Family: Asphodelaceae
Common names: Star Cactus, Window Haworthia, Cushion Aloe
There are many species of succulents or cacti with the name Star cactus, since many of them form rosette shapes with spiky leaves. I am personally not very fond of succulents having killed many of them due to wrong soil or watering.
Research tells me now, that they should be watered only once a month or less, depending on the weather. All this research in Haworthia and Haworthiopsis is now tempting me to have a succulent garden. Do you have one? If yes, please send me pictures on nancy@greencoverinitiative.com!
Plant Characteristics
Haworthia retusa is a compact, low-growing succulent that typically reaches about 5 to 10 centimeters in height and spreads up to 10 to 15 centimeters wide.
It forms a rosette of thick, fleshy leaves that grow close to the ground. The roots are shallow but fibrous, allowing the plant to quickly absorb moisture from light rains.
The leaves are triangular and slightly curved inward, with a distinctive translucent “window” at the tip, typical of the Haworthia family.
These windows allow light to penetrate deeper into the leaf for photosynthesis, which is helpful since the plant often grows partially buried. The leaf surface is smooth, with a soft green to grey-green color, sometimes showing faint lines or patterns.
The plant does not have a visible trunk, as the leaves arise directly from the base. Over time, it may form small clumps by producing offsets around the main rosette. Its compact shape makes it well suited for container growing.
Haworthia retusa produces slender flower stalks that can grow up to 20 to 30 centimeters tall. The flowers are small, tubular, and usually white with light green or brownish veins. While not very showy, they add a delicate charm when in bloom.
Gardening Tips
Haworthia retusa prefers bright, indirect light rather than direct harsh sunlight. Too much direct sun can cause the leaves to turn brown or reddish. It does well near a window indoors or in a shaded outdoor spot.
The plant requires well-draining soil, such as a cactus or succulent mix. Watering should be moderate, allowing the soil to dry out completely between waterings. Overwatering can quickly lead to root rot, which is a common issue with this plant.
Spacing is not a major concern due to its small size, but if planting in groups, allow about 10 to 15 centimeters between plants. It benefits from occasional feeding with a diluted succulent fertilizer during the growing season, usually in spring and early summer.
Pruning is minimal and mainly involves removing dried or damaged leaves. Watch for pests like mealybugs, which can hide between the leaves. Good airflow and proper watering habits help prevent most problems.
Uses of Star cacti
Haworthia retusa is mainly used as an ornamental plant, especially popular in indoor gardening due to its compact size and unique leaf appearance. It is often placed in small pots, terrariums, or decorative containers.
Its attractive rosette shape and translucent leaf tips make it a favorite for succulent collections and windowsill displays. It fits well in modern home decor and small-space gardening.
While not widely known for medicinal uses like some other succulents, it contributes to indoor greenery and can help create a calming environment. Its low maintenance nature makes it suitable for beginners.
These plants, like other cacti and succulents are adapted to survive in dry conditions and can be part of water-efficient gardening practices. Hence, they can be grown in areas with very little water. It also pairs well with other small succulents in mixed arrangements.
Propagation
Propagation is through offsets and occasionally seeds.
The plant naturally produces small offsets around the base, which can be gently separated and replanted once they develop their own roots.
Propagation
Propagation is through stem cuttings.
Small plantlets arise from the base and the stem of parent plants, which can be cut gently using sharp knives. These cuttings should be allowed to dry and form a brown callus, for a few days before planting in well-draining soil or cactus mix.
Photographed at: Thrissur, Kerala
