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Golden Barrel Cactus
IntermediateEchinocactus grusonii
A large spherical cactus clad in golden spines, called the king of cacti. It grows into an imposing barrel over many years. Hardy and sun-loving.
About
The golden barrel cactus (Echinocactus grusonii) is a large globular cactus native to the arid limestone country of central Mexico, nicknamed the king of cacti for its dense armor of golden spines. Mature plants reach 30-80 cm across and sometimes over a meter tall, crowned with pale yellowish wool. Growth is very slow, taking decades to form an impressive specimen. Wild populations have crashed (dam construction and collection) and the species is listed as Critically Endangered on the IUCN Red List, but it is mass-propagated worldwide and all traded plants are nursery-grown. Cultivation is relatively easy: give it full sun and very fast-draining soil, water 2-3 times monthly in the growing season, and keep it dry and dormant in winter. Too little light dulls the spine color. Seedlings are cold-sensitive, so overwinter them dry indoors once temperatures fall below about 15°C. It is prized as a focal point in dry gardens and as a large collector's specimen.
Source: Wikipedia (CC BY-SA 4.0)
Basic Info
Origin
Arid central Mexico (Hidalgo and Querétaro)
Lifespan
Perennial (decades)
Size
30-80cm diameter
Temperature
5〜35℃
Humidity
30〜50%
Watering & Fertilizer
Minimal
Growing Tips
Lighting
Full sun; insufficient light dulls spine color
Watering
2-3x monthly in growth season; no water in winter
Substrate
Very fast-draining cactus mix; excess moisture rots roots
Cold
Seedlings are cold-sensitive; overwinter indoors below 15°C
Spines
Hard, sharp golden spines; handle with care
Golden Barrel Cactus FAQ
QWhat is the growing difficulty level for Golden Barrel Cactus?
Intermediate. A variety suitable for intermediate growers. Requires some cultivation experience and knowledge of environment management. Pay careful attention to temperature and humidity control.
QWhat is the ideal temperature for Golden Barrel Cactus?
The ideal temperature for Golden Barrel Cactus is 5〜35℃. Recommended humidity is 30〜50%. Avoid sudden temperature changes and maintain a stable environment.
QWhat is the lifespan of Golden Barrel Cactus?
The average lifespan of Golden Barrel Cactus is Perennial (decades). With proper cultivation environment and nutrient management, you can keep it healthy for a long time.
QHow large does Golden Barrel Cactus get?
The mature size of Golden Barrel Cactus is 30-80cm diameter. This may vary slightly depending on cultivation environment and individual differences.
QHow should I water and fertilize Golden Barrel Cactus?
Golden Barrel Cactus: watering & fertilizer — Minimal. Aim for appropriate frequency and amount.
QWhat is the typical price for Golden Barrel Cactus?
The price of Golden Barrel Cactus varies significantly by variety, characteristics, size, and lineage. Please check ボタちょく's price guide for the latest market information.
Last updated: June 26, 2026
References & Sources
Edited & verified by: BoTachoku Editorial Team
The classifications, regulations, and growing data on this page are created and verified based on the primary information database below.
Taxonomy & Authority
Accepted name: Echinocactus grusonii Hildmann, 1891
Synonyms: Kroenleinia grusonii (Hildmann) Lodé
Authority databases: Wikipedia
Nomenclature follows global taxonomic authority databases.
Regulations & Conservation Status
サボテン科 Cactaceae は科全体が CITES 附属書II。本種は野生個体がIUCN絶滅寸前(CR)だが、流通個体はすべて繁殖由来。附属書II例外(Astrophytum asterias 兜 等の附属書I)には該当せず。
Sources: CITES Checklist — Cactaceae spp. (Appendix II, whole family) / IUCN Red List
Regulations may change. Always verify the latest information with the relevant authorities.
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