Crop Treatment Calendar 2026
Monthly guide to recommended drone application timing for major US crops. Exact timing will vary by region, variety, and weather conditions — always scout fields and consult your agronomist before application.
1January
Orchards
Dormant copper spray for fungal canker and fire blight prevention
2February
Vineyards
Dormant pruning + sulfur application for powdery mildew
Orchards
Pre-bloom copper spray for fire blight and leaf curl
3March
Winter Wheat
Spring herbicide + preventive fungicide (T1 timing)
Orchards
Pink stage fungicide for scab and powdery mildew
Vineyards
Early season copper + sulfur application
4April
Vineyards
First powdery and downy mildew fungicide
Winter Wheat
T2 fungicide at flag leaf — scab and stripe rust
Corn
Pre-emerge herbicide application
Orchards
Codling moth and scab fungicide program begins
5May
Vineyards
Downy mildew and powdery mildew 2-week spray program
Winter Wheat
T3 fungicide at heading — Fusarium head blight
Rice
Pre-emerge herbicide for barnyardgrass control
Soybeans
Pre-emerge herbicide if planting this month
6June
Vineyards
Continue mildew fungicide program (every 10–14 days)
Corn
Post-emerge herbicide + early insecticide for rootworm
Orchards
Codling moth and brown rot fungicide
Cotton
Early season herbicide + plant bug insecticide
7July
Corn
VT/R1 fungicide — Tar Spot, Gray Leaf Spot, Southern Rust
Soybeans
R3 fungicide — White Mold and Frogeye Leaf Spot
Rice
Blast and sheath blight fungicide
Vineyards
Final preventive fungicide applications
8August
Soybeans
R5 fungicide if pressure warrants; aphid insecticide
Cover Crops
Drone seeding into standing corn and soybeans
Cotton
Bollworm and plant bug insecticide
Orchards
Pre-harvest fungicide (observe pre-harvest intervals)
9September
Cover Crops
Continue drone seeding as corn and soybeans mature
Cotton
Defoliant and boll opener application
Winter Wheat
Seedbed prep and planting begins in northern states
Vineyards
Harvest timing + Botrytis spray if pressure warrants
10October
Winter Wheat
Post-emerge herbicide after establishment
Cover Crops
Final seeding window before frost — Great Plains
Orchards
Post-harvest copper spray for disease prevention
11November
Orchards
Dormant copper spray after leaf drop
12December
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Plan next season applications + equipment maintenance and inspection
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