Phaseolus lunatus

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Phaseolus lunatus
Light:Full Sun
Moisture:Mesic
Hardiness:10
Soil pH:5.6-8.4
Blooms:Mid Summer-Early Fall
Native to:
Nitrogen Fixer
Edible Rating:PFAF Edibility RatingPFAF Edibility Rating
Medicinal Rating:PFAF Medicinal RatingPFAF Medicinal Rating
Tea:Yes
Poisonous

Phaseolus lunatus (common name: lima bean)

Propagation: Pre-soak the seed for 12 hours in warm water and sow in mid spring in a greenhouse. Germination should take place within 10 days. When they are large enough to handle, prick the seedlings out into individual pots and plant them out after the last expected frosts.

Cultivation: Requires a well-drained moderately fertile soil in a sunny position. Plants are prone to drop their flowers when grown in nitrogen-rich soils[1].

The Lima bean is commonly cultivated for its edible seed and seedpods in tropical and warm temperate areas of the world, there are many named varieties[2][1]. The plants are very frost tender and are even less tolerant of wet and cold than the runner bean, Phaseolus coccineus[1]. There are bush and climbing forms, the climbers are more productive but bush forms come into bearing more quickly and are probably more suitable for cooler gardens[1]. Plants mature in 12 - 16 weeks from seed in warm climates but the growing season in Britain is usually too short for the beans to mature fully and crop yields are seldom worthwhile[1].

This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[1].

Range: S. America.

Edibility: Immature seed - cooked and used like peas in soups, stews etc[2].

The mature seed is dried and stored for future use. It must be thoroughly cooked before being eaten[1]. It is best soaked for about 12 hours prior to cooking and is eaten in soups, stews or fermented and made into tempeh[2]. The sprouted seeds are cooked and used in Chinese dishes[2]. The dried seed can be ground into a powder then used as a thickener in soups or can be mixed with cereal flours when making bread.

Young seedpods - steamed and used as a side dish with rice, or added to soups, stews etc[2].

Leaves - cooked. They often have a bitter taste[2].

Medicinal: The seeds are astringent[3]. They are used in the diet of people with fevers[3].

Pollinators: Insects

Soil: Can grow in light, medium, and heavy soils.

Flower Type: Hermaphrodite

Known Hazards: The raw mature seed is poisonous. The toxic principle is hydrocyanic acid and this is destroyed by thoroughly cooking the seed[1].

Links

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Facciola, Stephen. Cornucopia - A Source Book of Edible Plants. Kampong Publications, 1990.
  3. 3.0 3.1 Chopra, R. Glossary of Indian Medicinal Plants. Council of Scientific and Industrial Research, New Delhi, 1986.