Provide regular irrigation during the spring and summer, watering whenever soil is dry. During the winter, keep as dry as possible, being careful not to water on cold, humid, or overcast days. Do not keep a saucer beneath pots either, as this will lead to root rot.A. subulata is not very particular about soil quality, as long as substratum is well-draining. However, to encourage growth, plant in a combination of loam, sand, cactus potting soil and 25-50% pumice, maintaining a pH between 6.1 and 7.8.
When first siting, the Eve’s pin cactus should be planted in the shade, and gradually introduced to sunlight. Once accustomed, remove from shade and provide direct sun whenever possible, as A. subulata thrives on light.
The cold tolerance of A. subulata is poor, with death occurring below 20°F (USDA hardiness zones 9a to 10b). As such, it is not recommended to expose A. subulata to temperatures below 25°F for long periods of time, despite the tolerance of occasional cold nights. In fact, specimens should be brought indoors when night-time temperatures drop under 41°F to avoid the formation of epidermal spots. Additionally, during the winter, cacti should be transferred to a cooler location that still receives bright lighting, to encourage growth.
Propagation is possible through hardwood or softwood cuttings, root cuttings, stem division, and through seed. Stem division is the easiest method, with the pads rooting easily when planted in soil. Water sparingly until roots have developed. Additionally, always wear gloves when handling, to protect from the sharp spines or stinging fruits.
