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Photo by Dick Culbert

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Astrophytum myriostigma

Also Known As

Astrophytum coahuilense
Bishop's Cap
Bishop's Miter

Plant type

cactus / succulent

size

H: 10"-60"
W: 5"-10"

planting zones

9b-12

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Astrophytum myriostigma plant details

Astrophytum myriostigma is an evergreen cactus / succulent with blue foliage. In summer red and yellow flowers emerge followed by green and red fruit. Features fuzzy and glaucous texture. Grows well with sun - mostly shade and occasional - low water. Drought tolerant once established. Prefers to be dry in winter. Does well in average, gritty, lean, rocky and well-drained soil. A good option if you're seeking something heat tolerant and verticillium wilt resistant.

CHARACTERISTICS OF Astrophytum myriostigma

Plant type: cactus / succulent
Plant family: cactaceae
Foliage: evergreen blue
Mature size: 5 IN - 10 IN - wide, 10 IN - 60 IN - tall
Flowers: red and yellow blooms in summer
Uses: houseplant

GROWING CONDITIONS for Astrophytum myriostigma

USDA Zones: 9b - 12
Sun exposure: sun - mostly shade
Watering frequency: occasional - low
Resistant to: heat and verticillium wilt
Soil needs: average, gritty, lean, rocky and well-drained

Nursery contributed plant descriptions

Astrophytum myriostigma is a cool spineless cactus native to northern Mexico. It forms plump, fleshy, star-like shapes usually with 5 lobes or ribs. Plants are covered variably but usually fairly densely in small white speckles. Sweetly fragrant yellow flowers appear in summer. Our plants are are about 8 cm in diameter.

By: Phoenix Perennials and Specialty Plants Ltd.

Also known as the Bishop's Cap Cactus, though it is not a true cactus. This thick,leafless succulent has a lovely geometric pinwheel shape. Skin is gray-green with white spots. Huge yellow flowers on top in the spring.

By: Paradise Found Nursery

Solitary globular species, variable, to 10"d.; spineless areoles; Flowers yellow/red

By: Cactus Jungle

Keep dry in winter. Light Shade. Yellow Flowers with Red Centers. Indoor/ Outdoor. Astrophytum coahuilense with five ribs, has a surprising similarity to A. myriostigma. However, it is different in all characteristics regarding flower, fruit, seed and embryo which looks like in all details to Astrophytum capricorne. The differences into flower, fruit, seed and embryo and flecks are constant and permit in any case to distinguish Astrophytum coahuilense without problems from A. myriostigma. It looks like the bishop’s cap (A. myriostigma), but softer, more grey flecks that cover the plant even more than with the myriostigma. The flowers are yellow with a characteristic red throat, although can appear pure red or very seldom pure yellow. In the fruit which is red till olive-green coloured and basal opening are up to 200 seeds, similar as in the case of Astrophytum capricorne.

By: Moon - Sun Cactus & Koi Gardens

Garden photo gallery of Astrophytum myriostigma

Photo of Astrophytum myriostigma flower by Dick Culbert

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By: Dick Culbert

This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.

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Photo of Astrophytum myriostigma by Cactus Jungle

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By: Cactus Jungle

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Gardening facts about Astrophytum myriostigma plant

How to Grow Astrophytum myriostigma

Sun Exposure
- sun - mostly shade
Water Needs
- occasional - drought tolerant
Water Needs
- dry in winter
Soil Needs
- average
- lean
- well-drained
- rocky
- gritty
Special Situation
- heat tolerant
- verticillium wilt resistant

Features

Foliage Color
- blue
Flower Color
- red
- yellow
Fruit
- red
- green
Flower Season
- summer
Foliage Season
- evergreen
Texture
- glaucous
- fuzzy

Landscape groups by tags

See other plant types of Astrophytum for your garden

Astrophytum capricorne

aka Astrophytum capricorne aurea, Astrophytum capricorne var. aureum, Astrophytum niveum, Echinocactus capricornis, Goat's Horn Cactus

Plant Type

Cactus / Succulent

Zones

9a-12

Size

Height: 6"-36"

Width: 4"-6"

sun - mostly shade
occasional - drought tolerant
dry in winter

Photo of Astrophytum capricorne foliage, form by Stan Shebs

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Astrophytum ornatum

aka Astrophytum ornatum var. glabrescens, Echinocactus haageanus, Echinocactus holopterus, Echinocactus mirbelii, Echinocactus ornatus, Echinocactus tortus, Echinofossulocactus mirbelii, Echinopsis haageana, Monk's Hood, Star Cactus