Lima Beans
Quick Facts
- Family
- Legume (Fabaceae)
- Sun
- Full sun (6+ hrs)
- Spacing
- 4-6"
- Days to Maturity
- 65-90 days
- Sowing
- Direct-sow
- Frost-Hardy
- No - tender, plant after last frost
Lima beans genuinely want more sustained heat than the common bush and pole bean varieties on this site, and they take noticeably longer to mature - 65-90 days against 50-70 for most other beans - which combines to make lima beans a considerably fussier crop for gardeners in shorter or cooler-summer zones than the more forgiving bean varieties elsewhere on this reference.
Real Heat Requirements, Genuinely
Lima bean seed germinates poorly in cool soil and the plant sets pods unreliably during cool stretches even once established - waiting for soil to reach genuine, consistent summer warmth before sowing, rather than direct-sowing at the same time as more cold-tolerant beans, meaningfully improves germination rates and overall plant vigor for the rest of the season.
Bush and Pole Types Both Exist
Like common beans, lima beans come in both compact bush varieties needing no support and vining pole varieties needing a real trellis - the choice between them follows the same practical logic as choosing between bush and pole common beans, with pole types generally producing more per square foot over a longer window in exchange for needing real vertical infrastructure.
Companions: Sweet Corn, the Same Real Mechanism
Corn's heavy nitrogen appetite and a legume's root-nodule bacteria are the same real physiological match underlying the Three Sisters system generally, and lima beans supply it just as any bean would, whether or not the specific pairing has been tested in isolation. Given how much less common lima beans are in home gardens than bush or pole types, we don't have a second pairing to report with confidence for this specific crop yet.
Shelling: A Real Extra Step
Unlike snap or snow peas and most common green beans, lima beans are typically shelled before eating rather than eaten pod and all - the pod itself is tough and generally not palatable, so harvest is judged by the size and fullness of the beans inside the pod rather than the pod's own appearance, which takes some adjustment for gardeners used to judging bean readiness by pod size alone.
Reading Ripeness Through the Pod
A ripe lima bean pod feels genuinely full and slightly bumpy where the beans inside have filled out, rather than flat - gently squeezing a sample pod to check for this fullness before committing to a full harvest avoids picking too early, when beans inside are still small and underdeveloped despite the pod itself looking reasonably sized.
A Genuinely Long Wait Rewarded With Storage Value
The long maturity window is a real tradeoff against a genuine benefit: dried lima beans, left on the vine to fully mature and dry rather than harvested fresh, store for a very long time in a sealed container - a reasonable option in a zone with a long enough season to let the crop dry naturally before the first fall frost arrives.
A Genuinely Divisive Vegetable Worth Fresh-Trying
Fresh, homegrown lima beans taste noticeably different from the frozen or canned versions most people's opinions of the vegetable were formed by - milder, creamier, and less mealy - and it's genuinely worth growing a small trial patch even if you think you dislike lima beans, since the store-bought version most people know bears only a loose resemblance to a freshly harvested one.
Companion Pairings
Frequently Asked Questions
Does soaking lima bean seed before planting help it come up faster?
It can help somewhat, but only in already-warm soil - soaking seed for a few hours softens the seed coat and can speed emergence slightly, though it does nothing to fix the underlying problem of cold soil, and a soaked seed sown into ground that's still too cool can actually rot faster than a dry one would. Warm soil matters far more than any pre-soaking step for this particular crop.
Can I freeze fresh lima beans the same way I'd freeze other beans?
Yes, and blanching first matters even more here than for some other beans - shelling the beans out of the pod, blanching them briefly in boiling water, then freezing preserves both color and texture noticeably better than freezing raw shelled beans, which tend to turn mealy and dull after thawing.
What's the difference between baby lima beans and the larger butter bean type sold at some nurseries?
They're the same species grown for different seed sizes - baby limas are smaller-seeded varieties that tend to mature a bit faster and are often considered milder in flavor, while butter beans are large-seeded varieties prized for their creamier texture once cooked. Both are grown and harvested identically, so the choice is really about seed size and flavor preference rather than any difference in care.
Are lima beans as prone to Mexican bean beetle damage as other bean types?
Yes, just as susceptible - lima beans get no particular pass from this pest, so checking leaf undersides regularly for the distinctive yellow egg clusters and orange, spiny larvae is worth doing here too, especially given how much longer lima beans stay in the ground than a quicker bush bean crop, which gives the beetles more time to build up a real population.