Planting Calculator – Simple Seed‑to‑Harvest Date Estimator

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Seed / Plant type

Choose a plant; Days‑to‑Maturity will auto‑fill.

Planting date

Select the date you sowed or transplanted.

USDA Grow Zone

This helps adjust for average frost dates.

Days to Maturity (optional)

Override if your seed packet lists a different value.

Planting method (optional)

Direct‑sown Transplant

About this planting calculator

This planting calculator is a quick way to estimate when your crops will be ready for harvest. Just choose your crop, planting date, and USDA grow zone. The calculator combines average Days‑to‑Maturity (DTM) with a simple zone adjustment to give you an expected harvest window.

Seed/Plant Type: Pick from the dropdown; it will auto‑fill the typical DTM.
Planting Date: Enter the day you planted seeds or transplants.
USDA Zone: Helps adjust for your climate’s growing length.
Optional DTM Override: Use the value on your seed packet if it differs.
Results: Shows an early‑to‑late harvest window and warns if frost may cut it short.

This is a general guide. Always cross‑check with local gardening knowledge and seed packet instructions for best results.

Planting → Harvest Calculator

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Estimated harvest window

About this planting calculator