Rebutia grandiflora var. yellow (Yellow Rebutia)

Botanical Name: Rebutia grandiflora var. yellow
Common Name: Yellow Rebutia, Yellow-Flowered Rebutia

Rebutia grandiflora var. yellow is a compact, clumping cactus prized for its large, bright yellow flowers that contrast beautifully against its small, rounded green stems. Native to Bolivia through its parent species, this miniature cactus offsets readily, forming dense clusters over time. Its manageable size and showy blooms make it an excellent choice for containers, windowsills, and cactus collections. Mature plants typically remain under 6 inches tall, spreading wider as they clump.

Care and Cultivation:

• Prefers bright light to full sun

• Water sparingly; allow soil to dry completely between waterings

• Use a fast-draining cactus soil mix

• Well suited for small containers and indoor growing

Frost Tolerance and Cold Hardiness:

• Best suited for USDA Zones 9–11

• Can tolerate brief cold down to about 25°F (-4°C) when dry

• Protect from frost and prolonged cold

• Ideal growing temperatures: 60–85°F (16–29°C)

Winter Dormancy and Health:

• Growth slows during winter

• Reduce watering significantly in colder months

• Cooler, drier winters help promote flowering

• Maintain bright light year-round

Notes:

• Produces large, vivid yellow blooms

• Offsets readily to form clumps

• Compact, miniature growth habit

• Beginner-friendly and floriferous