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Echinocactus grusonii "setispinus" CACTUS ART
NURSERY

Cultivation and Mail Sale
of Cacti and Succulents.


This cultivar has very thin acicular spines, that become longer as the plant ages.
Older specimens are really spectacular.

 

Description: This plant differs from the common Golden barrel cactus (Echinocactus grusonii) only for the fine spination. Spines are yellowish-white, very thin acicular, that become longer as the plant ages, 2 to 7 cm long. Except for the spines it is identical in shape and size to the standard species.  It has a single slowly growing globe-shaped stem that became elongated (barrel-shaped) in maturity, up to 90cm  in height and spread. This stem is pale green and heavily ribbed with numerous areoles sprouting radial, yellow spines. They normally offset with advanced age and a few multiples occur even at small sizes.
The flowers are produced from end of spring to summer only on larger mature specimens receiving enough full sun. Flower are diurnal,  vivid yellow (4-5 cm wide) and form a circular ring at the top of the plant, but are not very visible being small in relation with the size of the barrel, and lost into the creamy coloured wool at the plant apex.
 


This plant differs from the common Golden barrel cactus (
Echinocactus grusonii) for the fine spination. Spines are yellowish-white, very thin, needle-like and become longer as the plant ages, 2 to 7 cm long.

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Family: Cactaceae (Cactus Family)

Scientific Name: Echinocactus grusonii forma setispina

Origin Garden origin (Nursery produced cultivar)

Conservation status: Listed in CITES appendix 2.
 

 

 



Cultivation:
E. grusonii are
summer-growing and pretty easy plants to cultivate. They are suited for any rich, well drained soil  such us clay, pumice, lava grit, and only a little peat or leaf-mould. If potted, repot preferably in the spring, if their roots become cramped.  Generally, they should be repotted every other year in order to provide fresh soil. However, this doesn't necessarily mean they'll need larger containers. Fill about a quarter of the pot with broken crocks, gravel, etc. to promote good drainage. After repotting, do not water for a week or more. Water regularly during the aestival growth cycle (this plant need plenty of water, but do not overwater and let their soil dry out between waterings), and also needs to be avoided wetting the body of this plant while it is in sunlight. A wet cactus in the sun light can cause sun burning which can lead to scares or even fungal infections and death, keep rather dry in winter. No water should ever be allowed to stand around the roots. Feed with a high potassium fertilizer in summer.
Exposure: Outside they need a bright exposure, full sun or half shade in summer if the location is exceedingly hot or bright, inside needs bright light, and some direct sun. It can tolerate moderate shade, and a plant that has been growing in shade should be slowly hardened off before placing it in full sun as the plant will be severely scorched if moved too suddenly from shade into sun.
Frost Tolerance: Light frost protection required for safe cultivation, but can tolerate sporadic light frost.
Diseases and pests: Watch for infestations of mealybug, scale insects and spider mite. Plant in good conditions will start to  bloom when reach the diameter of 40-50 cm.

Photo of conspecific taxa, varieties, forms and cultivars of Echinocactus grusonii:

Photo gallery: Alphabetical listing of Cactus and Succulent pictures published in this site.

Photo gallery ECHINOCACTUS

 
Home | E-mail | Plant files | Mail Sale Catalogue | Links | Information | Search

All the information and photos in cactus art file are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.