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Vinca, Madagascar Periwinkle
Scientific Name: Catharanthus roseus (L.) G. Don
Synonym: Vinca rosea
Family: Asclepiadaceae
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)

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).

Cultural Practices:
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

Blooming Habits:
They need warmth, and limited water and fertilizer to bloom abundantly, instead of just growing.

Fruiting Habits:

Start inside at 70-85F (21-29C). 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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Desert-Tropicals is dedicated to provide gardening advice, gardening ideas, and information about flower of all kind for landscape and collections. We try to check carefully the identification of the plants on the illustrations as well as the other information from the page, but occasionally errors do occur. if you notice anything that needs to be changed please contact us. Thanks.

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