Echinopsis ancistrophora ssp. arachnacantha
Scientific Name: Echinopsis ancistrophora ssp. arachnacantha (Buining & Ritter) Friedrich
Synonym: Echinopsis arachnacantha, Lobivia arachnacantha, Pseudolobivia arachnacantha
Family: Cactaceae
Sunset®: 16, 17, 21-27
USDA: 9b-12
Frost Tolerance: Hardy to 25°F (-4°C), for short periods, some clones are hardy to lower temperatures
Sun Exposure: Full sun to light shade
Origin: Bolivia
Growth Habits: Clusters freely, each head is up to 1.5 inches (4 cm)
Watering Needs: Regular water in spring to fall
The species name "arachnacantha" comes from the Greek for "with spider web-shaped thorns". This cactus still generally encountered under its older Lobivia arachnacantha name is a good beginner cactus. It is quite resistant and accasionally gets covered by bright yellow blossoms, that will attract even a non-cactophile spouse.
As Lobivia arachnacantha var. densiseta at the HBG (HBG 75774)
Blooming Habits:
The large 2 inches wide yellow flowers open during the day.
Propagation:
Requires to be kept below 45°F (7°C) in winter to flower well in the spring
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