Conophytum minutum
| Light | Bright, filtered light; some direct sun outside the peak of summer |
|---|---|
| Water | Only during the autumn–winter growing season; keep completely dry through summer dormancy |
| Soil | Gritty, very free-draining mineral mix (see Soil and potting mix) |
| Temperature | Cool, frost-free winters; protect from hard frost. Roughly USDA zones 9b–11 |
| Propagation | Division of clumps; seed |
| Toxicity | Generally regarded as non-toxic to cats and dogs |
Conophytum minutum is a small, clumping "cono" — a member of the dwarf, pebble-like mesembs — with smooth, rounded green bodies that multiply over the years into dense, low mats. In autumn each little body opens a single magenta to pink flower, and a well-grown clump in bloom can be smothered in colour. It is one of the more variable, widespread and widely grown members of the genus Conophytum.
Description
Each plant body of Conophytum minutum is a tiny, smooth, more or less spherical to slightly flattened unit, usually a centimetre or so across, in soft grey-green to fresh green. The bodies are fused pairs of leaves with only a small slit or "mouth" at the top, from which the flower and the next season's growth emerge. Unlike some conos there are no obvious windows or heavy markings — the appeal here is the clean, pebble-smooth form.
Over time a single head divides and re-divides, building up into a tight cushion or mat of many bodies. Flowers appear in autumn: solitary and magenta-pink, and are day-opening. As with all conos, each year the old body dries to a papery sheath around the fresh new body growing inside it.
Distribution and habitat
Conophytum minutum is native to South Africa, ranging across the Western and Northern Cape, where it grows on rocky outcrops and in shallow pockets of gritty soil. Plants there endure hot, dry summers by shrivelling down into their papery sheaths and doing their growing and flowering in the cooler part of the year. This wild rhythm is the key to keeping the species happy in cultivation.
Cultivation
The single most important thing with C. minutum is to respect its winter-growing cycle. It is grown much like the rest of the genus: pot it in a gritty, sharply draining mineral mix, give it bright light, and water only during the active season from late summer through autumn and into winter, letting the mix dry between drinks.
Through the heat of summer the plant goes dormant and should be kept completely dry — the bodies will shrivel into their sheaths, which is normal and not a sign of trouble. Resume watering in late summer or early autumn when new growth and buds appear. Keep it frost-free and airy; the main causes of loss are watering during dormancy and a mix that holds too much moisture. See Repotting for handling clumps.
Propagation
The easiest route is division: lift an established clump at the start of the growing season and gently pull it into smaller groups of bodies, each with a bit of root, then pot them up and water lightly once they settle. C. minutum can also be raised from seed sown on a fine mineral surface in autumn, kept humid and cool, though seedlings are slow and take a few years to reach flowering size.
Common problems
- Rot — usually from watering during summer dormancy or from a mix that stays wet; bodies go soft and translucent.
- Failure to shed — old sheaths that stay damp can trap moisture around the new body; keeping the plant dry and airy in summer lets them dry to paper naturally.
- Etiolation — too little light makes the bodies stretch and lose their neat, rounded form.
- Pests — mealybugs (including root mealybugs) and the occasional sap-sucker; see Pests and diseases.
See also
- Conophytum — the genus overview
- Soil and potting mix · Watering · Propagation - offsets · Propagation - seed · Repotting · Pests and diseases