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Astrophytum myriostigma (Bishop's cap)
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1 hour care
per year
per year
0.25m
Max height
Max height
0.3m
Max spread
Max spread
10-20 years
To maturity
To maturity
Plant details
Botanical name
Astrophytum myriostigma
Other names
Bishop's cap, Bishop's mitre, Bishop's hood, Monk's hood, Echinocactus myriostigma, Mitra, Bonete de Obispo, Astrophytum columnare, Astrophytum myriostigma var. columnaris, Star cactus
Genus
Astrophytum Astrophytum
Species
A. myriostigma - A. myriostigma is a tender, spherical, rarely columnar, ribbed, grey-green, spineless, perennial cactus covered with tiny, white-woolly scales. Large, funnel-shaped, pale yellow flowers, sometimes flushed red, bloom in summer.
Astrophytum myriostigma is: Evergreen
Habit
Rounded
Awards
RHS AGM (Award of Garden Merit)
Flower
Yellow in Summer
How to care
Watch out for
Specific pests
Scale insects , Mealybugs Scale insects , Mealybugs
Diseases
Generally disease-free
General care
Pruning
Requires no pruning.
Propagation
Sow seed at 21C (70F) in early spring.
Propagation methods
Seed
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Where to grow
Astrophytum myriostigma (Bishop's cap) will reach a height of 0.25m and a spread of 0.3m after 10-20 years.
Suggested uses
Conservatory, Containers, Drought Tolerant, Gravel, Indoor
Cultivation
Under glass, grow in cactus or loam-based compost with added limestone chips in bright, filtered light. Feed a low-nitrogen fertiliser monthly. From spring to early autumn, water thoroughly only after the compost is dry. In warm areas, grow in sharply-drained, poor, neutral to slightly alkaline soil in sun.
Soil type
Loamy, Sandy
Soil drainage
Well-drained
Soil pH
Alkaline, Neutral
Light
Full Sun
Aspect
South, West
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Tender in frost (H3), Indoor unheated (H2)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Astrophytum myriostigma
Other names
Bishop's cap, Bishop's mitre, Bishop's hood, Monk's hood, Echinocactus myriostigma, Mitra, Bonete de Obispo, Astrophytum columnare, Astrophytum myriostigma var. columnaris, Star cactus
Genus
Astrophytum Astrophytum
Species
A. myriostigma - A. myriostigma is a tender, spherical, rarely columnar, ribbed, grey-green, spineless, perennial cactus covered with tiny, white-woolly scales. Large, funnel-shaped, pale yellow flowers, sometimes flushed red, bloom in summer.
Native to
Mexico
Foliage
Evergreen
Habit
Rounded
Awards
RHS AGM (Award of Garden Merit)
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Colour
Flower
Yellow in Summer
How to care
Watch out for
Specific pests
Diseases
Generally disease-free
General care
Pruning
Requires no pruning.
Propagation
Sow seed at 21C (70F) in early spring.
Propagation methods
Seed
Monthly care advice
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Where to grow
Astrophytum myriostigma (Bishop's cap) will reach a height of 0.25m and a spread of 0.3m after 10-20 years.
Suggested uses
Conservatory, Containers, Drought Tolerant, Gravel, Indoor
Cultivation
Under glass, grow in cactus or loam-based compost with added limestone chips in bright, filtered light. Feed a low-nitrogen fertiliser monthly. From spring to early autumn, water thoroughly only after the compost is dry. In warm areas, grow in sharply-drained, poor, neutral to slightly alkaline soil in sun.
Soil type
Loamy, Sandy
Soil drainage
Well-drained
Soil pH
Alkaline, Neutral
Light
Full Sun
Aspect
South, West
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Tender in frost (H3), Indoor unheated (H2)
USDA zones
Zone 10, Zone 9
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Loamy, Sandy | Tell us... |
| Soil drainage: | Well-drained | Tell us... |
| Soil pH: | Alkaline, Neutral | Tell us... |
| Light: | Full Sun | Tell us... |
| Aspect: | South, West | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Tender in frost (H3), Indoor unheated (H2) | Tell us... |
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