Madagascar periwinkle (Catharanthus Roseus Apocynaceae) Plant Care – How to Take Care & Grow

This plant is related to the blue-flowered periwinkle, but  The oval leaves are bright green and shiny, and  Shiny, healthy-looking oval leaves have a light-colored midrib.

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Catharanthus roseus aroused much interest some years ago when its wild form was found to produce a drug useful in the treatment of leukemia. It is not demanding and is available at garden centers in spring. It is fairly easy to raise from seed and can be a good outdoor annual. A well-grown plant can quickly fill the a5-in/13-cm pot. Repot as necessary to keep the plant growing strongly.

Blooming

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Star-shaped flowers, with slightly reflexing petals, are about lin/2.5cm across and are often carried in large numbers. Produces white, pale violet, or pink star-shaped flowers with a deeper- colored throat. Flowers are produced in profusion at the tips of the stems. Seedlings produce the healthiest, most free-flowering plants. This periwinkle forms a rounded, shrubby plant with a flowering season that lasts for the whole of the summer into fall.

Madagascar periwinkle Fact File

ORIGIN: Madagascar.
HEIGHT: About 10in/25cm.
POTTING MIX: Soil or soil-based medium.
PROPAGATION: Sow seed in a warm sheltered spot in late winter or early spring, or in a warm greenhouse in winter. Soft-tip cuttings can be taken in spring and early summer.
REPOTTING: Move vigorous plants into pots one size larger as necessary.
KEEPING PLANTS: Not easy to bring into flower again, so plants are often discarded after flowering.

Madagascar periwinkle Plant Care

  • Bright light with some direct sun will encourage good flowering.
  • Moderate warmth with a minimum temperature of about 60°F/16°C.
  • Keep the soil moist throughout the flowering period and mist the leaves occasionally.
  • Apply a standard liquid fertilizer every 10 to 14 days.

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