Ortegocactus macdougallii Alexander
Ortegocactus macdougallii is a small clump-forming cactus with greenish-gray globular stems with rhomboid tubercles topped with a cluster of spines. The stems slowly grow to 1.6 inches (4 cm) in diameter. Each areole bears one central spine and 7 to 8 radial spines. The spines are black or whitish with a black tip and are 0.4 inches (1 cm) long. Flowers are yellow, funnel-shaped, up to 1.2 inches (3 cm) long, up to 2 inches (5 cm) in diameter, and appear in spring. Fruits are reddish, spherical, slightly extended, and up to 0.2 inches (0.5 cm) in diameter.
USDA hardiness zone 9a to 11b: from 20 °F (−6.7 °C) to 50 °F (+10 °C).
How to Grow and Care
Like so many of the small species of Mexican cacti, Ortegocactus is highly prized by collectors. Ortegocactus macdougallii likes light shade to full sun. It is often grafted since it is tricky to grow when on its own roots. Water moderately in summer and very carefully, if at all in winter. It shows a distinct intolerance to overwatering either by rotting off or bursting the epidermis. Grow Ortegocactus in a fast-draining mineral mix. To prevent growing a monster totally out of proportion to its attractive and natural form, you should limit the fertilizer.
See more at How to Grow and Care for Ortegocactus.
This species is native to Mexico (Oaxaca).
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