Fockea capensis Endl.
Brachystelma crispum, Cynanchum crispum, Fockea crispa, Fockea edulis var. capensis
Native to South Africa (Western Cape).
Fockea capensis, also known as Fockea crispa, is a caudiciform succulent with erect or climbing stems that grow from a large gray warty tuber. The caudex is usually hidden underground and grows up to 2 feet (60 cm) in diameter. Stems grow up to 3.3 feet (1 m) long and climb up on any available support. The upper stems are thin, grey, or brown and hairy, while the lower ones are short and thick, much-branched, gray and hairless. Leaves are grey-green, oval, up to 0.8 inches (2 cm) long, and up to 0.4 inches (1 cm) wide. They are slightly folded lengthwise and often with wavy margins. Flowers usually appear in summer. They are star-shaped, up to 0.6 inches (1.5 cm) across, with five long, twisted, yellow-green outer lobes and tiny white inner ones. This species is dioecious, have male and female flowers on separate specimens.
The specific epithet "capensis" refers to the Western Cape province of South Africa, native habitat for the species.
How to Grow and Care for Fockea capensis
Light: These plants prefer partial shade. They can tolerate full sun but need a little sun protection during the hottest part of the day.
Soil: Fast-draining soil mix is the best soil for your Fockea to drain excess water.
Hardiness: Fockea capensis can withstand temperatures as low as 25 to 50 °F (-3.9 to 10 °C), USDA hardiness zones 9b to 11b.
Watering: During the growing season, from spring to fall, water regularly allowing the soil to dry between waterings. Reduce watering in the winter. Water only enough to prevent the shriveling of the tuber.
Fertilizing: To force tuber growth, feed with high-nitrogen fertilizer with a lower potassium level, only during the growing season.
Propagation: Fockea plants are relatively easy to grow from seeds. They are dioecious, so both male and female plants are needed to produce seeds. Vegetative propagation is difficult to impossible.
Learn more at How to Grow and Care for Fockea.
Toxicity of Fockea capensis
Fockeas are known as food plants, but the tuber has milky sap, which is said to be poisonous. Avoid contact with skin or eyes and keep away from children and pets.
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