Over the past year or two, we’ve amassed a collection of Astrophytum Asterias. Our fascination with these unique cacti began when we purchased two from a local grower. However, describing them doesn’t do justice to the incredible variations they come in. So, let’s dive in and explore the world of Astrophytum Asterias hybrids!
Astrophytum Asterias: The Sand Dollar Cactus
Astrophytum asterias, also known as the sand dollar cactus, sea urchin cactus, or simply “astro,” is a species of cactus native to parts of Texas and Mexico. Let’s take a closer look at some of its characteristics:
- The cactus has a flat, round disc divided into sections known as ribs.
- Instead of spines or thorns, it features round tufts of hair called areoles.
- Its body is predominantly green with small white speckles.
- The flowers are commonly yellow with a red base.
- Fruits come in shades of green to pink and have a hairy texture.
- The seeds are tiny, measuring just 1 mm, and resemble a bowled shape.
Variations in Body and Speckles
Astrophytum Asterias var. nudum
This variation exhibits a dense mosaic of white spots all over the body. The spots can cover the entire plant or form patterns like a ‘V’ shape.
Astrophytum Asterias cv. super kabuto
In Japanese, “kabuto” means astrophytum. The term “super kabuto” refers to a super-sized astro with a dense mosaic of white spots. These spots can take on various arrangements, making each plant unique.
Astrophytum Asterias miracle
The miracle astrophytum has an intriguing history. Discovered in the wild and brought to Japan in the 1880s, it closely resembles the super kabuto. However, there are a few distinct differences:
- It is usually larger in size.
- The speckles on the miracle are oval and paper-like.
- When matured, it tends to take on a star shape.
- The speckles grow in size and density as it matures.
Due to crossbreeding, these variations have become less distinct, making it challenging to identify young seedlings until the defining features become more prominent.
Variations in Ribs
Astrophytum Asterias cv. fukuryu
“Fukuryu” can be interpreted in multiple ways in Japanese. When it comes to astrophytums, it refers to repeated ribs. For every rib, there is a less developed, rib-like structure without areoles beside it. This creates the signature look of a fukuryu astrophytum.
Astrophytum Asterias cv. ekubo
“Ekubo” means dimple. Some plants have little indentations below the areoles, resembling dimples. These lines are usually small and do not span the width of a rib.
Astrophytum Asterias cv. kikko
“Kikko” refers to a type of samurai armor with hexagonal-shaped plates. When the indentations on an ekubo become deeper and wider, they can form interesting shapes resembling the kikko armor.
Astrophytum Asterias cv. star-shaped
At first glance, this astrophytum appears star-shaped from the top. This occurs when the ribs curve inward towards the center. However, it’s essential to note that not all astrophytums with a star shape are classified as such, as bloating from excessive watering can create a similar appearance.
Variations in Areoles
Astrophytum Asterias cv. rensei
“Rensei” means “chained stars” or “joined heart” in Japanese. This cultivar has closely spaced areoles that form lines from the center to the base.
Astrophytum Asterias cv. rasen
“Rasen” means spiral. Astrophytums labeled as rasen have areoles that line up and twist around the center, creating spiral patterns.
Astrophytum Asterias cv. ooibo
“Ooibo” means big wart. In this variation, the areoles appear as warts on the surface. The size of the areoles may vary, with some growing as large as 1 cm when spread out.
Astrophytum Asterias cv. hanazono
“Hanazono” means “garden of flowers” in Japanese. This term describes astrophytums with non-uniform and wild growth of areoles. From a distance, it resembles a garden of white flowers set against a green backdrop.
Variations in Flowers
Astrophytum Asterias cv. akabana
Most astrophytum flowers are yellow, but some select breeds have pink or red blooms. “Akabana” literally means “red flower.” The body of this astrophytum closely resembles a typical variety, making it challenging to detect until it flowers. It’s best to seek out reputable nurseries with photos of the blooms to find this rare variety.
Astrophytum Asterias cv. showa
“Showa” refers to an era in Japan from 1926 to 1989. This breed possibly commemorates the emperor during that time. Showa flowers have thin petals that resemble fireworks. Like the akabana, it may be difficult to acquire.
Are Astrophytum Asterias Good for Beginners?
Absolutely! These cacti make great starter plants, and there are many affordable varieties available. They are incredibly low-maintenance and can survive for weeks without water. If you’re interested in starting your journey with astrophytums, check out our guide on caring for Astrophytum Asterias. We also share tips on finding some of the exotic cultivars mentioned here. We hope one of these adorable plants has caught your eye. Happy gardening!