Butterfly bush

Butterfly Bush (Crassula rubricaulis)

Other Known Names: Red-stem Crassula, Crassula rubricaulis
Genus: Crassula
Species: rubricaulis

Aesthetic Description

The Butterfly Bush (Crassula rubricaulis) is a striking succulent shrub with vibrant green, fleshy leaves along bold red stems, forming a dense, bushy structure that can reach up to 60 cm in height. Its upright, branching habit makes it ideal for containers, rockeries, or succulent gardens. In summer, clusters of star-shaped flowers bloom in shades of white to pale pink, attracting pollinators and adding delicate charm. Under bright sunlight, the red stems deepen and the leaf tips may blush reddish, enhancing its visual appeal and making it a versatile, low-maintenance plant suitable for both beginners and experienced gardeners.

Scientific Description

Crassula rubricaulis is a perennial succulent native to South Africa, adapted to rocky outcrops and well-drained soils. It has a woody, upright branching habit with ovate, fleshy leaves that store water efficiently, allowing it to tolerate dry conditions. Flowering occurs in summer, producing small star-shaped flowers. The plant thrives in full sun to partial shade and demonstrates seasonal color variation, with red stems intensifying and leaves developing subtle pink margins in strong light or cooler weather.

General Botanical Information

Part of the Crassulaceae family, Butterfly Bush is valued for its upright branching habit, colorful stems, and dense green foliage that provides architectural interest. Its seasonal variation in color, combined with clusters of star-shaped flowers, makes it a popular choice for rockeries, mixed succulent beds, and container arrangements. Highly adaptable and drought-tolerant, it thrives in low-maintenance landscaping, indoor bright-light settings, and succulent collections.

Growing Conditions

• Light: Full sun to partial shade; colors intensify in bright light

• Watering: Allow soil to dry completely between waterings; drought-tolerant

• Soil: Well-draining succulent mix, sandy, or rocky soil

• Feeding: Light fertilization during active growth

• Humidity: Low; prefers dry conditions

• Repotting: Every 2–3 years or when root-bound