891 varieties across 14 crops. Every distance appears twice: once in metres, and again in feet (inches below three feet), so the file is usable whichever system you garden in.

Columns

name, crop, latin, seed_type (heirloom / hybrid / open-pollinated), days_to_harvest, days_to_germinate, spacing_m, spacing_ft, height_m, height_ft, soil_ph, size, difficulty, usda_zone_min, usda_zone_max, sun, water, url. The *_source columns keep the original published wording wherever a figure could not be converted to a number.

Varieties per crop

CropVarietiesPage
Lettuce110Compare
Herbs104Compare
Tomatoes91Compare
Beans84Compare
Brassicas79Compare
Peppers73Compare
Squash60Compare
Microgreens57Compare
Root Vegetables56Compare
Alliums44Compare
Melons38Compare
Peas35Compare
Cucumbers31Compare
Eggplants29Compare

Isolation distances

Pollen travels further than most gardens are wide. Both units are given because the metric figure is what seed-saving references use, and the imperial one is what a plot actually gets measured in.

CropIsolation (m)Isolation (ft)Seed life
Lettuce3–6 m9.8–20 ft3–4 years
Herbs150–800 m492–2,625 ft2–5 years
Tomatoes3–10 m9.8–33 ft4–6 years
Beans3–5 m9.8–16 ft4–6 years
Brassicas800 m–1.6 km2,625–5,249 ft4–5 years
Peppers30–60 m98–197 ft3–4 years
Squash500 m–1 km1,640–3,281 ft4–6 years
Microgreens——Use fresh
Root Vegetables500 m–1 km1,640–3,281 ft3–4 years
Alliums800 m–1.6 km2,625–5,249 ft1–2 years
Melons500 m–1 km1,640–3,281 ft5–8 years
Peas3–5 m9.8–16 ft4–6 years
Cucumbers500 m–1 km1,640–3,281 ft5–10 years
Eggplants30–50 m98–164 ft4–6 years

Licence

Released under Creative Commons Attribution 4.0. Use it, republish it, build on it, sell what you build. The only condition is credit: “Seed variety data from DarkGrow Seed Bank (seedbank.dirvenbank.com), CC BY 4.0.”

Germination and spacing figures are typical values published for the variety, not certificates for a specific seed lot. Heights and spacings marked “up to” describe a ceiling rather than a range from zero.