Plant Care Bishop's Cap Cactus

Bishop's Cap Cactus


Astrophytum myriostigma nudum

How to care for Bishop's Cap Cactus


How often to water your Bishop's Cap Cactus

Water needs for Bishop's Cap Cactus
0.5 cups
every 9

Bishop's Cap Cactus needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Bishop's Cap Cactus

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Bishop's Cap Cactus in your home

Light needs and placement for plant Bishop's Cap Cactus: 3ft from a window
3ft or less from
a window

Bishop's Cap Cactus may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.

Place it less than 3 feet from a south-facing window to maximize the potential for growth.

Select your city to see how the current weather in your area affects the placement of Bishop's Cap Cactus in your home 🏡.


How to fertilize Bishop's Cap Cactus

Nutrient, fertilizer, and repotting needs for Bishop's Cap Cactus: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Bishop's Cap Cactus after it doubles in size or once a year—whichever comes first.

Care Summary for Bishop's Cap Cactus

Bishop's Cap Cactus

Bishop's Cap Cactus

Greg recommends:


0.5 cups every 9 days


< 3ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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