Astrophytum onzuka

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Close-up top view of an Astrophytum onzuka succulent with speckled, star-shaped grayish-white skin, set among mixed-color gravel.
Astrophytum onzuka succulent with distinctive speckled patterns, displayed on a rocky surface—ideal for collectors and enthusiasts.
Close-up top view of an Astrophytum onzuka succulent with white speckled patterns, set among gray and white rocks in a planter.
Top view of an Astrophytum onzuka, a rare four-lobed succulent with speckled skin in a pot filled with white and gray pebbles.
Close-up of an Astrophytum onzuka cactus with white and green speckled skin, nestled among gray and white pebbles in a pot.
Astrophytum onzuka, a rare succulent, shown growing on rugged rocks and thriving in its natural environment.
Close-up of Astrophytum onzuka cactus, featuring green and white speckled skin, nestled among pebbles in a container.
Close-up of the rare Astrophytum onzuka succulent with star-shaped white and green skin, set among small rocks and gravel.
Close-up of Astrophytum onzuka, a rare green succulent with white net-like patterns, nestled among white and gray stones in a planter.
Close-up of Astrophytum onzuka, a rare succulent with a unique speckled pattern, ideal for cactus collections or indoor gardens.
Astrophytum onzuka rare succulent in a brown plastic pot with tan rocks, displayed against a plain white background.
Close-up of Astrophytum onzuka, a rare succulent with white speckles, in a pot with light brown gravel against a plain white background.
Astrophytum onzuka, a rare succulent cactus with a distinctive speckled pattern, adds unique visual interest to any pot.
Rare Astrophytum onzuka with speckled gray-green skin in a red plastic pot of light gravel, displayed against a white background.
Close-up of rare Astrophytum onzuka, showing its star-shaped, speckled surface in a round pot with light gravel, softly blurred background.
A rare Astrophytum onzuka cactus with speckled detail in a brown plastic pot with pebbles, set against stone and green vines.
A small, round Astrophytum onzuka cactus in a brown plastic pot with gravel, set on wood with a stone wall and green vines behind.
Close-up of Astrophytum onzuka, a rare speckled cactus with bold white markings, in a pot of light rocks against a soft background.
Close-up of a rare Astrophytum onzuka succulent with a round, speckled body, white ridges, and dots on tan stones; blurred background.
Astrophytum onzuka, a rare succulent, displayed in its pot. Perfect for collectors or as a unique addition to any plant collection.
Close-up of a rare Astrophytum onzuka cactus in a pot with small rocks, showing its unique speckled surface and blurred green background.
Close-up top view of an Astrophytum onzuka succulent with speckled, star-shaped grayish-white skin, set among mixed-color gravel.
Astrophytum onzuka succulent with distinctive speckled patterns, displayed on a rocky surface—ideal for collectors and enthusiasts.
Close-up top view of an Astrophytum onzuka succulent with white speckled patterns, set among gray and white rocks in a planter.
Top view of an Astrophytum onzuka, a rare four-lobed succulent with speckled skin in a pot filled with white and gray pebbles.
Close-up of an Astrophytum onzuka cactus with white and green speckled skin, nestled among gray and white pebbles in a pot.
Astrophytum onzuka, a rare succulent, shown growing on rugged rocks and thriving in its natural environment.
Close-up of Astrophytum onzuka cactus, featuring green and white speckled skin, nestled among pebbles in a container.
Close-up of the rare Astrophytum onzuka succulent with star-shaped white and green skin, set among small rocks and gravel.
Close-up of Astrophytum onzuka, a rare green succulent with white net-like patterns, nestled among white and gray stones in a planter.
Close-up of Astrophytum onzuka, a rare succulent with a unique speckled pattern, ideal for cactus collections or indoor gardens.
Astrophytum onzuka rare succulent in a brown plastic pot with tan rocks, displayed against a plain white background.
Close-up of Astrophytum onzuka, a rare succulent with white speckles, in a pot with light brown gravel against a plain white background.
Astrophytum onzuka, a rare succulent cactus with a distinctive speckled pattern, adds unique visual interest to any pot.
Rare Astrophytum onzuka with speckled gray-green skin in a red plastic pot of light gravel, displayed against a white background.
Close-up of rare Astrophytum onzuka, showing its star-shaped, speckled surface in a round pot with light gravel, softly blurred background.
A rare Astrophytum onzuka cactus with speckled detail in a brown plastic pot with pebbles, set against stone and green vines.
A small, round Astrophytum onzuka cactus in a brown plastic pot with gravel, set on wood with a stone wall and green vines behind.
Close-up of Astrophytum onzuka, a rare speckled cactus with bold white markings, in a pot of light rocks against a soft background.
Close-up of a rare Astrophytum onzuka succulent with a round, speckled body, white ridges, and dots on tan stones; blurred background.
Astrophytum onzuka, a rare succulent, displayed in its pot. Perfect for collectors or as a unique addition to any plant collection.
Close-up of a rare Astrophytum onzuka cactus in a pot with small rocks, showing its unique speckled surface and blurred green background.


Astrophytum myriostigma cv. Onzuka has snowy-white, heavily speckled epidermis with fabulous markings much like the ‘kabuto’ asterias. The white marking varies considerably from plant to plant and there exist an enormous number of different designs, and also plants change their appearance in age and they are full of surprises as they grows. As they become mature, they attain a maximum size of 8-10 cm (20) cm in diameter.

Although regarded as a choice and difficult plant in cultivation it is relatively easy to grow. It is sometime seen as a grafted plant but grows very well on its own roots too. Water sparingly from March till October and keep perfectly dry in winter at temperatures from 5 to 15 degrees centigrade. (but it is hardy to -7°C for short periods). The epidermis is harder than in the normal myriostigmas and cracks easily if plants are overwatered. In the rest period no high atmospheric humidity!! 

Sun Exposure: Light shade to full sun.
Be careful: The epidermis of ONZUKA is harder than in the normal myriostigmas and cracks easily if plants are overwatered.

Bloom Season

Spring

Flower Color

Magenta petals

Growth Rate

Fast growth

Hardiness Zone

10a to 11b

Mature Size

8 in

Resistance

12 c

Sun Exposure

Full sun (6+ hrs.)--Partial shade (3–6 hrs. sun)
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Astrophytum onzuka

sku: 1274

18 reviews
$ 37.00
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Please note: All Landscape Ready plants that are in a 6-inch pot or larger WILL NOT come with a pot as it will be shipped bare root.

Please note: Our large plants are many years old, and as a result, they might have minor scaring but will arrive 100% healthy and looking great.

Please note: Our large plants are shipped bare root. They are also many years old, and as a result, they might have minor scaring but will arrive healthy and looking great.

Please note: All perennial drought tolerant plants 6 inch and larger plants will be shipped bare root. Before sending perennial plants, we often trim the leafy parts and remove flowers or buds. This helps them survive shipping and adjust to transplanting better.
Perennial plants shipped Mon - Wed only.

Please note: Perennial plants shipped Mon - Wed only.

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Any plant that is 6" and larger that is not in our Houseplant category will be shipped bare root (without a pot).

What makes us different is the passion and the attention to detail in all we do here at Planet Desert. We are confident in the quality of our products. That’s why all our plants have a 100% satisfaction guarantee.

If you are not 100% satisfied with your purchase, you can return the product and get a refund or exchange it for another one — similar or not. Shipping charges may apply.

You can return a product for up to 14 days from the date of purchase. Please submit photos with your order number to info@planetdesert.com to initiate your return. Shipping fees may apply.

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  • Description
  • Key Plant Features


Astrophytum myriostigma cv. Onzuka has snowy-white, heavily speckled epidermis with fabulous markings much like the ‘kabuto’ asterias. The white marking varies considerably from plant to plant and there exist an enormous number of different designs, and also plants change their appearance in age and they are full of surprises as they grows. As they become mature, they attain a maximum size of 8-10 cm (20) cm in diameter.

Although regarded as a choice and difficult plant in cultivation it is relatively easy to grow. It is sometime seen as a grafted plant but grows very well on its own roots too. Water sparingly from March till October and keep perfectly dry in winter at temperatures from 5 to 15 degrees centigrade. (but it is hardy to -7°C for short periods). The epidermis is harder than in the normal myriostigmas and cracks easily if plants are overwatered. In the rest period no high atmospheric humidity!! 

Sun Exposure: Light shade to full sun.
Be careful: The epidermis of ONZUKA is harder than in the normal myriostigmas and cracks easily if plants are overwatered.

Bloom Season

Spring

Flower Color

Magenta petals

Growth Rate

Fast growth

Hardiness Zone

10a to 11b

Mature Size

8 in

Resistance

12 c

Sun Exposure

Full sun (6+ hrs.)--Partial shade (3–6 hrs. sun)
Attribute Value
Bloom Season Spring
Botanical Name Astrophytum myriostigma
Common Name Onzuka cactus
Dormancy October to april
Family Cactaceae
Flower Color Magenta petals
Genus Astrophytum
Growth Habit Funnelshaped
Growth Rate Fast growth
Hardiness Zone 10a to 11b
Mature Size 8 in
Native Area Japan
Resistance 12 c
Sun Exposure Full sun (6+ hrs.), Partial shade (3–6 hrs. sun)

Growers Quick Reference Guide - Key Features

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