Opuntia aciculata also tolerate temperatures from −5 to −12 °C. The fruits are edible and the soft pads ("nopales") can be cooked as vegetables. It also can be used to treat dyspepsia, mumps, or swelling, and in veterinary it is used to treat bruises. After burning of spines, the pads can serve as a good feed for cattle. Opuntia aciculata Opuntia aciculata, also called Chenille pricklypear, old man's whiskers, and cowboy’s red whiskers, is a perennial dicot and an attractive ornamental cactus native to Texas. It belongs to the genus "Opuntia" prickly pear cacti. It is also widespread in Nuevo Leon, Tamaulipas
Opuntia dulcis common in trans-Pecos Texas, New Mexico, and Arizona. It has been observed in the mountains of southern Nevada.. Opuntia dulcis Opuntia dulcis has been described as a variety of, and is confused with, "O. phaeacantha". However, "O. dulcis" is a larger plant with ascending branches, to 2 ft (exceptionally 4 ft). While it is a larger plant, immature specimens of O. dulcis may overlap in size with O. phaeacantha. "Opuntia dulcis" resembles "O. engelmannii" in some ways but does not become as erect or large as that species. Also, the spines of "O. dulcis" are finer than those of "O.