Astrophytum asterias ‘Fukuryu’ XL is an exceptionally rare and highly prized mutation of Astrophytum asterias, valued for its dramatic raised ribbing, dense speckling, and unmistakable sculptural presence. A member of the Cactaceae family and native to the deserts of northern Mexico and southern Texas, this extraordinary cultivar stands out for its thickened “extra ribs” (a hallmark of the Fukuryu mutation), which create a textured, dragon-scale appearance across its dome-like body.

This XL specimen showcases fully developed “Fukuryu lines” — raised, bumpy ridges that run irregularly across its surface, combined with snowy white flecking that forms intricate constellations over deep green skin. Mature plants often display strong symmetry enhanced by these extra growth formations, making each one a completely unique living sculpture. During summer, it may also produce striking yellow flowers with orange throats — the perfect contrast against its heavily patterned body.

Rare, ornamental, and deeply collectible, Astrophytum asterias ‘Fukuryu’ XL represents the pinnacle of Astrophytum cultivation — a masterpiece for any serious cactus enthusiast.

Astrophytum asterias ‘Fukuryu’ XL – Care Guide

Light

Thrives in bright, indirect to lightly filtered sunlight. While it enjoys plenty of light to maintain strong markings and compact growth, avoid harsh midday sun that may scorch the textured epidermis. A bright windowsill, greenhouse bench, or LED grow-light setup is ideal.

Watering

Water sparingly and carefully. Allow the soil to dry completely between waterings, then water deeply and let all excess drain away. Overwatering is the biggest risk, especially with textured or mutated forms like Fukuryu. In winter, water only once every 4–6 weeks.

Temperature and Humidity

Temperature: Prefers warm temperatures between 18–32 °C; avoid temperatures below 10 °C.
Humidity: Low humidity is essential. Provide good airflow to prevent fungal issues and protect the raised Fukuryu tissue from excess moisture.

Soil and Potting

Use a very free-draining mineral cactus mix — ideally a blend of pumice, coarse sand, grit, akadama, and a small amount of cactus compost. Astrophytum thrive in lean, airy substrates. Repot every 2–3 years in spring, using a shallow pot to support its flattened body shape.

Feeding

Feed lightly every 6–8 weeks during spring and summer with a diluted, low-nitrogen cactus fertiliser. Avoid feeding heavily, as excess nutrients can distort growth. Do not fertilise in winter.

Pruning and Maintenance

No pruning required. Remove dried flowers as needed. Use a soft brush to remove dust from the textured surface, taking care not to damage the raised Fukuryu ridging.

Growth and Maturity

A slow-growing species, Astrophytum asterias ‘Fukuryu’ develops increased character with age — thicker ridges, denser flecking, and more prominent texture. An XL plant indicates many years of cultivation, producing a larger, more impressive specimen with advanced morphological development.

Common Issues

• Rot: From overwatering or poor drainage.

• Sunburn: If exposed to intense direct sun.

• Wrinkling: Temporary underwatering — usually easy to correct.

• Pests: Occasionally affected by mealybugs or spider mites — treat gently with alcohol or neem oil.

Background and Benefits

The Fukuryu mutation originated in Japan, where Astrophytum breeding is a revered horticultural art form. The word Fukuryu translates to “hidden dragon,” reflecting the dramatic raised ridges that distinguish this cultivar from standard Astrophytum asterias. These unique structures make every plant one-of-a-kind and highly desirable among collectors.

This XL grade represents exceptional quality and maturity — the result of many years of careful cultivation. Few cacti combine symmetry, texture, and rarity as effortlessly as the Fukuryu asterias.

Quick Care Summary

• Light: Bright, indirect to lightly filtered sun

• Water: Let soil dry completely; water sparingly

• Temperature: 18–32 °C; avoid below 10 °C

• Humidity: Low; good airflow required

• Soil: Free-draining mineral mix – pumice, sand, grit, akadama

• Feed: Every 6–8 weeks in spring/summer

• Growth: Slow-growing; dome cactus with raised Fukuryu ridges and dense white speckling

⚠️ Toxicity note: Non-toxic; handle carefully as the plant may have short spines or rough textures.

Styling Tip

Showcase your Astrophytum asterias ‘Fukuryu’ XL in a shallow, minimalist ceramic or stone pot that highlights its extraordinary texture and symmetry. Surround with fine pumice or decorative gravel to emphasise its sculptural form. Ideal for curated cactus shelves, greenhouse displays, and Japanese-inspired arrangements, this rare specimen brings refined desert elegance and botanical artistry to any collection.