🍠 Cassava (*Manihot esculenta*)
🔤 Name English / nombre español / Name Deutsch
Cassava / Yuca / Maniok
📄 General description
Manihot esculenta, commonly known as cassava or yuca, is a perennial shrub cultivated for its starchy tuberous roots. It is one of the most important staple crops in tropical regions, including Costa Rica. The plant can grow up to 3 meters tall and has a strong drought tolerance, making it well suited for small-scale and subsistence farming. While the roots are a valuable food source, they must be processed properly to remove naturally occurring cyanogenic compounds.
🌿 Botanical Characteristics:
Family
Euphorbiaceae / (Spurge family)
Growth and Structure
Cassava grows as a semi-woody shrub with upright, often sparsely branched stems. It produces a strong root system with thickened storage roots, which are the main edible part of the plant.
Leaves
The leaves are palmate, with five to nine lobes, and are usually dark green with long petioles. They are arranged spirally and may fall off in the dry season
Flowers
The plant produces small, inconspicuous flowers, typically pale green to yellowish, in panicle-like inflorescences. Male and female flowers occur on the same plant.
Pollination
Pollination is usually carried out by wind or insects, although many cultivated varieties are propagated vegetatively and may flower infrequently.
Sexual System
Monoecious
Sexual System Notes
Manihot esculenta is monoecious, bearing both male and female flowers on the same individual. However, its reproductive cycle is often bypassed through stem cutting propagation.
🌤️ Soil and Climate Preferences
Cassava is tolerant of poor and acidic soils and grows best in well-drained sandy or loamy soils with moderate fertility. It prefers warm climates and full sun and can withstand dry periods once established. In Costa Rica, it is cultivated in both humid lowlands and drier upland regions.
🍠 Fruit and Use:
General Use
The starchy roots are a major source of carbohydrates and are consumed boiled, fried, or ground into flour. In Costa Rica, yuca is commonly used in soups, stews, and fried snacks. The young leaves are sometimes cooked as leafy greens, but require thorough boiling to remove toxins.
Ripening Season in Costa Rica
Cassava can be harvested 8 to 18 months after planting, depending on variety and conditions. It is not strongly seasonal but is typically harvested during dry periods for easier root extraction.
Common Fruit Traits
The plant is not cultivated for its fruits. When fruits are produced, they are small, dry capsules containing seeds and are not consumed.
Climacteric Category
Irrelevant (not consumed successfully by humans)
👉🏿 Climacteric category overview
Climacteric Category Notes
Cassava is not cultivated for fruit, and any fruiting structures are toxic and not edible. The roots are harvested directly from the soil and show no climacteric behavior.
🌱 Propagation and Grafting
Cassava is propagated via stem cuttings. Mature stems are cut into segments and directly planted in soil. Grafting is not practiced. Roots do not regenerate new plants.
✂️ Care & Challenges:
Pruning
Pruning is generally unnecessary. However, for vegetative propagation, tall plants may be topped to produce more usable cuttings. In agroforestry systems, lateral growth may be trimmed for light management.
Diseases and Pests
Cassava is susceptible to bacterial blight, root rot in poorly drained soils, and mite infestations. Damage from rodents or root-boring insects can occur, particularly in drier regions.
Soil and Fertilization
Though tolerant of poor soils, cassava responds well to organic fertilization such as compost or green manure. Over-fertilization with nitrogen can reduce root yield and should be avoided.
🧺 Harvest Notes
Roots should be harvested promptly once mature, as quality declines if left too long in the ground. After harvest, they deteriorate rapidly and should be processed or consumed within 24–72 hours.
📍 Individuals in the field
Will be added soon