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Gymnocalycium Horstii

Gymnocalycium Horstii

Regular price $10.00 USD
Regular price Sale price $10.00 USD
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Commonly Known as: Spider Cactus

Care Information: Some Gymnocalyciums are shade-seeking in the wild, among shrubs or grasses, while others grow completely exposed. Therefore, some will need light shading from the sun in the hottest months, but to overdo this will result in the loss of flowers.

The potting medium's balance should be sufficient to allow good drainage so that the plants do not sit in soggy soil for more than a day or two after watering.

Watering in the summer months, while the plants are growing well, can be frequent (weekly for small plants in small pots), but always allow the compost to dry out before rewatering. Watering in the winter months is unwise and certainly not necessary. The difficult times are spring and autumn.

Those species which produce offsets can be readily propagated by cuttings. Gymnocalycium seed germinates well when fresh and will keep for a few years if stored in cold conditions.

Scientific Classification:

Family: Cactaceae

SubFamily: Cactoideae

Tribe: Trichocereeae

Genus: Gymnocalycium

Origin: The native range of this species is from southern Brazil, eastern Paraguay, northeastern Argentina, to Uruguay. It occurs on rocky outcrops at elevations up to 980 feet (300 m).

Hardiness: USDA hardiness zones 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).


Shipping information

All plants are shipped bare-root unless otherwise noted. Orders ship Monday-Friday each week. Please allow 1-3 business days for your order to be processed. We ship within the USA and its outlying territories ONLY.

Plant Appearance & Sizing

Plant sizing is based on the diameter of the nursery pot (2", 2.5", 3", 4" etc), not the plant itself. Plants may be slightly larger or smaller than the pot they are grown in, depending on availability or time of year. While we do our best to ship plants as similar to those pictured as possible, please keep in mind that all plants are unique from one to the next and display color, shape, and growth variation based on the current environment, time of year, and other contributing factors. Please note that we ship our plants as dry as possible in the fall and winter months to prevent root rot or freezing. They will plump back up after planting!

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