{"id":2303,"date":"2025-10-23T16:20:58","date_gmt":"2025-10-23T21:20:58","guid":{"rendered":"http:\/\/opuntiads.com\/oblog\/?p=2303"},"modified":"2025-10-23T16:20:58","modified_gmt":"2025-10-23T21:20:58","slug":"cactus-shapes","status":"publish","type":"post","link":"https:\/\/opuntiads.com\/oblog\/cactus-shapes\/","title":{"rendered":"Cactus Shapes"},"content":{"rendered":"

(Photograph =\u00a0Cleistocactus winteri, Peter Mansfeld)<\/sup><\/p>\n

Introduction<\/h2>\n

Cacti come in a few basic shapes that repeat across the family: columnar \u201ccandles,\u201d barrel or globose forms, pad-forming prickly pears, and climbing or epiphytic types with flattened stems. Those shapes are not just for looks\u2014they help plants manage heat, light, and water in tough habitats.<\/p>\n

The Details<\/h3>\n

Key features behind the shapes<\/h4>\n

Cacti grow from areoles<\/strong>\u2014small pads of tissue on the stem that produce spines, hairs, and flowers. Many species have ribs or tubercles that let stems expand after rain and contract during drought. In prickly pears (Opuntia), the flattened segments (\u201cpads\u201d or cladodes) are stems doing the work that leaves do in other plants.<\/p>\n

Common cactus shapes (quick tour)<\/h4>\n