Astrophytum myriostigma

Astrophytum myriostigma Lem.

light
Full sun
water
Little
tall
1.1 m
wide
15 cm

Cactaceae

Formerly Echinocactus myriostigma

When it flowers

Not known yet in the tropics: too few flowering observations to read a season from.

PetsNo pet-safety information yet
PeopleGardener's Path lists it as not poisonous (25 Oct 2026)

If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.

Something wrong with it?

About it

Grows as
Succulent subshrubKew's checklist, not yet checked
Climate
Desert or dry shrublandKew's checklist, not yet checked
Wild in
NE. MexicoKew's checklist, not yet checked
Light
Full sun (6 h or more)Read from Gardener's Path, one source
Height
61 cm to 1.5 mRead from Gardener's Path, one source
Spread
10 cm to 20 cmRead from Gardener's Path and Wikipedia, checked by a majority of its sourcesBacked by both sources. Sources differ: Gardener's Path 4–10 in; Wikipedia 10–20 cm
Water
Little: takes droughtRead from Gardener's Path, one source
Flowers
YellowRead from Gardener's Path and Wikipedia, checked by a majority of its sourcesBacked by both sources. Sources differ: Gardener's Path yellow; Wikipedia cream, orange, red, yellow
Coldest it survives
-1.1 °C (USDA zone 10a)Read from Gardener's Path, one source

Not known yet: heat, hottest it survives.

In other languages (4)

Spanish
Mitra, Biznaga, Birrete de Obispo
Dutch
bisschopsmuts
Chinese
鸾凤玉
Slovenian
škofovska kapa

Where this comes from

A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.