Selenicereus spinulosus, commonly known as vine-like moonlight cactus, is a perennial, climbing cactus native to rocky and arid regions of eastern Mexico and is also found in the lower Rio Grande Valley of Texas. It typically inhabits sun-exposed limestone outcrops, where it uses other plants as support to gain access to light. This species can reach substantial lengths as it climbs, with scandent stems that feature 4-6 ribs and are adorned with small, acicular spines that provide a distinctive texture.

The vine-like moonlight cactus is notable for its nocturnal flowers, which are variable in size, ranging from 3-6 inches long, and exude a captivating fragrance. These blooms open at night and can remain open for 2-3 days, showcasing their white to pale yellow coloration. The plant’s preference for full sun, light watering, and well-drained soils makes it a suitable candidate for rock gardens, xeriscaping, and as an ornamental in warm climates. It is easy to cultivate and flowers readily, making it a rewarding choice for gardeners interested in night-blooming species. While it is generally free from serious pests and diseases, overwatering can lead to root rot, so proper soil drainage is crucial. Additionally, as a climbing cactus, it may require support structures when grown in cultivation to mimic its natural growth habit.CC BY-SA 4.0