Desert Rose Care: Sun, Water and Summer Blooms

Desert rose (Adenium obesum) needs six or more hours of bright sun to flower, soil that dries between waterings, and a warm winter home. UF/IFAS says it can be planted outdoors year-round only in zones 10B to 12; elsewhere it is a patio plant that comes inside. NC State describes a succulent perennial with a swollen caudex that bears bell- or funnel-shaped flowers in summer.

USDA zones

10–12

Sun

Full sun

Water

Let soil dry between waterings

Lifecycle

Perennial

Origin

Africa

Container friendly

Yes

USDA zones (outdoors)

10B–12 (UF/IFAS)

Light

6+ hours bright sun for flowers

Cold

Not freeze tolerant; in by 55°F (NC State)

Bloom time

Summer; pink, rose, red or white

Pets

Toxic to dogs, cats, horses (ASPCA)

Sun and flowering

UF/IFAS says plants must have six or more hours of bright light each day to maintain profuse flowering, and that Adenium will not flower under low light conditions. If your plant is leafy but flowerless, light is the first thing to check.

Soil and pots

NC State says to use a potting soil for cacti and succulents in a pot with drainage holes. UF/IFAS suggests a rich, organic peat- or bark-based bagged potting soil for indoor plants. NC State stresses drainage holes, and UF/IFAS stresses a rich mix.

Water and feeding

Watering advice differs a little between sources.

Feeding differs as well. NC State says to feed in spring to encourage blooming, while UF/IFAS suggests a low dose of liquid fertilizer, following the label, weekly during the summer growing season. Whichever you choose, the sources agree on rot as the risk, so water to the soil, not the calendar.

Winter and cold

Desert rose is a tender plant. UF/IFAS says it is not freeze tolerant (it fails below 32°F), though it is chill tolerant to about 35°F and leaves may yellow and drop at that temperature. NC State says to bring plants indoors when outside temperatures reach 55°F. UF/IFAS says a container plant is a dramatic specimen for a deck or patio but should be moved indoors in winter.

Varieties

UF/IFAS says Adenium obesum and its many hybrids are often seen in retail garden centers, and NC State says double-flowered cultivars are available. Check the tag for flower color and for the plant’s mature size.

Common desert rose problems

Desert rose needs little pruning. Our desert rose pruning guide covers spring grooming, grafted plants and the toxic sap.

Pets

The ASPCA lists desert rose as toxic to dogs, cats and horses, and names cardiac glycosides as the toxic principle. Its clinical signs are vomiting, diarrhea, anorexia, depression, irregular heart beat and death. Keep the plant out of reach of animals.

Pair it with other desert plants

Desert rose follows the same pot-out-in-summer routine as aloe vera, and our succulent care guide covers the general soil and pot rules. See the whole group in the desert plants collection.