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    • Photo of Astrophytum myriostigma flower by Dick Culbert

    Photo by Dick Culbert

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

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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

    More Options

    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

    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

    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

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