Seasonal Crop Calendar
Plan your spray applications with confidence. See ideal timing windows for herbicides, fungicides, and insecticides across the growing season for major row crops.
Coming Up This Season
Peak application windows in the next 60 days
Application Types
Filter by Crop
Regional Adjustments
Calendar dates shown are baseline estimates for the central U.S. Adjust timing based on your specific region:
Upper Midwest
MN, WI, ND, SD, IA
Shift all dates 1-2 weeks later due to shorter growing season
Southern Plains
TX, OK, KS
Shift dates 2-3 weeks earlier; watch for early-season heat stress
Delta Region
MS, AR, LA
Extended spray windows; higher disease pressure requires more fungicide passes
Corn Belt
IL, IN, OH, NE
Calendar dates are baseline; adjust based on GDD accumulation
Understanding Spray Timing
Getting the timing right is often more important than the product you choose.
Why timing matters
Applying herbicides, fungicides, or insecticides at the wrong growth stage can reduce efficacy by 50% or more. Weeds are easier to kill when small, diseases are easier to prevent than cure, and insects cause the most damage at specific life stages.
Growth stage vs. calendar date
Plants don't read calendars. A cool spring can delay corn development by 2-3 weeks. Use Growing Degree Days (GDD) and field scouting to confirm growth stage before spraying.
Weather windows are narrow
The ideal spray window might only last 2-3 days. Wind, rain, and temperature inversions can close that window quickly. Having a flexible application partner helps you capitalize on good conditions.
Product-specific timing
Different products have different timing requirements. Contact herbicides work best on small weeds, while systemic fungicides need time to translocate before disease pressure peaks.
Request a Program Quote
Tell us about your operation and we'll put together a custom seasonal program estimate. No pressure, no obligation — just clear pricing based on your actual needs.
Need help hitting your spray windows?
Weather doesn't wait. When conditions align, our drone fleet can cover your acres quickly and precisely — even when ground rigs can't get in.
Questions? Call us at (555) 123-4567
This calendar provides general guidance based on typical growing conditions in the central U.S. Always consult product labels, local extension services, and current field conditions before making application decisions. Actual timing may vary based on weather, variety, and local factors.