Hibiscus mutabilis, commonly known as Confederate Rose or Cotton Rose, is a deciduous shrub native to southern China and Taiwan. The plant is prized for its distinctive flowers that change color throughout the day—opening white or pale pink in the morning and deepening to rich pink or red by evening. Seeds have a hard outer coat and benefit from scarification and warm water imbibition, with germination typically occurring within 7-21 days under optimal warm, humid conditions.
Before sowing
Scarification combined with warm water imbibition significantly improves germination success. Scarification is optional but recommended; water imbibition is mandatory.
Sowing
What to expect
Tips
Use a heat mat to maintain consistent soil temperature between 75-85°F (24-29°C). Keep humidity high (75-90%) using a seed tray with a dome. Provide bright light without direct sunlight during germination; after sprouting, place seedlings under fluorescent or LED grow lights for 14-16 hours daily. Avoid waterlogged soil—maintain consistent moisture but not soggy conditions. Once seedlings develop 2-3 sets of true leaves, transplant into larger individual pots. Harden off seedlings gradually for 7-10 days before planting outdoors. Handle seedlings carefully as stems are fragile.
Sources: Gardening Know How, National Garden Bureau, MasterClass, Southern California Hibiscus Society, Pure Asia Seeds, Plantophiles, Outside Pride
