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Lima beans

Phaseolus lunatus

Identified By Marcs

Lima beans, scientifically known as Phaseolus lunatus, are a popular warm-season legume grown extensively for their edible seeds or pods. Belonging to the Fabaceae family, these plants can grow as either bush varieties or climbing vines depending on the specific cultivar. They require warm temperatures, full sun, and moderately fertile, well-draining soil to thrive. Lima beans are celebrated for their rich, buttery texture and high nutritional value, providing an excellent source of dietary fiber, plant-based protein, complex carbohydrates, and essential micronutrients like iron and potassium. Proper cultivation involves careful watering to keep the soil consistently moist without waterlogging, alongside protection from common pests and fungal diseases.

Also known as: butter bean sieva bean phaseolunatus

Toxicity & Safety

Is Lima beans toxic to pets?

Yes, toxic to pets.

Raw lima beans contain cyanogenic glucosides, specifically phaseolunatin, which can release toxic hydrogen cyanide when ingested by pets such as dogs and cats. Consuming raw or undercooked beans can lead to severe gastrointestinal distress, vomiting, weakness, breathing difficulties, and in severe cases, fatal poisoning. It is crucial to keep raw beans and the plant itself completely out of reach of household pets. Always ensure that any beans consumed by humans are thoroughly cooked to destroy these harmful compounds, and never offer raw garden parts to animals.

Is Lima beans toxic to humans?

Yes, toxic to humans.

Raw or improperly cooked lima beans contain harmful cyanogenic glucosides that can break down into hydrogen cyanide during digestion. Ingestion of raw beans can cause acute poisoning symptoms, including dizziness, headache, confusion, nausea, and vomiting. Fortunately, thorough boiling or cooking effectively destroys these toxic compounds, making the cooked beans completely safe and highly nutritious for human consumption. Gardeners and culinary enthusiasts must remember never to eat raw pods, leaves, or uncooked seeds directly from the plant.

Is Lima beans safe during pregnancy?

Generally considered safe during pregnancy.

Growth & Dimensions

Height 30 - 300 cm
Width 30 - 90 cm
Growth Rate Moderate
Care Level Easy
Lifespan Annual

Ideal Environment

Temperature 18°C - 30°C
Sunlight Hours 6 - 8 hrs/day
Sun Exposure Full sun
Soil pH 6 - 7
Watering Interval 4 - 7 days
Humidity 40.00% - 80.00%
USDA Zone 9 - 11

Warm Temperate and Subtropical Climates

Climate: Thrives in warm, frost-free climates with plenty of direct sunlight and moderate, consistent seasonal rainfall.

Soils: Loam Sandy loam Clay loam
Annual Rainfall: 500 - 1200 mm

Native Regions

Central America
South America

How to Care for Lima beans

How should I handle watering lima beans?

Water your lima bean plants consistently, providing about 2.5 centimeters of water per week through rainfall or direct irrigation. Ensure the soil remains evenly moist, especially during the critical flowering and pod-development stages, but avoid waterlogged conditions which can easily cause root rot and fungal issues.

How to Propagate Lima beans

How to propagate Lima beans by seed?

Sow lima bean seeds directly into warm garden soil after all danger of spring frost has completely passed and soil temperatures reach at least 18 degrees Celsius. Plant the seeds approximately 2.5 to 4 centimeters deep, spacing bush varieties about 10 centimeters apart and pole varieties 15 to 20 centimeters apart. Provide gentle initial watering and keep the soil moist until germination occurs within 7 to 14 days.

Common Diseases & Pests of Lima beans

What is Powdery Mildew and how is it treated?

Fungal
Symptoms:

White or gray powdery fungal spots appear on the surface of leaves, stems, and pods, eventually causing leaves to turn yellow, curl up, and drop prematurely if left untreated.

Treatment:

Apply a certified organic fungicide such as neem oil or sulfur-based sprays at the very first sign of infection, and thoroughly remove heavily affected plant debris from the garden.

Prevention:

Ensure adequate spacing between individual plants to promote good air circulation, water at the base of the plant to keep foliage dry, and choose disease-resistant cultivars whenever possible.

Properties & Benefits of Lima beans

Bears Fruit

Uses & Health Benefits

What are the benefits of nutrient-dense plant protein in Lima beans?

Lima beans are a fantastic source of high-quality plant-based protein and complex dietary fiber, which work together to support sustained energy levels, improve digestive health, and promote stable blood sugar regulation. Regular consumption helps maintain a healthy cardiovascular system by assisting in cholesterol reduction and providing abundant essential minerals like magnesium, potassium, and iron for overall vitality.

Precautions: Must always be thoroughly cooked before consumption to eliminate natural toxins.

Key Nutrients / Compounds

Dietary Fiber rich in 7.0 g / 100g

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