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Ceratotheca triloba (African foxglove)

Other names: South African foxglove, Sesamum trilobum

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Species
C. triloba is a tender, erect, finely hairy, annual or biennial, with triangular to heart-shaped, variably lobed, dark green leaves and open racemes of tubular, pale lilac-pink flowers in summer.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
1.4 m 0.6 m 1 year
4 ft 1 ft 1 year

Where to grow

Soil type
  • Chalky
  • Loamy
  • Sandy
Soil drainage
  • Well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Partial Shade
  • Full Sun
Aspect
  • West
  • South
Exposure
  • Sheltered

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Additional plant details

Cultivation

Grow in a sunny, sheltered position in fertile, well-drained soil. Heat and drought tolerant once established.

Suggested uses

Containers/Patio, Architectural, Flower Arranging, Beds and borders, Cottage/Informal

UK hardiness

H3

USDA zones

Zone 9, Zone 10

Sunset zone

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Evergreen

Habit

Erect

Native to

Southern Africa

Drought tolerant

No

Flood tolerant

No

Toxicity

Not toxic

Plant care

Pruning

Remove at the end of the growing season or overwinter indoors.

Propagation methods

Seed

Propagation

Sow seed in situ. Tends to self-seed freely in ideal growing conditions.

Pests

Generally pest-free.

Diseases

Generally disease-free.

Deadhead regularly (optional)

Let self-seed if desired

Remove annuals at end of flowering season (optional)

Apply a fertiliser container grown plants regularly

Sow seed in situ

Plant tender plants after danger of frost has passed (late spring, early summer)

Other plants

Plants in this Genus (1)

Ceratotheca

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Ceratotheca triloba
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Ceratotheca triloba African foxglove
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Companion plants (1)

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Anthemis tinctoria 'E.C. Buxton'
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Anthemis tinctoria 'E.C. Buxton' Dyer's chamomile 'E.C. Buxton'
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