Annual Legume · 13 varieties

Lima bean

Phaseolus lunatus

Fabaceae — the same plant family as bush bean, pea, pole bean, cowpea and 9 more here. Relatives share pests and diseases, which is why rotation plans group by family.

Lima bean (Phaseolus lunatus) is an annual legume. It wants full sun and pH 5.8–7 soil, with about 1 in of water weekly. It matures in about 65–110 days from sowing. Watch for mexican bean beetle and anthracnose. Below: its full sourced profile from 9 extension sources, plus a planting calendar timed to your frost dates.

Sun Full sun
Water Moderate
Matures 65–110 days — from seed from seed
Mature size 1.5–3 ftest
Spacing 4–6 in
Soil pH 5.8–7
Frost Tender
When to plant lima beantypical · zone 6b
Your zone
…or your ZIP, for your real frost dates

Germinating
Seedlings
Growing
Flowering
Pods filling
Harvest

Typical dates for zone 6b — set your zone or ZIP for yours. This calendar assumes the crop is direct sown. Timing is a guide from the crop's sourced growth stages; confirm with your local frost dates and extension before you sow.

Growing lima beanevery fact says where it came from

What we will not put a number on

We do not give a feeding rate for this crop, and that is deliberate rather than a gap. The figures published by extension services are pounds of nitrogen per acre for a production field — they do not convert safely to a raised bed or a pot without knowing your soil test and your fertilizer's analysis, and guessing errs toward burning roots. It is also why every chart you find online disagrees with the next one.

We give watering as a depth per week rather than gallons per plant, because that is how it is actually measured and how the published figures are written. A gallons-per-plant number depends on your spacing, your soil and whether the plant is in a pot — so it would look more precise than it is.

Site & soil

Sun
Full sun
Soil pH
5.8–7
Soil texture
Well drained
Frost tolerance
Tender

No published figure for the temperature frost starts to hurt it, the temperature that would kill it and a heat limit. We looked — where a number is missing here it is missing from the research, not skipped. The crop’s frost and heat tolerance above still applies.

The plant

Mature height
1.5–3 ftest
Mature spread
1–2 ftest
Growth rate
Moderateest
Spacing in row
4–6 in
Between rows
18–36 in
Planting depth
1–1.5 in
Container size
5 galest
Support
Self-supporting
Grown from
Direct sow

Water & feeding

Water needs
Moderate
Water per week
1 in/wkest
Critical water
Flowering, Pod fill
Feeding
Moderate

Timing & fruiting

Days to maturity
65–110 days from seed
Harvest cues
Pods filling

Planted again for autumn

South Carolina — Piedmont
Jul 1 – Jul 15
South Carolina — Coastal Plain
Jul 15 – Aug 1

Published by the extension service for its own regions, and quoted here for those regions only — converting them would mean assuming a frost date somewhere else. The chart says when, not whether to sow seed or set out plants, so we do not either. Only South Carolina so far.

Sow by
mid Aug typical · zone 6b

65 days to maturity from sowing, counted back from the first frost above. Not published for anywhere in particular: it is your own frost date and this crop's own figure, which is why it works wherever you are. A days-to-maturity figure is a catalog number for a good season rather than a promise, and a cold month moves it.

What tends to go wrongmost-cited first
PestsMexican bean beetleBean leaf beetleAphidsSpider mitesThripsStink bugsCorn earworm
DiseasesAnthracnoseBacterial blightMosaic virusRoot rotRustPowdery mildewCercospora leaf spotDamping off

Compiled from the extensions cited below. Which ones actually show up depends on your region — your extension's local list is the last word.

⚠ Reported toxicityverbatim from cited sources

Lima beans are a food crop and people eat them cooked. We have not recorded an edible part here because the source we read described ornamental striped varieties rather than stating which part of the culinary bean is eaten — so the blank is a gap in our sourcing, not a claim about the bean.

PeopleToxic raw seeds

Recorded exactly as the source states it — not medical or veterinary advice. If a person or animal may have eaten a toxic part, call Poison Control (1-800-222-1222) or your vet / the ASPCA line (888-426-4435).

All 13 varietiesthe ones with their own page are linked
Variety TypeHabit DaysColorDiseaseWhat it is known for
Baby Fordhook Heirloom Baby Lima Bush 60–70 White
Big Mama Heirloom Large Lima Pole 80 Green, White
Christmas Heirloom Large Lima Pole 85–95 Bicolor Pinetree Garden Seeds describes this astakes the heat
Dixie Speckled Butterpea Heirloom Baby Lima Bush 80 Bicolor Harvesting History describes this astakes the heat · gets by on less water
Dr. Martin's Heirloom Large Lima Pole 90–100
Florida Speckled Butter Heirloom Baby Lima Pole 95 Bicolor Harvesting History describes this astakes the heat · gets by on less water
Fordhook 242 Heirloom Large Lima Bush 75 White True Leaf Market describes this astakes the heat · gets by on less water · gives a heavy crop
Henderson's Bush Heirloom Baby Lima Bush 65–85 White
Jackson Wonder Heirloom Baby Lima Bush 60–75 Bicolor True Leaf Market describes this asgets by on less water · gives a heavy crop
King of the Garden Heirloom Large Lima Pole 106 White
Sieva Heirloom Baby Lima Pole 65–80 White
Thorogreen Heirloom Bush 69 Green DOWNY_MILDEW True Leaf Market describes this astakes the heat · gives a heavy crop
Willow Leaf Heirloom Baby Lima Pole 80–95 White, Orange, Red, Purple, Bicolor
Sources9 cited · 7 organizations
  • Clemson Cooperative Extension, Home & Garden Information Center
  • LSU AgCenter (Louisiana Cooperative Extension Service)
  • NC State Extension
  • University of Arkansas System Division of Agriculture, Cooperative Extension
  • University of Delaware Cooperative Extension, Weekly Crop Update
  • University of Maryland Extension
  • Utah State University Extension

We compile bare facts from these university-extension and horticultural sources, never copied prose. 14 of the 19 values on this page carry a citation. The rest are marked est; hover one and it says why — either nobody publishes a figure we could point at, or a person set it and attached no source. Figures vary with climate and seed source; confirm with your local extension before you buy.

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