Launch Window Calculator
Know exactly when to launch every seed.
Enter your average last frost date. We count backward and tell you when to start each crop indoors and when it can move outside. Superhots need the longest runway, so they launch first.
Don't know it? Search "last frost date" plus your zip code, or ask your county extension office. Southeast Idaho often lands in mid to late May.
Bars show the indoor run from seed start to transplant. Timings are common rules of thumb. Your greenhouse, varieties, and weather will shift them, so watch the 10-day forecast before transplanting.
Mission briefings
Want a reminder when your window opens?
Drop your zip and we'll send launch reminders for your frost dates, plus the free blueprint.
Transmission received. Welcome aboard.
Your Launch Pad Blueprint is ready.
Download the blueprint (PDF)