lawn care company is the certified commercial applicator, defined as able to use, supervise the use of, or determine the need for the use of any pesticide, whether classified for restricted use or for general use, while engaged in the business of using pesticides on the lands of another as a direct service to the public in exchange for a fee or compensation. Note the breadth there. It covers general use products, not only restricted use products, once you are spraying for pay on someone else's land. Getting the license means passing the General Standards of Competence examination, known as CORE, plus at least one category examination, both at Pearson VUE. Then you submit a certified applicator and dealer license application with a license fee of $65, evidence of insurance, and, for the structural categories, verification of education or experience. Licenses expire annually. Renewal is the $65 fee plus a signed renewal card, or online through the department MOPlants system. There is a sixty day grace period after expiration, and renewing inside it after the expiration date costs the original $65 plus a late penalty of twenty five percent. Licenses and certifications are canceled if they are not renewed before the grace period ends.
Sourcesagriculture.mo.gov
The category that matches this trade is Category 3, Ornamental and Turf Pest Control. The Missouri rule defines it as pesticide use, excluding fumigants, relating to the control of pests in the care and maintenance of ornamental trees, shrubs, flowers, and turf. That is the category you sit for after CORE if your work is beds, trees and lawns. Passing scores on department examinations require at least seventy percent. Not everyone on the truck needs to be certified, and the structure matters when you are staffing a spray route. A pesticide technician license covers individuals who use, or determine the need for the use of, general use pesticides only, under the direct supervision of a certified commercial applicator in Ornamental and Turf Pest Control or the structural subcategories. The technician license fee is $35, it expires annually, and it is obtained by completing a preapproved technician training program rather than by examination. The department publishes the outline for the Ornamental and Turf program as MDA-3. A technician must remain under the direct supervision of a certified commercial applicator working for the same business, from the same business location, and certified in the same categories. Technicians must retrain every three years, which can be done by completing the classroom portion of an approved program, a minimum of eight hours, for each licensed category. If an unlicensed helper needs to apply restricted use products, the noncertified restricted use pesticide applicator license, at a $35 fee, is the tier that allows it under direct supervision.
Missouri does not make a landscaping company carry insurance to install a patio, but it does make a commercial spray operation prove coverage before it gets licensed. Section 281.065 says the director shall not issue a certified commercial applicator license until the applicant or the applicant employer has furnished evidence of financial responsibility consisting of either a surety bond or a liability insurance policy, or certification of one, protecting persons who may suffer legal damages as a result of pesticide use by the applicant. The amount is set in the statute. The surety bond or liability insurance shall be not less than fifty thousand dollars for each occurrence, and it shall be maintained at not less than that sum at all times during the licensed period. The policy need not cover damage or injury to the crops, plants or land being worked on by the applicant, which is a real gap to explain to a customer who assumes their new planting is covered. After the initial license, the applicator is not required to furnish evidence again for renewal unless the department requests it, but annual renewals of the bond or policy must be maintained at the business location from which the applicator is licensed and must be available for inspection during regular business hours. On written request, the department must be furnished a copy within ten days. The surety or insurer must notify the director within twenty days before any cancellation or reduction, and an employer providing the coverage must notify the director immediately when the applicator leaves.
Sourcesrevisor.mo.gov
This is the requirement Missouri landscaping companies miss most often, and the Department of Agriculture names the trade directly. The Missouri Plant Law requires each nursery dealer, before selling, offering for sale, or otherwise distributing nursery stock within the state, to obtain a Nursery Dealer Registration Inspection Certificate annually for each individual location from which the dealer sells or offers nursery stock. The department page then says plainly that landscapers typically fall into this category when installing sod and perennial nursery stock. Sod counts. The department states that sod is considered nursery stock in Missouri and the requirements are the same as for other perennial stock. The annual dealer certificate runs from October 1 through September 30. Fees are set by tier. A full dealer certificate is $125 annually and a restricted dealer certificate is $50 annually, with the split turning on the level of annual retail sales of nursery stock the department uses as the cutoff. A nonprofit nursery dealer certificate, for an umbrella organization that oversees membership entities, is $125 annually. A nursery dealer shall obtain and distribute only inspected and certified nursery stock, so your supplier paperwork is part of your compliance. The State Entomologist may inspect the premises, including any sales yard, packing shed, nursery stock on hand, or equipment, for dangerous and destructive insect pests and plant diseases that may be spread on nursery stock. If you grow your own perennial stock for sale or distribution rather than buying it in, nursery grower certification is the separate requirement, with one annual inspection included and a fee based on actual growing area.
Sourcesagriculture.mo.gov
Missouri sets a different workers compensation threshold for construction work than for everything else, and installation crews land on the stricter side of the line. Section 287.030 defines employer, then states that any of the defined employers must have five or more employees to be deemed an employer for purposes of the workers compensation chapter, unless an election is made to come under the chapter. Then comes the exception that matters here. Construction industry employers who erect, demolish, alter or repair improvements shall be deemed an employer for purposes of the chapter if they have one or more employees. A family member within the third degree of affinity or consanguinity is counted in determining the total number of employees. So a hardscape or installation company with a single employee should assume it is inside the system rather than outside it. Both large Missouri cities tie this to your license rather than leaving it to the state alone. Kansas City lists workers compensation proof of insurance or exemption as required for construction companies applying for a business license, and names the certificate of insurance and the specific state forms it accepts. St. Louis tells construction contractors to bring proof of workers compensation coverage or sign a statement that they carry it or are not required by law to have it, and quotes the state requirement that any city or county issuing an occupational or business license for a contractor in the construction industry shall require a certificate of insurance for workers compensation coverage or a signed affidavit of exemption, with the license denied until the certificate is furnished.
Kansas City is where the real gate sits for a crew working the western side of the state. The city states that business licenses are required of any operation that generates revenue, transacts, or employs within city limits, under chapter 40 of the municipal code. Before a business license is issued, a new business must show a Missouri Secretary of State filing, which the city applies to sole proprietorships and partnerships operating under a business name as well as limited liability companies, corporations, limited partnerships and nonprofits, and a federal employer identification number for all incorporated businesses. A Missouri sales tax number is required of retail businesses and businesses with employees in Missouri. There are three ways to file: the city QuickTax system online, the RD-100 registration application by mail, fax or email, or in person at City Hall at 414 East 12th Street, where the license is issued on the spot. The online and paper routes run seven to ten business days. The license is valid for the calendar year in which it is issued and expires on December 31. Renewal opens after January 1 and must be done by the last day of February to avoid penalty, and you report the previous year gross receipts when you renew. A changed business address means a zoning clearance request for the new location, which the city provides at no charge. Separately, contractors performing regulated work must obtain the appropriate licenses before pulling permits or performing work, administered by the Permits Division of City Planning and Development. The sequence is business license, then certificate of qualification, then the contractor license for the business.
St. Louis runs its licensing through the Office of the License Collector, and it routes construction and contracting work into a specific instrument. The city states that a construction or contracting business requires a Construction Industry Contractor Graduated Business License. Any person who engages in any business within the city limits is required to have a business license, and a separate Graduated Business License is required for each business location or each trade name, which the city ties to city ordinance 52030. That last point catches companies that run a maintenance brand and an installation brand from one yard. The filing steps are concrete. If you are selling a product, register with the state of Missouri for a sales tax number and have it before you go to City Hall. Apply at the License Collector office in Room 104 of City Hall, in person for the construction contractor license, and you may download and complete the application in advance. Bring a copy of your current driver license. Bring proof of workers compensation coverage, or expect to sign a statement that you carry it or are not required by law to have it. You also need a clearance from the Collector of Revenue showing city taxes are paid, which the city ties to St. Louis City Revised Code chapter 8.02.010. One rule reaches past your own company: all general contractors are required to furnish a list of the subcontractors on any job to the License Collector. Once clearances and payment are received the license issues, and a check may hold the application several working days.
No Missouri conversation about landscaping compliance is complete without the excavation notice law, because this trade digs for a living and the penalty is the largest number on this page. Section 319.026 requires an excavator to serve notice of intent to excavate to the notification center, either by the toll free number that operates twenty four hours a day and seven days a week or by completing the notice over the internet, at least two working days but not more than ten working days before the expected date of commencing the excavation activity. The notification center then tells you which participants will receive the notice and promptly transmits the details to every participant in the area of excavation. The notice itself has required contents, including the name, address and telephone number of the excavator, the date work is expected to start, the depth of planned excavation, whether explosives are anticipated, the type of excavation planned including whether it is trenchless, your email address and cell number if any, and the name of the person primarily responsible for conducting or managing the excavation. The penalty is in section 319.045. Any person who violates the notice and excavation provisions in any material respect, or who willfully damages an underground facility, is liable to the state for a civil penalty of up to ten thousand dollars for each violation for each day the violation persists, with a maximum of five hundred thousand dollars for any related series of violations. The attorney general or a prosecuting attorney may bring the action.
Missouri has no license number that a landscaping contractor must print on trucks, estimates or a website, because there is no state landscaping license to number. The display and advertising rules that do apply attach to the credentials covered above, and they are specific. On the title side, section 327.603 bars anyone not licensed under chapter 327 from holding out as a professional landscape architect, from using that wording in connection with a name, and from advertising it. Section 327.629 repeats that no person shall hold themselves out to be a professional landscape architect unless licensed. So professional landscape architect, landscape architecture, and anything claiming you practice that profession are off limits unless the board has licensed you. Landscape contractor, landscaping contractor, and plain descriptions of design, installation and maintenance work are not restricted by that chapter. On the pesticide side, the state rule requires certified applicators, licensed pesticide technicians, and licensed noncertified restricted use pesticide applicators to display their licenses at all times in a prominent place at the address printed on the license. The same rule says no certified applicator, licensed noncertified applicator, licensed technician or dealer shall use the license as authority to represent more than one business or employer, which means a shared license across two companies is a violation rather than a shortcut. Certified noncommercial applicators and several other tiers are barred from using the license to solicit business from the public at all. Commercial applicators or their employers must keep records for the use of all pesticides, completed within three business days of use and kept three years in neat and legible condition.
There is no statewide landscaping contractor registry for a homeowner to search, so verification in Missouri means checking the credentials that exist rather than a single license number. The Department of Natural Resources publishes a list of certified backflow prevention assembly testers, and its page explains that state regulations require all backflow prevention assemblies to be inspected and tested by certified assembly testers. The department adds a caveat worth repeating to a customer: the list is not intended as an endorsement, certification or warranty of any company or product. On the pesticide side, the Department of Agriculture runs licensing and renewals through its MOPlants system and requires license holders to display the license in a prominent place at the licensed address, which gives a customer something physical to ask to see. Nursery dealer certification is issued per location by the State Entomologist, so a customer can ask which location certificate covers the yard the sod came from. At the city layer, Kansas City and St. Louis both issue business licenses tied to the calendar or license year, and both tie construction contractors to workers compensation proof, so a current city license is itself evidence. Turn this into an advantage rather than a disclaimer. Lead with what you hold, say which pesticide category covers the work you are quoting, name the nursery dealer certificate behind the plants, and say who on the crew holds the backflow tester certification. In a state that licenses none of this at trade level, the contractor who volunteers the paperwork wins the comparison.
Sourcesdnr.mo.gov 1dnr.mo.gov 2agriculture.mo.gov 3agriculture.mo.gov 4
These are common details other guides publish about Missouri, but we could not verify them from the agency source. Confirm them directly before relying on them.
No. Missouri issues no state landscaping or hardscaping contractor license. Section 327.603 even names landscape contractors, gardeners and nursery occupations as exempt from the landscape architect provisions when preparing planting plans and incidental items. Your obligations come from the pesticide and nursery programs at the Department of Agriculture and from city business licensing.
Not unless the state board has licensed you. Section 327.603 bars an unlicensed person from holding out as a professional landscape architect, using that wording with a name, or advertising it, and section 327.629 says no person shall hold themselves out as one unless licensed. Landscape contractor and landscaping contractor stay available.
A certified commercial applicator license from the Missouri Department of Agriculture. That tier covers using or supervising the use of any pesticide, general use or restricted use, on the lands of another for a fee. It requires the CORE examination plus a category examination at Pearson VUE, a $65 fee, and proof of insurance.
Category 3, Ornamental and Turf Pest Control. The state rule defines it as pesticide use, excluding fumigants, for controlling pests in the care and maintenance of ornamental trees, shrubs, flowers and turf. Department examinations require a passing score of at least seventy percent, and the technician training outline for this category is published as MDA-3.
Section 281.065 requires evidence of financial responsibility before a certified commercial applicator license issues, as either a surety bond or a liability insurance policy of not less than fifty thousand dollars for each occurrence, maintained at that level throughout the licensed period. It need not cover damage to the crops, plants or land being worked on.
The Department of Agriculture says landscapers typically fall into the nursery dealer category when installing sod and perennial nursery stock, and that sod is considered nursery stock in Missouri. The certificate is annual, runs October 1 through September 30, and is required for each individual location from which you sell or offer nursery stock.
No statewide irrigation contractor license exists. What governs the work is 10 CSR 60-11.010 from the Safe Drinking Water Commission. Sprinkler systems with chemical injection or back pressure provisions are Class I hazards needing an approved air gap or reduced pressure principle assembly. Systems without injection are Class II hazards needing a double check valve assembly.
A tester certified by the Missouri Department of Natural Resources. Rule 10 CSR 60-11.030 requires written and hands on examinations, including Missouri specific questions, from the American Backflow Prevention Association or the American Society of Sanitary Engineering. Certification lasts three years. Testers already listed with either body can be certified here after a Missouri rules examination.
Section 281.105 makes violating the pesticide provisions a misdemeanor punishable by a fine of not less than one hundred dollars and not more than five thousand dollars, or jail of thirty days to one year, or both. Section 281.060 separately lets the director assess a civil penalty and deny, suspend, revoke or modify the license.
A city business license, required of any operation that generates revenue, transacts or employs inside city limits. It needs a Secretary of State filing, a federal identification number for incorporated businesses, and workers compensation proof for construction companies. The license runs the calendar year, expires December 31, and renews after January 1 but by the last day of February.
A Construction Industry Contractor Graduated Business License from the Office of the License Collector, filed in person in Room 104 of City Hall. Bring your driver license, workers compensation proof or a signed statement, and a Collector of Revenue clearance. A separate license is required for each business location or trade name, and general contractors must file a subcontractor list.
Section 319.026 requires notice of intent to excavate to the notification center at least two working days, and not more than ten working days, before work starts, by toll free phone or online. Skipping it exposes you to a civil penalty of up to ten thousand dollars per violation per day, capped at five hundred thousand dollars per related series.
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