Rebutia cv. sunrise is a popular variety obtained by hybridization, specifically between Rebutia heliosa and Rebutia pulvinosa ssp. albiflora (syn: Aylostera albiflora). This cross resulted in a plant more vigorous than their parents, with stem tightly covered by appressed spines reminding of R. heliosa and lovely fresh pinky white flowers in masse that clearly are a feature inherited from R. pulvinosa ssp. albiflora. This is a really nice cultivar which is just stunning each year, a must for any collection.

Growth Rate
It is a relatively rapidly growing and easily flowering species that will make large clumps given the best conditions.

Flowering
Funnel shaped ca. 3 cm in diameter often larger than the stems. Petals pink outside, pale yellow-orange inside

Water and Feeding/Fertilizer
Needs moderate to copious waterings in summer, but do not overwater (Rot prone), keep dry in winter at a minimum temperature of 0°C. Feed with a high potassium fertilizer in summer.

Soil
It likes very porous standard cactus mix soil. Prefer a neutral or low pH compost, avoid substrata rich in limestone.

Hardiness
Reputedly resistant to frost if kept on the dry side prior to, and during, cold weather (hardy to -4 C ° C, or less for short periods).

Light
The plant tolerates bright situations but enjoys filtered sunlight or afternoon shade, inside it needs bright light, and some direct sun.

Propagation
Rebutia cv. sunrise is a summer grower plant that is easy to cultivate.

Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz

Blooming Season	Summer
Common Name	Rebutia heliosa cv
Dormancy	Winter
Family	Cactaceae
Flower	Pinkish
Frost Tolerance	12 f
Growth Rate	Slow growth
Hardiness Zone	19b to 11b
Height	(P6. 5 cm h15 cm)
Origin	Garden origin.
Pot Size	3.5"
Scientific Name	Sulcorebutia sunrise
Shape	Funnel-shaped
Sun Exposure	Full sun and partial