Specifications These premium Cotinus coggygria seeds are strictly cleaned and screened to filter out shrunken, cracked and immature grains for stable germination. This multi-branched deciduous shrub grows rounded, oval green leaves that turn vivid scarlet and orange in autumn. Its unique cloud-like feathery flower clusters create a smoky haze effect above the canopy in summer. The small hard seeds develop after flowering and require stratification to break dormancy. Mature shrubs have strong drought resistance and grow into full rounded shape.
Product Advantages Cotinus coggygria offers dual ornamental value with summer smoke-like blooms and spectacular fall foliage, making it a classic deciduous landscape shrub. It tolerates poor soil and dry conditions once established. Pair it with other hardy ornamental shrub seeds to build a multi-season landscape garden.
Planting Method Step 1: Timing. Sow in autumn outdoors, or stratify seeds and sow in early spring. Optimal soil temperature for germination is 15–22°C. Step 2: Site preparation. Select a full sun location with loose, well-drained soil. Smoke tree hates heavy wet clay soil. Remove weeds and loosen the ground. Step 3: Seed pre-treatment. Cold stratify seeds for 60–90 days. Mix seeds with slightly damp sand and store in refrigerator to break hard seed dormancy. Step 4: Sowing. Plant seeds 0.5–1cm deep, space seeds 5–8cm apart in seed bed. Step 5: Water after sowing. Water lightly to keep soil slightly moist, avoid waterlogging. Step 6: Seedling emergence. Germination is slow and uneven, seedlings may sprout in 1–3 months. Keep seedlings under bright sunlight. Step 7: Transplanting. When seedlings develop 3–4 true leaves, transplant. Keep 1.5–2m spacing between mature shrubs. Step 8: Maintenance. Water only during long dry spells. Minimal fertilizer needed. Prune in late winter to control shape.
Suitable Climate Cotinus coggygria adapts to temperate climates. Optimal growing temperature is 10–28°C. It can withstand cold winters and summer heat. Good drainage is the most critical requirement.
Applications Perfect for landscape gardens, slope greening, garden borders, rock gardens and wildlife gardens. The feathery flower plumes can also be used for dried flower arrangements.
FAQ Q: Why is it called smoke tree? A: The mass of thin, feathery sterile flower stalks look like clouds of smoke floating above the shrub. Q: Is stratification required for seeds? A: Yes. The hard seed coat has dormancy; cold stratification greatly improves germination rate. Q: Does smoke tree need lots of water? A: No. It is drought tolerant after establishment. Overwatering causes root rot. Q: What pests affect Cotinus coggygria? A: Powdery mildew may occur in poor air circulation. Scale insects occasionally appear. Q: Can smoke tree grow in pots? A: Young plants can grow in large deep containers, but mature shrubs prefer open ground for best performance.
