Plants in genus thelocactus
Thelocactus setispinus
Thelocactus setispinus, also known as the miniature barrel cactus, is a globular cactus native to southern Texas. It features silky yellow flowers with a deep red center that bloom from summer to fall. This cactus thrives in full sun and requires well-drained soil, with watering about once a week. It is frost-tolerant when kept dry and can withstand temperatures as low as 5°F. Its unique appearance and vibrant blooms make it a striking addition to any cactus collection.
Thelocactus hexaedrophorus
Thelocactus hexaedrophorus is a solitary, strongly armed cactus native to Mexico. It features grey to bluish-green coloring with reddish-white-brown central spines and yellowish-crimson tips. In summer, it blooms with light pink to almost white flowers. This cactus requires full sun and is frost tolerant to 41°F.
Thelocactus macdowellii
Thelocactus macdowellii is a summer-growing cactus native to northeastern Mexico, recognized for its award-winning garden merit. It features a light green stem that can grow up to 4 inches tall and wide, with funnel-shaped pink or magenta flowers that have a yellow center. This cactus requires full sun or light shade and a very porous potting mix for good drainage. It is frost-tolerant down to 20°F and benefits from a cool resting period in winter to enhance flowering.
Thelocactus conothelos ssp. aurantiacus
Thelocactus conothelos ssp. aurantiacus is a cactus with bright yellow flowers that bloom in spring. It prefers bright sun or filtered sunlight and is sensitive to frost, hardy to 19°F for short periods.
Thelocactus rinconensis
Thelocactus rinconensis is a globe-shaped solitary cactus native to northeast Mexico, known for its low ribs and raised, angular tubercles. It features black-brown central spines and needle-like radial spines, with funnel-shaped yellow or whitish flowers. This cactus grows about 15 cm high and 20 cm in diameter, making it a compact choice for cactus enthusiasts. Its unique appearance and vibrant flowers make it a standout addition to any cactus collection.