Orchard growers often rely on anti-desiccants to shield their crops from unexpected cold snaps, which can otherwise devastate fruit yields and lead to overnight losses worth thousands of dollars in frost-prone regions.
green, half-brown — a reminder of where the nozzle missed. PROTECTING FRUIT FROM FROST Anti-desiccants can even help orchard growers salvage crops during sudden cold snaps. In fruit-bearing regions, early frost can mean thousands of dol- lars lost overnight.
woods, and laurels — often emerge from winter with leaves scorched brown along the edges. Anti-desiccants can prevent this by reducing water loss. Coniferous evergreens such as pine and yew also respond well. But Mayberry warned against treat- ing waxy-needled species like blue spruce, whose natural coating al- ready resists moisture loss. Younger, more tender plants should also be left untreated until they mature. PROPER APPLICATION IS CRITICAL Applying an anti-desiccant is not a quick spritz — it requires soaking the plant until every surface glistens. “You want to get a nice, even applica- tion over the plants,” said Mark Ware, technical support at Rainbow Ecosci- ence . “Anywhere you miss, you’ll have damage.” The image is clear: a shrub sprayed unevenly will come out of winter half-
“They form barriers so the water crys- tals don’t expand on the fruit,” ex- plained Bill Stringfellow, president of Quest Products . In other words, the coating prevents the damaging freeze- thaw cycle that bursts fruit cells. “You’re making the skin of the fruit stronger and more elastic,” Stringfellow said, describing apples and pears that hold their shape even when frost settles
Pro Tips for Using Anti-Desiccants
• Check the forecast first. Apply only when temperatures are in the 40s–50s and rain is not expected. • Spray for full coverage. Apply until plants are dripping wet — missed spots are vulnerable spots. • Time it right. Start in late fall or early winter before harsh conditions arrive. • Reapply regularly. Every 4-6 weeks is ideal for season-long protection. • Know your species. Broadleaf evergreens and some conifers benefit most; avoid waxy-needled evergreens like blue spruce. • Think beyond winter. Anti-desiccants can also help during droughts and transplants.
52 | Fall 2025 ArborTIMES ™
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