TENDCAL
When to sow, plant & harvest.
Pick your USDA zone and your crops. TendCal computes your sowing, transplant and harvest dates from real frost-date math — then shows you this week's garden tasks at a glance.
Right plant, right week — every season.
A tomato started too early gets leggy indoors; kale sown too late never sizes up. TendCal keeps every crop on its own clock so your whole garden stays in rhythm from the first seed to the last harvest.
This Week view
Every garden task that's due, sorted by date — no more guessing what to do today.
Per-crop timeline
Sow indoors → plant out → first harvest, mapped for each crop you grow.
Real frost-date math
Average frost dates for USDA zones 3–10, from extension-guide data — not vibes.
12 core crops
Proven timing for the vegetables most home gardens actually grow.
Cold-hardy aware
Frost-tolerant crops get their extended fall window automatically.
Works offline
Plan right at the garden bed — no signal needed.
Grow more, guess less.
Free to plan your garden. Upgrade only for the full crop library and season history.