Seed library

Look up a crop or variety and Heirloom fills in the seed packet for you.

Heirloom has a built-in library of 120 common vegetables, herbs, flowers and fruit, plus 130-odd popular varieties. Each entry has typical timing (when to start indoors, sow or transplant, counted from your last frost), days to maturity, spacing, depth, sun, frost tolerance and a short growing tip.

Fill in a seed packet in seconds

Click + Add Seed Packet and start typing in Find it in the seed library at the top. Typing tom lists Tomato, then Brandywine, Cherokee Purple, Early Girl and other tomatoes, then Tomatillo. Pick one with a tap, or use the arrow keys and Enter.

Heirloom fills in the plant, variety, type, timing, days to maturity, harvest style, days to sprout, depth, spacing, row spacing and a growing note. Every field stays editable: if your packet says something different, change it before you press Save Seed. Pick "any variety" (for example Tomato any variety) when your variety isn't listed.

Crops you plant before last frost

Peas, onions, spinach, kale and other cool-season crops go out before your last frost. The library fills these in as a negative number in Weeks After Last Frost (for example -6 for peas), and the timeline shows "6W Before Last Frost". You can type negative weeks for any seed.

Browse the library

The Library tab (next to Seed Cards) shows every crop as a card with its timing, spacing and popular varieties. Search by name, or filter by Vegetables, Herbs, Flowers or Fruit. Tap + Add or a variety to open the Add Seed Packet form already filled in.

My varieties

Grow a family tomato or a variety that isn't listed? Fill in the Add Seed Packet form the way you grow it and tap ☆ Save to My varieties. Your saved varieties show up first (marked ★ Mine) when you search, and under ★ My varieties in the Library tab, where you can add or remove them. They sync to your account when you're signed in.

Bed planner and timeline

Seeds added from the library carry its timing, so the timeline and seed cards are right from the start. The bed planner uses each seed's spacing and row spacing; if a seed has none, it borrows the library's spacing for that crop.

Where the numbers come from

Values are typical figures compiled from university extension guides and USDA resources, rounded and written in our own words. They're a starting point for most of the US: your seed packet and local extension office come first, and fall or hot-climate plantings can differ. See the list of sources.

Plans

Everyone can browse the library and add from it. On Free that counts toward your 5 seed packets. Saving your own varieties to My varieties is part of Annual and Perennial. See Plans & billing.