Description
Hibiscus mutabilis, commonly known as Confederate rose or cotton rose, is a large, deciduous shrub or small tree in the mallow family (Malvaceae). Native to China and widely cultivated in warm climates, it can grow 2 to 5 meters tall and is admired for its spectacular flowers that change color over the course of a day, from white in the morning to pink and then deep rose by evening.
Hardy and fast-growing, it thrives in full sun with well-drained soil and makes a striking ornamental feature in gardens and landscapes. In addition to its beauty, the plant has a history of use in traditional medicine and attracts pollinators, adding ecological value to its ornamental charm.
Germination Guide
🌍 Southern China and Taiwan
Easy
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.
Germination
Germination time
Expect germination in
7 – 21 days
Temperature
Min 24°C
Ideal 27°C
Max 29°C
Substrate moisture
💧💧 High
Sowing depth
Lightly covered
Seed Pre-treatment
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Soaking — 24 hours
Soak seeds in warm water for 24 to 48 hours. Replace water 1-2 times during soaking. Soaking overnight alone is sufficient for improved germination.
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🔨
Mechanical scarification
Nick seeds lightly with fine sandpaper or a sharp knife to break the hard outer seed coat. Be careful not to damage the interior of the seed. Scarification is optional but significantly speeds up germination.
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Additional notes
Scarification combined with warm water imbibition significantly improves germination success. Scarification is optional but recommended; water imbibition is mandatory.
Substrate & Container
Recommended substrate
High-quality, sterile, lightweight seed-starting mix or potting soil. Must be light, porous, well-draining, and free of pathogens. Avoid fertilizer-enriched mixes.
Recommended container
Plastic seed tray or pot with drainage holes and transparent lid to maintain humidity. Seed starter trays with domes are recommended.
Growing 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.
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