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Plant guide

Cassava.

Manihot esculenta

Pronounced MAN-ih-hot es-kyoo-LEN-tuh

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Cassava
Photo by Raja Sekhar Chimirala (CC BY) via iNaturalist

Cassava is a woody shrub grown primarily for its edible, starchy tuberous roots. It is a staple food source in many tropical regions around the world. You will find it thrives best in warm climates with plenty of sun.

Another photo of Cassava
Photo by Vreni Gem O. Caasi (CC BY) via iNaturalist

At a glance

Care level
Moderate
Plant type
Perennial shrub
Light
Full sun
Indoor light
Direct sun
Water
Every 3 to 7 days
Mature size
6 to 10 feet
Growth rate
Fast
Hardiness
USDA 10 to 12
Bloom time
Late summer to autumn

Care

Keep the soil consistently moist but never waterlogged to encourage healthy root development. Watch for yellowing leaves which often signal poor drainage or nutrient deficiency. Provide as much warmth and sunlight as you possibly can.

Watering
Water deeply whenever the top inch of soil feels dry to the touch.
Feeding
Apply a balanced fertilizer during the active growing season to support root growth.
Pruning
Trim back dead or damaged branches to keep the shrub tidy and encourage vigor.
Repotting
Move to a larger container once the roots begin to crowd the current pot.
Soil
Well draining sandy loam
Soil pH
5.5 to 6.5
Temperature
15 to 35°C
Humidity
50 to 80%
Drought tolerance
High
Lifespan
Perennial, typically grown as an annual crop
Deer and rabbits
Moderate

Signs it needs repotting

  • Roots growing out of drainage holes
  • Stunted growth despite regular feeding

Safety

People
All parts of the plant contain compounds that release cyanide if ingested raw.
Pets
This plant contains cyanogenic glycosides and is toxic to cats and dogs if ingested.
Children
Keep children away from the raw roots and leaves as ingestion poses a serious poisoning risk.
Contact allergens
Handling the raw plant may cause skin irritation in sensitive individuals.
Airborne allergens
Pollen may trigger mild allergic reactions in sensitive individuals.
Edibility
Raw cassava contains cyanogenic glycosides and must be processed correctly to remove toxins before consumption.

How to identify it

  • Palmately lobed green leaves
  • Sturdy woody stems
  • Large edible tuberous roots
  • Small inconspicuous flowers
Height
1.5 to 3m
Spread
0.6 to 1.2m
Leaves
green, deciduous
Flowers
white, yellow, 1 to 2cm
Fruit
brown, Autumn to winter

Problems to watch for

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    Growing it

    Propagation
    cuttings
    When to plant
    Spring
    Overwintering
    In frost prone areas, harvest the roots before the first frost and use them promptly, and save mature stem cuttings in a cool, dry, frost free place for replanting in spring. If kept in a pot, bring it indoors to a bright, warm location.
    In containers
    It can be grown in large containers of at least 20 liters, though yields will be lower than in the ground.

    Stem cuttings

    1. 1. Select a healthy, mature stem from a plant at least 8 months old.
    2. 2. Cut the stem into 20 cm segments with at least 5 nodes.
    3. 3. Plant the cuttings horizontally or vertically in moist, well drained soil.

    Intercropping with legumes can help maintain soil fertility over multiple growing seasons.

    Grows well with

    • Maize · They are often intercropped to maximize land use efficiency.
    • Beans · Beans help fix nitrogen in the soil which benefits the cassava.

    Similar species

    • Sweet Potato · Both are important tropical root crops grown for their starchy tubers.

    Science

    Family
    Euphorbiaceae
    Genus
    Manihot
    Order
    Malpighiales
    Class
    Magnoliopsida
    Native range
    Tropical South America
    Conservation
    Not of conservation concern as it is widely cultivated globally.

    It thrives in full sun and well drained soils, often colonizing disturbed areas in tropical climates.

    Value to wildlife
    nectar source
    Pollinators
    bees, butterflies
    Uses
    food crop, starch production, ornamental foliage

    Through the year

    JFMAMJJASOND
    Flowering
    Fruiting
    Foliage

    Ecological indicators

    Salinity
    2/9
    Soil reaction
    6/9
    Light
    8/9
    Temperature
    9/9
    Moisture
    5/9
    Nutrients
    4/9

    Taxonomy resolved against GBIF.

    Questions people ask

    Can I grow cassava in a pot?
    Yes, but you need a very large container to accommodate the tuberous roots.
    How do I know when to harvest?
    Harvest when the leaves begin to yellow and drop, usually 8 to 12 months after planting.

    Where the name comes from

    The name Manihot comes from the Tupi word for the plant, while esculenta refers to its edible nature.

    Good to know

    • Cassava is the third largest source of food carbohydrates in the tropics.
    • The roots can be stored in the ground for several months after maturity.
    • It is highly tolerant of poor soils and drought conditions.

    Also in

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    This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.