Curio kleiniiformis (Suess.) P.V.Heath, syn. Senecio kleiniiformis Suess., is the spear head or flat-leaf spear succulent. Reclassified into Curio along with the other trailing and ground-cover succulent Senecios, but still widely sold under Senecio kleiniiformis.
Native to the Cape region of South Africa, where it grows in seasonally dry shrubland. Part of the Complete Senecio Guide.
Identification
- Upright to sprawling stems, 20–40 cm tall.
- Leaves blue-green, thickened, shaped like narrow arrowheads or small spearpoints with a basal lobe on each side; 3–5 cm long.
- Capitula yellow, in small terminal heads.
- Waxy bloom on young leaves that wears off on older foliage.
The flat three-lobed arrowhead leaf shape is diagnostic. No other common succulent has this silhouette; even other Curio species with lobed leaves (C. articulatus, C. × peregrinus) carry their lobes on cylindrical rather than flat leaves.
Cultivation
Follows the pillar's general Curio regime with a few adjustments:
- Light. Bright light, including several hours of direct sun. The leaf colour deepens under strong light; shaded plants fade to dull mid-green and lose the blue cast.
- Water. Moderate. More forgiving than bead-leaved trailers. The standard 10–14 day summer indoor schedule is appropriate; water every 4–6 weeks in winter rest.
- Substrate. Gritty free-draining mineral mix. Shallow to medium depth.
- Cold. Frost-sensitive; tissue damages below −1 °C.
Overwatering in winter is the most common killer; the stem blackens at soil level and the plant collapses within days.
Propagation
Stem cuttings are reliable. Cut a 10 cm section, strip the lower leaves, callus for 2–3 days, and insert into dry grit. Roots form within two weeks, and new growth appears within a month.
Leaf propagation fails almost entirely; the flat lobed leaves do not initiate roots or shoots after detachment.
Notes and quirks
The arrowhead leaf shape is one of the stranger silhouettes in the succulent world and gives the species strong display value in small-scale arrangements. It pairs particularly well with rosette succulents of contrasting shape.
Occasionally mislabelled as Senecio scaposus or as "compass plant", neither of which is correct. Check the leaf shape before buying: S. scaposus has cylindrical finger-leaves in a rosette, not flat arrowheads.
Mildly toxic to pets and livestock.
See also
- Senecio articulatus — candle plant, another lobed-leaved Senecio.
- Senecio crassissimus — vertical leaf plant.
- Senecio peregrinus — string of dolphins.