Description: Plants usually unbranched,
deep-seated in substrate and inconspicuous.
Stems: Spheric, that become somewhat cylindrical with age,
grey-green, up to 5 cm in diameter × 2-7 cm tall,
Tubercles: Cylindrical, without latex, axils bare;
Roots: Diffuse, not enlarged.
Spines: 50 or more per areole, in several series but all equally
thin, mostly appressed, white, innocuous, bristle-like, 0,5-6 mm,
glabrous, all interpreted as radial, innermost
Flowers: Approx 1 cm
long and in diameter; dirty greenish-white or cream, usually with
sharply defined midstripes of reddish-brown.
Blooming season (In Europe): January to March
Fruits: Scarlet, cylindrical or clavate, 10-25 mm long, with floral
remnant persistent, ripening in June-August.
More than 50 white radials in each areole.
An mature specimen from Vista Hermosa, Querétaro, Mexico (almost
20 years old)
Cultivation: This plant
is not famous for being easy to cultivate, but in good conditions
it grows without difficulty. It is especially sensitive to over-watering.
So careful watering and an open
potting soil are a must.
the use of
peat or other
humus sources in the
to the potting mix, which must be moderately acidic.
Can be sensitive to frost (but if dry
plants are resistant to
-5° C). Requires
to reach its full potential
achieve success in
A winter rest that allows the plant to shrivel (perhaps losing up to
25% of its summer height) will encourage flowering and long
survival. Be careful to encourage slow growth.
Provide very good
Propagation: Direct sow
after last frost. (it usually doesn't produces offsets).