Echinofossulocactus tricuspidatus

This species of cacti grows in high grass, it has spines that resemble dried grass leaves that make these plants almost stay invisible in their natural environment. These cacti are usually solitary and they sometime produce small clumps. What distinguishes them is their small yellow blooms. When they flower they develop 1 to 5 cm long cream/yellow/white flowers that usually have reddish or brownish throats.

Recommended temperature zone: USDA: 9b-11
Frost tolerance: Hardy to 25°F (-4°C)
Heat tolerance: Light shade in Phoenix in summer
Sun exposure: Some direct sun
Origin: Mexico (Guanajuato, Hidalgo, San Luis Potosí, Zacatecas)