Scientific Name: Catharanthus roseus (L.) G. Don
Synonym: Vinca rosea
Family: Asclepiadaceae
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Recommended Temperature Zone: Sunset®: All zones as annual USDA: All zones as annual Frost Tolerance: Semi tender, needs a protected area Heat Tolerance: Resistant if receiving only morning sun Sun Exposure: Light shade in Phoenix Origin: Madagascar, Mauritius Growth Habits: Perennial to 2 feet high (60 cm) Flowers: Pink or red flowers Watering Needs: Regular water Propagation: Seeds, occasionally by cuttings |
As many other plants of the dogbane family, the Vincas are poisonous, although mildly. There are also 2 drugs extracted from it: vinblastine (used in the treatment of Hodgkins' disease) and vincristine (used in the treatment of leukemia).
Blooming Habits:
They need warmth, and limited water and fertilizer to bloom abundantly, instead of just growing.
Culture:
These Vincas can survive winter, but they might look leggy and ragged, growing slowly in the spring. Depending how protected they are, it might be best to just replacing them. Check for snails and slugs
Propagation:
Start inside at 70-85°F (21-29°C). The seeds take one to 3 weeks to germinate, and then grow slowly. Plant after 10 weeks, 12 inches apart (30 cm).
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