The NY neonicotinoid ban expands at the end of December 2026 to cover imidacloprid, thiamethoxam, and acetamiprid for outdoor ornamental and turf use, completing the second phase of New York’s Birds and Bees Protection Act. The first phase, which took effect December 31, 2024, already cleared clothianidin and dinotefuran from the same uses. With less than seven months until the second cutoff, turf and ornamental applicators across the state need to rework their fall and spring programs.
The short version
- Phase 1 (effective December 31, 2024): outdoor ornamental and turf use of clothianidin and dinotefuran products banned.
- Phase 2 (effective December 31, 2026): same ban expands to imidacloprid, thiamethoxam, and acetamiprid.
- The law is administered by NY DEC under Environmental Conservation Law Article 33.
- Treated seed (corn, soy, wheat) is also restricted, but on a separate agricultural timeline.
- Indoor and structural uses, certified golf course applications, and certain pet products are exempt or governed under separate rules.
- Applicators who buy product before the cutoff cannot legally apply it outdoors on ornamentals or turf after December 31, 2026.
What the rule says
New York’s Birds and Bees Protection Act (S.1856-A/A.7640, signed by Governor Kathy Hochul in December 2023) restricts five neonicotinoid active ingredients across two cutoffs. The Department of Environmental Conservation (NY DEC) implements the statute through the Pesticide Product Registration (PPR) database, withdrawing or restricting registrations on schedule.
Phase 1, effective December 31, 2024, removed clothianidin and dinotefuran from the legal product list for outdoor ornamental and turf applications. Products containing these actives are not sellable, not distributable, and not legally applicable for those uses in New York after that date. Phase 2, effective December 31, 2026, applies the same prohibition to imidacloprid, thiamethoxam, and acetamiprid, which are the three highest-volume neonicotinoids in the landscape and turf trade.
The statute defines “outdoor ornamental and turf use” broadly. Lawn care, tree care, golf course rough and fairway treatment, athletic-field maintenance, perennial bed and shrub care, and Christmas tree farms are all in. Greenhouse production for ornamentals is restricted (with limited exceptions for closed indoor systems). Indoor uses (cockroach gels, ant baits, household pest control), pet flea and tick products, and structural pest control are largely outside the statute and continue to be registered under standard FIFRA federal rules.
NY DEC has been signaling enforcement intent through 2026 dealer bulletins, registrant correspondence, and CCA (Certified Crop Adviser) and Category 3A applicator training updates. Civil penalties under ECL Article 33 can reach $5,000 per violation for licensed applicators and up to $25,000 for distributors selling restricted product.
Why it matters for turf and ornamental operators
Imidacloprid is the workhorse soil-drench and trunk-injection insecticide for hemlock woolly adelgid, emerald ash borer (EAB), and a long list of leaf-feeding pests. Thiamethoxam is the most-used granular for grub control on cool-season turf. Acetamiprid (sold under brand names including TriStar and a half-dozen others) is the standard foliar for whiteflies, aphids, and lace bug on ornamentals. Pulling these three products out of the New York applicator’s toolbox in one cutoff is a significant disruption.
The trade has been preparing. Tree-care operators have leaned harder on emamectin benzoate (TREE-age) for EAB injections, dinotefuran already came off the menu in 2024 so that bridge product is gone, and acephate (Orthene) is back in heavier rotation for ornamentals despite its less favorable odor and worker-safety profile. Granular grub control has shifted toward chlorantraniliprole (Acelepryn) and clothianidin replacements like cyantraniliprole, neither of which is a neonicotinoid. Bayer, Syngenta, and FMC have all run NY-specific reformulation cycles in 2025 and 2026 to keep label-compliant alternatives in front of distributors. See our lawn care products guide and professional applicator guide for the broader chemistry context.
The economic impact is real but manageable. A typical $5 million regional lawn-care operator in New York that ran 8,000 grub-control applications a year on thiamethoxam will see per-application chemistry costs rise 20 to 35 percent on the chlorantraniliprole or cyantraniliprole replacement. Tree-care operators doing EAB injection programs will see less change because TREE-age was already the premium choice on most large ash. The biggest pain point is in low-budget homeowner-association tree work where imidacloprid soil drench was the cheap fallback. That option goes away on January 1, 2027.
What applicators should do now
The first step is an inventory audit. Pull product codes on every neonicotinoid SKU in the chemical shed and warehouse. Identify everything containing imidacloprid, thiamethoxam, or acetamiprid as an active ingredient. Pay attention to combination products (many premixed turf insecticide-fertilizer blends and some ornamental drench products contain a neonic plus a non-restricted active). NY DEC has been clear that combination products with any restricted neonic are subject to the ban for the covered uses.
The second step is exit-using existing stock. Product purchased before December 31, 2026 cannot legally be applied to turf or ornamentals outdoors in New York after the cutoff. Plan applications across the 2026 season to draw down inventory. Returns to distributors are possible in some cases (Bayer and Syngenta have run buyback programs in New York), but the windows are narrow and not all SKUs qualify.
The third step is reformulating your 2027 program with substitutes. The University of Cornell turfgrass and ornamental program has published replacement-product tables that match common pest targets to non-neonicotinoid alternatives. The American Society of Consulting Arborists (ASCA) New York chapter has done similar work for tree care. Train technicians on the new chemistry, the new mixing rates, and the new PPE requirements (some replacements have stricter REI windows).
The fourth step is updating customer communications. Many residential and commercial clients chose your firm specifically because of integrated pest management programs that featured low-impact actives. Marketing the move away from neonicotinoids as a pollinator-protection upgrade rather than a regulatory squeeze plays well with most customer segments.
By the numbers
| Active ingredient | Common brands | NY ban effective date |
|---|---|---|
| Clothianidin | Arena, Aloft GC | December 31, 2024 |
| Dinotefuran | Safari, Zylam | December 31, 2024 |
| Imidacloprid | Merit, Allectus, Mallet, Marathon | December 31, 2026 |
| Thiamethoxam | Meridian, Flagship | December 31, 2026 |
| Acetamiprid | TriStar | December 31, 2026 |
Background and context
New York is the first state to pass a comprehensive neonicotinoid ban that includes turf and ornamental uses alongside treated-seed restrictions. The legislative push grew out of multi-year data from Cornell, Penn State, and the EPA’s Pollinator Risk Assessment Framework showing measurable effects on honeybees, native bees, and aquatic invertebrates from systemic neonics applied outdoors. The 2023 EPA biological evaluations of imidacloprid, thiamethoxam, and clothianidin under the Endangered Species Act flagged “likely to adversely affect” findings for hundreds of listed species, which gave New York’s bill drafters strong cover.
Other states are watching. New Jersey’s Senate Bill 1016 covers a narrower set of uses but takes a similar phased approach. Vermont, Massachusetts, and Maine all have pending legislation that mirrors the New York framework. The federal EPA registration review for imidacloprid is ongoing and expected to issue interim decisions through 2026 and 2027, but state-level action is moving faster than federal rule-writing. See our EPA glyphosate registration review coverage for parallel federal pesticide developments.
FAQ
Can I still apply imidacloprid to indoor pests?
Yes. The Birds and Bees Protection Act targets outdoor ornamental and turf uses specifically. Indoor pest control, structural pest control, and pet products are largely outside the statute and continue under federal FIFRA registration.
What about treated seed?
Treated agricultural seed (primarily corn, soy, and wheat) is also restricted under the same statute but on a separate timeline and with different exemption provisions for commercial seed dealers. The turf and ornamental cutoff is the December 31, 2026 milestone discussed here.
Are golf courses exempt?
Golf course turf is covered by the ban for fairways, roughs, and tee boxes. Limited certified-use exceptions for greens may be allowed under DEC permit, but the practical industry response has been to convert programs to non-neonicotinoid actives across the entire course.
What replaces imidacloprid for grub control?
Chlorantraniliprole (Acelepryn) is the most-used replacement on cool-season turf in the Northeast. Cyantraniliprole is also registered. Both are diamides, not neonicotinoids, and have low bee toxicity. They are more expensive per application but offer comparable curative and preventive performance.
What replaces imidacloprid for hemlock woolly adelgid and EAB?
For EAB, emamectin benzoate (TREE-age) is the gold standard and was already the preferred treatment for high-value ash. For HWA, horticultural oil sprays and Beauveria bassiana-based biologicals are the most-used replacements, with significant performance gaps that the trade is still working through.
Bottom line
December 31, 2026 is a hard regulatory wall for New York turf and ornamental applicators, and the chemistry replacements are real but more expensive and in some cases less effective. The operators who win the 2027 season are the ones who have already drawn down their neonic inventory, retrained their technicians, repriced their programs, and communicated the change to clients. See our regulatory pillar for the full state-by-state pesticide landscape and the professional applicator guide for parallel coverage of the herbicide rulebook, plus California’s SB 1157 deadlines for the other major state-level pressure point on the trade.