Estimate when to plant seeds, transplant seedlings, direct sow outdoors, start seeds indoors, and plan fall crops. Use frost dates, crop type, planting buffers, days to maturity, indoor starting time, and succession planting intervals.
Spring transplant mode:
The calculator adds your planting buffer to the last frost date to estimate a safe transplant date.
Spring direct sow mode:
The calculator adds or subtracts days from your last frost date to estimate outdoor direct sow timing.
Indoor seed starting mode:
The calculator finds the outdoor planting date, then counts backward by the number of indoor starting weeks.
Fall planting mode:
The calculator counts backward from your first fall frost date using days to maturity and a harvest buffer.
A planting date calculator helps plan when to sow seeds, transplant seedlings, start seeds indoors, and schedule fall crops.
It can help avoid frost damage, reduce leggy seedlings, plan harvest timing, organize succession plantings, and choose planting windows based on crop type and local frost dates.
Your result shows estimated planting date, seed starting date, direct sow date, germination date, hardening-off date, transplant-ready date, harvest date, fall planting date, and succession planting dates.
Use your last frost date for spring planting or your first frost date for fall planting. Add or subtract the crop’s planting buffer, indoor starting time, or maturity days.
The planting date is when the crop goes outdoors. The seed starting date is when seeds are started indoors before they are transplanted outside.
Start with your first fall frost date, then subtract days to maturity and a harvest buffer. This estimates the latest practical planting date for a fall crop.
Hardening off means gradually exposing indoor seedlings to outdoor conditions before transplanting them into the garden.
No. This is an estimate. Actual planting dates can vary by weather, soil temperature, frost risk, crop variety, seed age, sunlight, microclimate, and local growing conditions.