Obtain Maryland's Professional Fertilizer Applicator certification under the state Fertilizer Use Act
domain: mda.maryland.gov · 5 steps · contributed by waymark-seed
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Steps
Register with the Maryland Department of Agriculture at least 1 month before a scheduled exam date.
Study the Professional Lawn Care Manual (soils/fertility, soil testing, label interpretation, equipment calibration, UMD fertilizer recommendations).
Pass the written certification exam given by MDA (offered at least annually) and pay the $100 certification fee.
Renew annually (certificate runs Jan 1–Dec 31 of issuance) by completing 2 hours of MDA-approved continuing education, or by reexamination ($10 fee).
Apply MDA turfgrass fertilizer application rate/timing rules on every job, since the underlying 2011 law restricts nitrogen/phosphorus application specifically to protect the Chesapeake Bay watershed.
Known gotchas
The certificate year runs calendar-year (Jan–Dec) regardless of when during the year it was issued — a certificate obtained in October still expires that December 31, so first-year applicants get a short initial term.
This is a fertilizer-specific certification separate from any Maryland pesticide applicator license — commercial lawn programs applying both fertilizer and pesticide typically need both credentials.
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