Map tree (Euphorbia tetragona)
Other names honey euphorbia, tree euphorbia
At a glance
- Lifecycle
- Perennial (hardy)
- Exposure
- Full sun
- Frost limit
- −17.8 °C
Cultivation
Prefers a light well-drained moderately rich loam in an open position. According to this species is hardy to climatic zone 7 (tolerating temperatures down to about -10°c). This statement must be viewed with some scepticism, the plant is unlikely to be at all frost-tolerant. Hybridizes with other members of this genus. Members of this genus are rarely if ever troubled by browsing deer or rabbits. This genus has been singled out as a potential source of latex (for making rubber) for the temperate zone, although no individual species has been singled out.
Propagation
Seed - sow spring in a shaded position in a greenhouse. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
Edible uses
The flowers are rich in nectar and this is sometimes used in confectionery.
Medicinal uses
One report says that this species also supplies the drug, though it fails to say what the drug is or its medicinal actions.
Habitat
Not known
Native range
S. Africa - Cape Province