Crassula atropurpurea aka Purple Crassula

Crassula atropurpurea can be propagated easily through stem cuttings, leaf cuttings, or seeds. For cuttings, take stem or leaf sections and allow them to callous for a few days before placing in coarse river sand or succulent mix. The best time for cuttings is during the growing seasons (April-May or September-October in the southern hemisphere, or spring-fall in the northern hemisphere). Seeds are very fine, almost dust-like, and should be scattered on prepared medium with coarse-sieved river sand on top. Seedlings grow quickly and can be planted out within six months.

Crassula atropurpurea grows up to 60 cm (2 feet) tall as a much-branched succulent shrublet with erect to decumbent stems. The flowering stalks can extend up to 40 cm above the foliage. This is an extremely variable species, so mature size can differ between varieties, with var. anomala being more compact at around 15 cm (6 inches) tall.

Crassula atropurpurea tolerates extreme temperature variations in its native Karoo habitat, surviving above 40°C (104°F) in summer and as low as -3°C (27°F) in winter. In cultivation, it is hardy in USDA zones 10a-11b, tolerating temperatures down to 30°F (-1.1°C) for short periods. For best flower formation, provide a cool winter rest period at 10-15°C (50-59°F). Avoid prolonged exposure to frost or extreme cold, which will cause leaf drop.

Yes, Crassula atropurpurea produces small, tubular, creamy yellow to white flowers arranged in globular clusters on extended flowering spikes. The pubescent flower stalks can grow up to 40 cm long, elevating the blooms above the foliage. Flowering typically occurs in early spring through summer. The flowers are pollinated mainly by bees. For best flowering, provide a cooler winter rest period at 10-15°C (50-59°F).

POWO/Kew Gardens recognizes five varieties: var. atropurpurea (the most widespread type variety with smooth or papillate but never hairy leaves), var. anomala (compact form up to 15 cm with densely hairy parts and red-purple leaf tips), var. cultriformis (from Namibia to Cape Province, desert/dry shrubland biome), var. muirii (from Cape Province), and var. watermeyeri (Velvety Stonecrop, with larger leaves and erect hairs on all parts). The varieties differ mainly in leaf size, hairiness, and geographic distribution.

Crassula atropurpurea can grow outdoors year-round in USDA hardiness zones 10a-11b (minimum 30°F/-1.1°C). In its native South African and Namibian habitat, it grows on stony slopes, gravelly flats, and rocky crevices beneath karroid bushes. Plant in full sun to partial shade with excellent drainage. In colder climates, grow outdoors in containers during warm months and bring inside before frost. The plant tolerates brief cold snaps but prolonged freezing will cause leaf drop and potential death.

During the active growing season (spring and fall), water when soil is completely dry and provide bright light to encourage the purple coloration. In summer, protect from intense afternoon sun which can burn leaves, and maintain regular watering. In winter, reduce watering significantly and provide a cool rest period at 10-15°C (50-59°F) to encourage spring flowering. The plant may lose some leaves in response to extreme temperatures. Propagate cuttings at the start of active growth periods.

Crassulas are susceptible to mealybugs and fungal diseases. Mealybugs appear as white cottony masses on leaves and stems and can be treated with rubbing alcohol or insecticidal soap. Fungal problems typically result from overwatering and poor drainage, causing root rot. The plant may become 'squishy or translucent' when overwatered. Always let soil dry completely between waterings, ensure pots have drainage holes, and never let the plant sit in water. Good air circulation helps prevent fungal issues.

Repot Crassula atropurpurea as needed, preferably in spring at the beginning of active growth. Ensure the soil is completely dry before repotting. Use a pot with drainage holes and well-draining succulent/cactus mix with 50-70% mineral grit (coarse sand, pumice, or perlite). These plants are ideally suited to container cultivation and don't require frequent repotting since they have relatively small root systems. Repot when roots fill the container or the plant becomes top-heavy.

Crassula atropurpurea is an easy succulent to grow, rated as 'average' skill level by SANBI. It is drought-tolerant, forgiving of neglect, and ideally suited to container cultivation as a houseplant. The main requirement is avoiding overwatering, which is the most common cause of problems. Use well-draining soil, water only when soil is completely dry, and provide bright light. This makes it a great choice for beginners and those who tend to forget to water their plants.

Crassula atropurpurea is pollinated mainly by bees. The small tubular flowers produce nectar that attracts these pollinators. In cultivation, you can hand-pollinate by transferring pollen between flowers using a small brush if you want to collect seeds. The resulting seeds are very fine, almost dust-like, and can be used for propagation.

Purple Crassula’s native range is South Africa.

Purple Crassula does best in dry soil and should only be watered sparingly.

To keep your Purple Crassula healthy, it's important to use a potting soil that won't retain too much moisture. A soil that drains well and contains perlite or vermiculite for drainage and some organic matter for nutrition is ideal. Adding a few handfuls of perlite to regular cactus soil from the store is an easy way to create this type of soil mix.

Purple Crassula requires abundant, bright, and direct light to thrive. The best placement for this plant is within one foot of a window to ensure it receives enough light. If you live in an area with more extreme weather, such as hot summers or cold winters, you may need to adjust the placement of the plant accordingly. During hot summer months, it is important to place the plant away from full sun, as this can cause the leaves to yellow or burn. During cold winter months, it is best to move the plant closer to the window to take advantage of the extra light that can help it survive. By keeping an eye on the current weather in your area, you can make sure your Persplakkie is always in the right place to thrive.

Purple Crassula enjoys dry environments, but misting the plant or providing extra humidity can create an environment for harmful fungi to thrive on the leaves.

The Purple Crassula is characterized by its slow growth and doesn't need fertilization in addition to its potting soil. By renewing the soil in its pot once a year, it should have enough nutrition. Remember, plants get their energy from sunlight, not from any fertilizers.

There is no verified data on the toxicity of this plant in the records of Ploi. If any person, including yourself, a family member, or a pet, consume plant material with an uncertain toxicity level, it is advisable to seek the advice of a healthcare expert.