Astrophytum myriostigma

3spine.gif    Cactus Seed Kit Growing Instructions

Astrophytum myriostigma 32 Seeds & Kit


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Cactus Seed Growing System Kit Instructions

Step One: Remove plastic wrap from seed starting supplies; 10oz cup, peat pot, seed package and plastic baggie containing growing medium.


Step Two: Pour growing medium into peat pot at bottom of 10oz cup, and set plastic baggie aside.


Step Three: Pour 1/8 cup of distilled or filtered water into 10oz cup, soaking the growing medium and peat pot. Water may take several minutes to soak in.


Step Four: Open seed package and sprinkle seeds on top of wet growing medium.


Step Five: Keep seeds wet inside of plastic baggie, and then remove baggie after seeds begin to germinate.


Ambient daytime temperature for seeds to germinate will need to be over 70 degrees Fahrenheit. Germination times will vary between 1 to 4 weeks, and some cactus seeds may germinate as late as 2 years after having been planted.


After seeds begin to germinate remove plastic baggie keeping seedlings uncovered. Water seedlings alternating between wet and dry growing medium until seedlings are large enough to transplant into their own small flower pots.


Astrophytum myriostigma

Adult Plant Growing Information

3spine.gif Five-Spine Rating - 3?

Yes - small container size plant. This variety will occupy a small flower pot comfortably and remain a manageable sized house plant.

This variety will do their best as houseplants with lots of sun and they become stressed with inadequate light which could result in poor health or even death.

Yes - does well with cool winter time temperatures. This variety will tolerate temperatures down below 50 °F. if the roots are kept dry, and will do very well in a home with energy saving thermostat setting.

This variety stores much of its water in the root system and will need a large or deep pot to accommodate their extensive roots.

Yes - flowers easily as a house plant. This variety is likely to flower as a house plant, but results will depend on a variety of growing conditions.

good locations

Potential living space locations include; East, West windows, but a South window or a three to four seasons room will work better where the plants get more sun. This species will tolerate very cool days and cold nights, but will need the temperatures to remain above 20 °F. In general for this species; myriostigma must never left outdoors unless it is being kept in a climate very similar to its natural habitat. However, in the case of the myriostigma plants being sold on this site, they have been propagated and grown in a wet climate, and they will benefit from being outdoors where they will receive direct sun and rain. Astrophytum myriostigma can do well on a very sunny windowsill, but it is a plant that requires a lot of sun.

Most plants continue to grow only having 5 ribs, but sometimes plants may increase the number of ribs as they grow depending on the individual plant genetics.


Myriostigma grows from 4 to 8 inches wide, and can get a few feet tall as an older plant. They keep a globular appearance for many years, before they begin to get tall. This cactus has no spines, and instead has small felty dots where the spines would be along the ribs. Its common name might fit more if these plants were red, but it is sometimes named 'Bishop's Cap'. The tend to have small flowers, and almost always yellow in color.


Mexico, highlands of central northern places.

seed propagation origin

Plants and seeds are grown and propagated by

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