Parodia nivosa
| Light | Bright light with some direct sun; a little shade from the fiercest afternoon rays |
|---|---|
| Water | Moderate in the growing season, allowing the mix to dry between waterings; keep dry and cool in winter |
| Soil | Fast-draining, gritty mineral mix (see Soil and potting mix) |
| Temperature | Keep above freezing; USDA zones 10–11 |
| Propagation | Seed; occasionally offsets |
| Toxicity | Non-toxic to cats and dogs |
Parodia nivosa is a small, globular to shortly columnar cactus from the mountains of northwestern Argentina, prized for its dense covering of snow-white spines and its brilliant orange-red flowers. A true member of the genus Parodia, it is a longtime favourite show and collection plant, combining a neat, symmetrical body with some of the most vivid blooms in the group.
Description
Parodia nivosa forms a solitary green body that begins globular and lengthens into a short cylinder with age, typically reaching around 15 cm tall and roughly 8–10 cm across, sometimes more in old plants. The body is divided into numerous low, spiralling ribs broken into small tubercles, each crowned by a woolly areole.
The spines are the plant's signature feature: fine, soft-looking and chalky white, they clothe the whole body so densely that the green skin can be almost hidden. Slightly stouter central spines sit among the finer radials. From the woolly crown open funnel-shaped flowers of a rich, glowing orange-red, borne in a ring near the top and opening over a succession of sunny days in late spring and summer.
Distribution and habitat
The species is native to the Salta province of northwestern Argentina, where it grows on rocky, well-drained mountain slopes and among grasses at moderate altitude. In habitat it experiences strong sun, a distinct summer rainy season and a cool, dry winter — a rhythm worth keeping in mind when growing it. The dense white spination helps shield the body from intense high-altitude sunlight.
Cultivation
Parodia nivosa is a rewarding, fairly easy grower that repays a little attention with its striking flowers. Plant it in a very free-draining, mostly mineral mix and give it bright light with some direct sun, which keeps the body compact and the spination dense; too little light causes weak, etiolated growth. Water moderately through the warm months, letting the mix dry out between waterings, then keep the plant dry and cool over winter — a proper cool, dry rest is the key to a good flush of spring flowers.
Like most parodias it dislikes sitting in wet soil, so err on the side of underwatering. See Watering and Repotting for general technique.
Propagation
Seed is the usual method, and Parodia seedlings grow steadily given warmth, humidity and a gritty surface to germinate on; see Propagation — seed. The species is mostly solitary but may occasionally produce offsets with age, which can be removed and rooted as for other clustering cacti — see Propagation — offsets.
Common problems
- Rot — the commonest cause of loss, almost always from overwatering or a mix that drains too slowly; the plant softens and discolours from the base.
- Etiolation — too little light makes the body pale, soft and elongated, and thins the prized white spination.
- Pests — red spider mites (fine webbing and bronzed patches) and mealybugs (white fluff tucked into the areoles) are the usual offenders. See Pests and diseases.
See also
- Parodia — the genus overview
- Soil and potting mix · Watering · Repotting · Propagation — seed · Propagation — offsets