Astrophytum Asterias Yellow | Have You Met This Yellow Beauty!? |

Astrophytum asterias yellow are spectacular plants you may come across in the succulent world. Astrophytum asterias yellow plants highlight their symmetry. 

One might think that they have a close resemblance to flowers in terms of their appearance. They would be attractive for both pollinators and for humans as well. 

The symmetry usually comes up with cosmic patterns and with some attractive shapes too. in addition to their flowers, you could spot symmetry in their  leaves, roots and even in the stems as well.

It goes by the common names of star cactus, dollar cactus, sea urchin cactus and star peyote. These are native plants in the USA and in Mexico as well. 

Their appearance has made them inherit  these names.  Astrophytum asterias yellow come up in a plump star shape which perfectly goes with their name. So, if you are curious to learn about this beauty, spare some time and keep reading this article.

Astrophytum Asterias Yellow

How do I identify astrophytum asterias yellow 

Astrophytum asterias yellow could contain about 5-8 ribs which you may spot in brown to green or in green only. 

When they grow in their natural habitat, they would grow flat, and you could spot them almost flush particularly during hot and arid weather conditions. 

Their stems would be triangular shaped, and the ribs would consist of white areolas which have small white tufts.

They would reach a maximum height of 7 cm (3 inches). Further their maximum width would be about 15 cm (6 inches). When you grow them as houseplants, they will tend to take a round shape. 

Astrophytum asterias yellow produce flowers from March to May and they would be yellow in color. Those blooms would tend to take a funnel shape and would further consist of orange centers as well. 

They would usually arise at the top of the plants. This is one of the significant factors which you may use to identify the Astrophytum asterias yellow plants.

Moreover, they would produce a fruit of red-pink color as well. They would be oval shaped and would comprise of fuzzy hairs as well.

They will replace the flowers of the plants. You may probably get confused in identifying the Astrophytum asterias with Lophophora williamsii plants.

Size of the plant

Astrophytum asterias yellow plants would reach a maximum height of 7 cm (3 inches). Further they would be about 15 cm (6 inches) widespread.

Growth rate

Astrophytum asterias yellow are a slow growing set of plants which are quite similar to other plants’ growth patterns.

One look care guide

Botanical NameAstrophytum asterias yellow
Common NameStar cactus 
Sand dollar cactus
Sea urchin cactus
Star peyote
Plant TypeCactus
Mature Size7 cm (3 inches) height 15 cm (6 inches) widespread 
Sun ExposurePartial shade
Soil TypeWell-draining
Soil pHneutral to slightly alkaline
Bloom Timefrom March to May
Flower ColorYellow
Hardiness ZonesUSDA hardiness zones 8 to 9. 
Native AreaMexico , USA
ToxicityNon toxic
Average price 7USD

How do you take care of Astrophytum asterias yellow?

Light Requirement 

Astrophytum asterias yellow can survive with partial light. This is somewhat different to other species as Astrophytum asterias color would be intensified given that they get partial shade

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If you grow them as houseplants and if you think they are lacking sufficient sunlight levels, you could be tactful in locating artificial lights such as grow light closer to the plants.

Grow lights would be quite handy in this circumstance.

Temperature and humidity

Succulents and cactus in general are fond of growing in warmer temperatures and Astrophytum asterias yellow have the same requirements when it comes to temperature levels. 

They could withstand temperatures around 70 degrees Fahrenheit (21 degrees Celsius) during summer. On the other hand, when temperature decreases, you do not need to bring them indoors as these are cold hardy plants.  

They are tolerant of temperatures around 20 degrees Fahrenheit ( -6.6 degrees Celsius). However, if you expect further reduced temperature levels, it would be safer to bring them indoors.

In terms of the humidity levels, they would grow well in room humidity levels. In case there is a high humidity level, you may be tactful in locating dehumidifiers closer to your plants. Alternatively, you may use air vents as well.

Is it cold hardy?

Astrophytum asterias yellow are somewhat cold hardy plants.

Astrophytum Asterias Yellow


Astrophytum asterias yellow can produce flowers given that they get a well rested winter period

In order to provide that you need to water them less frequently and relocate the cactus in a much cooler place during the winter months. If you adhere to these tips, it will stimulate the flower blossoming of the plants.

They would usually flower from March to May. Astrophytum asterias yellow blooms would be yellow. Further they will comprise of centers in orange as well. 

In terms of the diameter, it would be about 3 inches. Once they finish blooming, they will transform into a fruit. You could spot them in pink, red or in gray. They will be hairy too.

USDA Hardiness Zone

Astrophytum asterias yellow prefer to grow in USDA hardiness zones 8 to 9. 

Watering Requirement

Astrophytum asterias yellow are somewhat in contrast when it comes to watering as they would prefer to have plenty of moisture occasionally. 

One might think, cacti used to grow in hot and dry weather conditions and Astrophytum asterias yellow are no different to them. Apparently, it is not! They will prefer to have a lot of moisture. 

However, at the same time make sure that you allow the soil to become dry between two watering sessions also. When watering, ensure that you water them thoroughly and deeply.

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Watering frequency wise, they will survive with once-a-month watering in general. Consider watering them more often if you live in much warmer conditions. 

No matter what, ensure that you do not leave the roots in waterlogged conditions. If you do so, it could pave the way for root rot and for some severe damages to the plants well being as well. You may cut back on watering them during winter so that they will not drown.

Soil Requirement Type / pH

You may proceed with any type of soil mix to grow these plants given that they have excellent drainage.

When they grow in their natural habitat, they would grow in rocky areas where there is clay or loam soil available. 

In terms of the right ph. of the soil mix, they will prefer to have a neutral to slightly alkaline potting medium.

You may find potting mediums which are specifically designed for succulents and for cactus. They would perfectly suit these plants.

Pot size Potting and Repotting

You could consider using a clay pot or a terracotta pot to grow them as these are all porous materials which would be beneficial for the plant’s growth. 

Further repotting wise, you could do it only if it is essential. Ideally you could go ahead with that during their active growing phase which could possibly be in the month of June.

Furthermore, you may consider repotting them when you spot them outgrown from their posts as well.

Moreover, when transplanting them, ensure that you go ahead with a pot which is slightly larger than the previous pot. 

Once you obtain the pot, you need to fill it with a fresh well-draining soil mix. Do not over water them or over feed the repotted plants as it could be harmful.

Where to Plant 

Plant them in a soil mix which is well-draining. Furthermore, you need to select a place where they can receive adequate sunlight levels as well.

Fertilizer and time of year

Astrophytum asterias yellow do not require regular feeding.

I recommend  using a balanced all purpose 20-20-20 fertilizer when feeding them. However, before you use it, make sure that it is diluted and only then apply.

Astrophytum Asterias Yellow 1 1


Astrophytum asterias yellow could go dormant during extreme winter conditions. During their dormancy, ensure that you keep them dry.


Astrophytum asterias are nontoxic plants.

Common bugs and illnesses

Root rot – Overwatering may result in root rot of the Astrophytum asterias plants. Literally if you leave the soil to become wet and if you do not use a well-draining soil mix, they could be the root causes for this condition. 

It is somewhat difficult to identify root rot well in advance. With that being said, if you spot your Astrophytum asterias plant’s upper part turning yellow and mushy, it is an indication to let you know that the plant is suffering from root rot. In addition to that, your plants may be stinking too. 

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When treating them, first take the plant out from the pot. After that, knock away the older soil around the plant’s roots. If you come across any rotten or black root parts, you need to immediately cut them off. 

When cutting them, ensure that you are using all sharp, sterile scissors or knives for this purpose. After that leave them in a hot and a dry place where they can develop callousness. Finally, you may plant them in a fresh pot. Consider watering them less often.

Mealybugs – You may come across mealybugs particularly between their ridges. They usually form a white cottony mass on the plant’s surface and are dependent on the Astrophytum asterias plants sap. 

To treat them, you may use a household insect spray, neem oil. Alternatively, you could use detergent or soapy water to rinse them off. You may continue doing it until you eliminate the infestation.

Scales – These are parasite pests types and they will depend on the plant’s sap. When scales invade the Astrophytum asterias plants, they will look sick and become wilted too. You may use a diluted detergent or soapy water to treat them.

Special Care tips

Astrophytum asterias could be maintained very easily.

However, I encourage you to get rid of the older blooms so that it will look pleasant. Above all, they could be perfect breeding places for pests

How to propagate astrophytum asterias yellow 

You may use the Astrophytum asterias seeds to propagate them. You could find the seeds in their flowers

You need to remove them from the dry flowers and plant them as regular seeds. This is the easiest way of propagating them and even a fresher in gardening can try doing this. 

Astrophytum asterias seeds are so fragile. Hence deal with them carefully. Furthermore, once you harvest them, you need to dig them in a well-draining soil mix immediately as they have a short life. Further there will be less chance to form roots as well.

Ideally you need to place them in a tray or in a container which is filled with a fresh cactus soil mix. Next, cover them with some potting soil. Take a plastic wrap and cover them so that humidity as well as the heat will remain within. 

Once the germination is complete, you may leave the specimen in a sunny and warmer place.

However, do it gradually. You may plant the new baby plants after a few weeks’ time. You may continue with the regular care afterwards.


Anybody would love growing Astrophytum asterias. Propagating them would be even more interesting. They are fabulous in their looks that would make anyone want to have them.

Astrophytum asterias could be grown by anybody be it a fresher in gardening or an experienced gardener. 

All you need to assure is that you provide them ample moisture levels, well-draining soil mix and sufficient levels of heat and light. 

Astrophytum asterias would be such great additions for your garden collection. One more value addition of having these plants is their ability to produce fantastic flowers.

Apart from all these, you may use them as gift items due to all these special characteristics. Happy gardening with Astrophytum asterias !

Credit to : Cacti Succulent Review
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About author

I’m Dr. Chamika, As a hobby love talking about plants and showing you that taking care of indoor plants. My website is knowledge I’ve learned over the years and continue to learn about growing succulents. If you’re a succulent lover, then you have come to the correct place.

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