Plants can be transplanted at any season, or the joints or even fruit may be planted or laid on the surface of the ground, covered partly with soil and watered occasionally, whereupon they grow into new plants, making a few inches’ growth the first season. Plants grow best in clay or gravelly clay soil and may be given light irrigation monthly until well established. They are not injured by temperatures of twenty or twenty-five degrees below freezing, and grow indoors and out; in zero weather they require protection. Cursed Cholla; Devil Cholla (_Opuntia Stanlyi_) (Named for J. M. Stanly, artist of the Mexican Boundary Survey) How to identify and how it grows The Cursed Cholla, or Devil Cholla, is very appropriately named. Plants grow with prostrate and creeping stems, forming impenetrable masses several feet across. The stems are from a common center with the tips ascending, and the joints, which are as much as six inches long, are club-shaped and tubercled. The spines are very numerous and stout, also very sharp and swordlike, and will cause grief unless one is very careful. They grow a little more than two inches long, are a light yellow, and have short sheaths over their tips. The flowers are about three inches long and are yellow, and the fruit, which is club-shaped and about three inches long, is covered with white cottony hairs and needlelike spicules. These plants grow in the sandy soils of the desert areas of southern New Mexico and southern Arizona and adjacent old Mexico. How to grow Either prostrate rooted stems or joints planted at any season grow into plants. The seed sown in moist sandy soil grow easily. The plants grow in sandy or gravelly clay soils and should be watered monthly until well established. Temperatures as low as zero do not injure the plants, but with lower temperatures they should be protected. They grow outdoors or indoors. Whipple’s Cholla (_Opuntia Whipplei_) (Named after Lieutenant Whipple, in charge of the Whipple Expedition of 1853 and 1854) How to identify and how it grows