Lima Bean Seeds – Phaseolus lunatus
Phaseolus lunatus • Fabaceae • Native to Peru / Central America
Lima Bean Seeds grow into warm-season bean plants that produce flat pods filled with creamy, tender beans. A useful choice for vegetable gardens, raised beds, trellises, and fresh homegrown cooking.
Plant Name: Lima Bean Seeds
Quantity: 100 Seeds
Selected: Lima Bean Seeds / 100 Seeds
Germination depends on soil, temperature, moisture, and care. See our return policy for details.
At a glance
Lima beans are highly sensitive to cold soil and will rot in the ground if planted before soil temperatures reach a steady 65 degrees Fahrenheit, so resist the urge to plant early even when spring weather feels warm on the surface.
Botanical profile
Meet the Lima Bean – Phaseolus lunatus
Step-by-step planting
Growing lima beans is straightforward when you work with their preferences rather than against them, and understanding a few key habits of this plant will carry you from planting to harvest with minimal frustration.
-
1
Wait for Warm Soil
Use a soil thermometer to confirm your planting area has reached at least 65 to 70 degrees Fahrenheit at a 2-inch depth before sowing, which typically falls 2 to 3 weeks after your last frost date in most climates.
-
2
Choose Your Type
Decide between pole and bush lima bean varieties before planting since pole types climb 8 to 12 feet and need sturdy support but produce over a longer season, while bush types stay compact around 2 feet and work well for lima bean container gardens or smaller spaces.
-
3
Prepare the Planting Site
Select a spot with full sun (at least 6 to 8 hours daily) and loosen the soil 8 to 10 inches deep, working in compost if your ground is heavy clay, since lima beans need good drainage to avoid root rot.
-
4
Sow at the Right Depth
Plant seeds 1 to 1.5 inches deep with the eye of the seed facing down, spacing bush types 4 to 6 inches apart in rows 24 to 30 inches apart, and pole types 6 to 8 inches apart around their support structure.
-
5
Water Thoughtfully
Keep the soil consistently moist but never waterlogged after sowing, watering at the base of plants rather than overhead, since wet foliage combined with humid conditions invites fungal disease in this warm season crop.
-
6
Feed Lightly
Because lima beans fix their own nitrogen through root bacteria, avoid heavy nitrogen fertilizers that push lush leafy growth at the expense of pod production, and instead side-dress with a low-nitrogen balanced fertilizer once plants are 6 inches tall.
-
7
Harvest at the Right Moment
Pick pods when the beans have visibly swelled and the pod feels firm and slightly spongy, which is the fresh-shell stage where flavor is richest, and harvest regularly to encourage the plant to keep producing rather than going to seed.
Year-round care
Spring
- Sow after last frost
- prepare soil with compost
Summer
- Water regularly
- feed monthly
Fall
- Harvest before frost
- store well
Winter
- Rest
- store seeds cool and dry
Full specifications
Shipping
- Orders are delivered within 8 to 16 business days.
- All orders include tracking.
- Free shipping on all orders.
- Seeds are packed in moisture-resistant, resealable foil packets.
Germination
Germination rates vary depending on climate, soil conditions, and care. Seeds perform best when planted in the right season at the correct temperature, with consistent moisture and adequate light. We take quality seriously and each batch is tested before packaging. If you have concerns about your seeds, reach out and we will do our best to help.
Frequently asked
Questions about Lima Bean Seeds – Phaseolus lunatus
When should I plant lima bean seeds outdoors?
Plant after your last frost date has passed and soil temperatures have stabilized at 65 degrees or above. In most parts of the US, this means late May to early June in northern zones and as early as March or April in warmer southern regions. Lima bean planting tips consistently point to soil temperature as the deciding factor, not air temperature alone.
How deep should lima bean seeds be planted?
Sow lima bean seeds 1 to 1.5 inches deep, pressing them gently into moist, loose soil with the hilum (the small scar on the seed) facing downward to encourage a straight taproot. Planting too shallow exposes seeds to drying out between waterings, while going much deeper than 2 inches can slow or prevent sprouting in cooler soils.
Do lima beans need a trellis or support?
This depends entirely on which type you are growing. Bush lima beans are self-supporting and stay low to the ground, making them well-suited for raised beds and lima bean container gardens. Pole lima beans are vigorous climbers that need a trellis, fence, or sturdy stakes reaching at least 6 to 8 feet tall, and providing that support from day one saves the plants from sprawling and reduces disease pressure.
Are raw lima beans safe to eat?
Raw or undercooked lima beans contain linamarin, a compound that can release cyanide during digestion, so they should never be eaten raw. Thorough cooking, whether by boiling, steaming, or other methods, breaks down these compounds and makes the beans completely safe to eat. Dried lima beans sold for planting are not treated or prepared for consumption and should always be cooked before eating.
How long do lima beans take to germinate?
Lima bean germination typically occurs somewhere between 7 and 18 days after planting, though this range can shift depending on soil temperature, moisture consistency, seed quality, and how well-drained your planting site is. Seeds sown in soil at the low end of the acceptable temperature range will sprout more slowly than those in warm, well-prepared ground. If you see no signs of sprouting after 2 to 3 weeks, dig down gently to check whether seeds have rotted due to cold or waterlogged conditions.
Can I grow lima beans in containers?
Yes, with some planning, a lima bean container garden is entirely workable, particularly with compact bush varieties. Choose a container at least 12 inches deep and 12 to 14 inches wide, use a well-draining potting mix, and place it where it will receive full sun for most of the day. Keep in mind that containers dry out faster than in-ground beds, so consistent watering becomes even more important to support steady pod development.
What soil pH is best for lima beans?
Lima beans prefer a soil pH in the range of 6.0 to 6.8, which is mildly acidic to nearly neutral. Within this range, the soil bacteria that help the plant fix nitrogen function well and key nutrients remain available to the roots. If your soil tests below 6.0, adding agricultural lime a few weeks before planting can help bring it into the right range.