{"id":4969,"date":"2025-12-15T21:01:26","date_gmt":"2025-12-16T03:01:26","guid":{"rendered":"https:\/\/opuntiads.com\/oblog\/?p=4969"},"modified":"2025-12-15T21:01:26","modified_gmt":"2025-12-16T03:01:26","slug":"cactus-seed-responses-to-temperature","status":"publish","type":"post","link":"https:\/\/opuntiads.com\/oblog\/cactus-seed-responses-to-temperature\/","title":{"rendered":"Cactus Seed Responses to Temperature"},"content":{"rendered":"

(Picture = Echinocactus platyacanthus)<\/sup><\/p>\n

Introduction<\/h2>\n

In deserts and semiarid habitats, temperature is the main cue that tells cactus seeds when to germinate. Most species respond to three \u201ccardinal\u201d temperatures\u2014T<\/strong>min (below which nothing happens), T<\/strong>opt (where germination is fastest and most complete), and T<\/strong>max (above which germination fails or seedlings are damaged). Because day and night temperatures swing widely in arid regions, many cactus seeds favor alternating<\/strong> temperatures rather than a constant warm setting.<\/p>\n

The Details<\/h3>\n