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Sickle-leaf Red Crassula
Crassula perfoliata var minor
SA tree number
English: Sickle-leaf Red Crassula, Eastern Cape Red Crassula, Propeller Plant, Scarlet Paintbrush, Red Treasure, Eastern Cape Red Treasure
Afrikaans: Sekelblaarplakkie, Heuningbossie
Historical scientific names: Larochea falcata var. minor, Rochea falcata var. minor, Crassula falcata, Crassula retroflexa, Crassula falx
Crassula perfoliata var. minor is an attractive indigenous succulent perennial, often considered a compact form of the well-known Propeller Plant. It is prized for its unique, greyish-green, sickle-shaped leaves arranged in overlapping pairs, and its vibrant clusters of red to pink flowers that appear in summer. This variety offers striking architectural interest and colour in dry gardens.
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Distinguishing features:
Leaves are distinctly sickle-shaped (falcate), thick, firm, and greyish-green, often with red markings.
Leaves are arranged in opposite, overlapping rows along the stem, resembling a propeller.
Grows as an erect, sparingly branched perennial, relatively smaller than other C. perfoliata varieties.
Flowers are bright red, pink, or rarely white, densely clustered in a rounded to flat-topped inflorescence.
Summer-flowering, which is unique among many Crassula species.
Overall appearance:
The Sickle-leaf Red Crassula (Crassula perfoliata var. minor) is a distinctive upright succulent, forming a striking visual with its unique foliage. Its greyish-green, curved leaves are arranged in an overlapping, "propeller-like" fashion along the stems. In summer, it truly shines, producing brilliant, dense clusters of red or pink flowers held proudly above the foliage, resembling a painter's brush.
Height:
Typically grows 20 to 50 centimetres tall (including flower stalks).
Width:
Usually forms a single stem or a few branches, spreading 10 to 30 centimetres wide.
Leaves:
The leaves are opposite, thick, fleshy, and distinctly oblong-sickle-shaped (falcate), measuring up to 9 cm long and 2.8 cm wide. They are arranged in overlapping pairs, laterally compressed, ascending-spreading, and have blunt ends. The colour is greyish-green, often mottled, sometimes with reddish markings. The surface is covered with dwarf, rounded papillae, and the margins have very small teeth.
Flowers:
The flowers are tubular, about 7 mm long, and bright red or pink, rarely almost white. They are densely arranged in a rounded to flat-topped inflorescence (thyrse) borne on an elongated peduncle up to 10 cm high. The flowers are attractive and make a showy display. Crassula perfoliata var. minor flowers are hermaphroditic.
Flowering season:
Primarily flowers during summer (November to February in South Africa), making it a valuable addition to the garden during this period.
Fruits:
Small, dry capsules containing tiny seeds.
Seeds:
Very small and fine, dispersed by wind.
Stems:
Erect, sparingly branched perennial succulent stems, becoming somewhat woody at the base on older plants.
Thorns:
None.
Roots:
Fibrous root system.
Soil type:
Requires very well-drained, gritty, or sandy soil. It thrives in lean, rocky conditions.
Aspect:
Thrives in full sun. It can tolerate morning or afternoon sun, but full sun encourages the best growth and flowering. It is drought-tolerant once established. It is half-hardy to tender to frost; it can endure mild frosts but needs protection from severe or prolonged freezing temperatures.
Ediblity:
Not considered edible for humans.
Toxicity:
Like many Crassula species, Crassula perfoliata var. minor contains cardiac glycosides and is generally considered toxic if ingested. While some sources might mistakenly claim it is non-toxic to pets, it's safer to assume it can cause gastrointestinal distress (vomiting, diarrhoea) and other symptoms if consumed by humans or animals. It's advisable to keep it out of reach of children and pets.
Uses:
Highly valued as an ornamental plant for its unique foliage and striking summer flowers.
Excellent for rockeries, succulent gardens, xeriscaping, and as a focal point in containers.
Ideal for dry thicket gardens in frost-free or mild-frost regions.
Can be grown indoors in a bright, sunny window in colder climates.
Ecology:
The bright red and pink flowers are pollinated by butterflies. Growing on rocky outcrops and cliffs, the plant is adapted to full sun and dry conditions, with its succulent leaves storing water.
Distribution and habitat:
Crassula perfoliata var. minor has a relatively limited distribution in South Africa. It is confined to quartzitic sandstone outcrops (rarely shale) from the Groot Winterhoek Mountains and Port Elizabeth (Gqeberha) in the south to Umtata (Mthatha) in the northeast of the Eastern Cape. It grows solitary or in small clusters on north-, east-, and west-facing cliffs along dry river valleys, at altitudes of 250-1000 m in Fynbos or Albany Thicket Biome.
Derivation of name:
The genus name Crassula comes from the Latin 'crassus' (thick).
The species epithet perfoliata refers to the leaves appearing to be "perforated" by the stem, though this is less prominent in this variety than in some other forms of the species.
The varietal name minor is Latin for 'smaller', indicating its generally more compact size compared to other varieties of Crassula perfoliata.
'Falcata' (often used as a synonym) is Latin for 'sickle-shaped', referring to the characteristic leaf shape.
Historical aspects:
This variety has been known to horticulture for a long time, often cultivated under the name Crassula falcata. Its unique leaves and vibrant summer flowers have made it a popular succulent for collectors and gardeners worldwide.
Interesting facts:
Its common name "Propeller Plant" comes from the way its leaves stack up in a spiral, looking just like a propeller blade!
Unlike many succulents that bloom in winter, this one puts on a spectacular show of red flowers in summer, which is a real treat.
Its silvery-grey, sickle-shaped leaves are very distinctive, even when it's not flowering.
Despite its captivating beauty, it's best to admire it from a distance, as it contains compounds that can be toxic if ingested.
Growing tips:
Propagation: Easily propagated from stem cuttings, leaf cuttings (though slower), or seed. Allow cuttings to callus for a few days before planting.
Light: Requires full sun for best growth and flowering.
Watering: Water thoroughly when the soil is completely dry. Reduce watering in winter, especially if growing in a cold climate, to prevent root rot. Drought-tolerant.
Soil: Needs extremely well-drained, gritty soil. A standard cactus/succulent mix amended with extra perlite or pumice works well.
Container: Excellent for containers or rock gardens.
Maintenance: Low maintenance. Protect from severe frost.
This plant is a fantastic alternative for:
Common name
Scientific Name
Plant type:
Plant type
Plant family:
Crassulaceae (little thick (the leaves)) - Order: Saxifragales