Reference
Landscape Architect seal requirements by state
Seal requirements for landscape architects, state by state. Most states license landscape architects under their own board, with seal rules separate from the architects'.
Each entry gives the licensing board, the wording the requirements set for the seal, the diameter they set, and whether an expiration date, a signature date or a city has to appear — with a link to the provision it comes from.
| Jurisdiction | Landscape Architect legend | Diameter | Expiration date | Signature date | City on seal |
|---|---|---|---|---|---|
| Alabama | “State of Alabama, Registered Landscape Architect” | 2 in | No | Yes | No |
| Alaska | “State of Alaska, Registered Professional Landscape Architect” | no size specified | No | Yes | No |
| Arizona | “Registered Professional Landscape Architect, Arizona U.S.A.” | 1½ in | No | Yes | No |
| Arkansas | “Registered Landscape Architect – State of Arkansas” | 1½ in | No | Yes | No |
| California | “licensed landscape architect, State of California” | 1–2 in | Yes | Yes | No |
| Colorado | “STATE OF COLORADO, LICENSED LANDSCAPE ARCHITECT” | 2 in | No | Yes | No |
| Connecticut | “licensed landscape architect, state of Connecticut” | no size specified | No | No | No |
| Delaware | “Registered Landscape Architect, State of Delaware” | 1-13/16 in | No | No | No |
| District of Columbia | “District of Columbia, Landscape Architect” | no size specified | No | Yes | No |
| Florida | “STATE OF FLORIDA, LANDSCAPE ARCHITECT” | no size specified | No | Yes | No |
| Georgia | “Registered Landscape Architect” | no size specified | No | No | No |
| Hawaii | “Hawaii, U.S.A., Licensed Professional Landscape Architect” | 1½ in | Yes | No | No |
| Idaho | “Licensed Landscape Architect, State of Idaho” | 1¾ in | No | Yes | No |
| Illinois | “Registered Landscape Architect, State of Illinois” | no size specified | No | No | No |
| Indiana | “Registered Landscape Architect State of Indiana” | 1⅝–1⅞ in | No | No | No |
| Iowa | “Professional Landscape Architect, State of Iowa” | 1¾ in | Yes | Yes | No |
| Kansas | “LICENSED, KANSAS, LANDSCAPE ARCHITECT” | 1⅝ in | No | Yes | No |
| Kentucky | “State of Kentucky, Licensed Landscape Architect” | 2 in | No | No | No |
| Louisiana | “State of Louisiana, Licensed Landscape Architect” | 1⅝ in | No | No | No |
| Maine | — | no size specified | No | No | No |
| Maryland | — | no size specified | No | Yes | No |
| Massachusetts | “MASSACHUSETTS ... REGISTERED LANDSCAPE ARCHITECT” | no size specified | No | Yes | No |
| Michigan | “licensed landscape architect, state of Michigan” | no size specified | No | No | No |
| Minnesota | “licensed landscape architect” | no size specified | No | Yes | No |
| Missouri | “State of Missouri, Professional Landscape Architect” | 1¾ in | No | Yes | No |
| Montana | “Licensed Landscape Architect, State of Montana” | no size specified | No | No | No |
| Nebraska | “State of Nebraska, Professional Landscape Architect” | no size specified | No | Yes | No |
| Nevada | “landscape architect” | no size specified | Yes | Yes | No |
| New Hampshire | “Licensed Landscape Architect, State of New Hampshire” | 1⅞ in | No | Yes | No |
| New Mexico | “registered landscape architect state of New Mexico” | no size specified | No | No | No |
| New York | “Registered Landscape Architect, State of New York” | 1¾ in | No | No | No |
| North Carolina | “North Carolina Registered Landscape Architect” | no size specified | No | Yes | No |
| North Dakota | “LICENSED LANDSCAPE ARCHITECT - STATE OF NORTH DAKOTA” | 1½–2 in | No | Yes | No |
| Ohio | “landscape architect” | 2 in | No | No | No |
| Oklahoma | “Licensed Landscape Architect” | no size specified | No | Yes | No |
| Oregon | “REGISTERED LANDSCAPE ARCHITECT” | 1⅝ in | Yes | No | No |
| Pennsylvania | “Registered Landscape Architect” | no size specified | No | No | No |
| Rhode Island | “Registered Landscape Architect” | no size specified | No | Yes | No |
| South Dakota | “Landscape Architect” | 1–2 in | No | Yes | No |
| Tennessee | “Registered Landscape Architect, Tennessee” | no size specified | No | Yes | No |
| Texas | “Registered Landscape Architect, State of Texas” | min 1½ in | No | Yes | No |
| Utah | “State of Utah, Licensed Landscape Architect” | min 1½ in | No | Yes | No |
| Vermont | — | no size specified | No | No | No |
| Virginia | “Commonwealth of Virginia, Landscape Architect” | 2 in | No | Yes | No |
| Washington | “Licensed landscape architect, state of Washington” | no size specified | Yes | No | No |
| Wisconsin | “Wisconsin, Landscape Architect” | 1⅝–2 in | No | Yes | Yes |
| Wyoming | “LICENSED LANDSCAPE ARCHITECT-STATE OF WYOMING” | 1½–2 in | No | Yes | No |