Purple Smoke Tree – A Living Cloud of Color in Your Garden

Few trees command attention like the Purple Smoke Tree (Cotinus coggygria 'Purpureus'). From late spring through midsummer, it erupts in billowing plumes of feathery pink-purple blooms that look like puffs of colored smoke drifting over the canopy. Beneath that spectacle, deep purple oval leaves shift to brilliant magenta in fall — giving you four seasons of drama in a single, easy-care tree.

Whether grown as a bold specimen, a privacy screen, or a striking backdrop for perennial borders, the Purple Smoke Tree is one of the most visually rewarding trees you can grow from seed.

Product Specifications

• Common Name: Purple Smoke Tree / Smoke Bush
• Latin Name: Cotinus coggygria 'Purpureus'
• Type: Perennial Deciduous Shrub / Small Tree
• Hardiness Zone: 4–9
• Mature Height: 10–15 feet tall and wide
• Foliage: Deep purple in summer, magenta-red in fall
• Bloom Color: Fluffy pink-purple plumes
• Bloom Time: Late Spring through mid-August
• Light: Full Sun
• Water: Regular; drought-tolerant once established
• Soil: Rich, well-draining soil
• Difficulty: Easy
• Quantity: 30 Seeds

Why Gardeners Love the Purple Smoke Tree

• Spectacular multi-season interest — purple foliage, smoky blooms, and fiery fall color
• Blooms for 6–8 weeks from late June through mid-August
• Drought and heat tolerant once established — low maintenance after the first season
• Works beautifully as a specimen tree, hedge, or mixed border backdrop
• Hardy in zones 4–9 — suitable for a wide range of climates

Sowing Instructions

• Stratification (Required): Seeds must be cold-stratified at 3–5°C (37–41°F) for 4 months before sowing. Place seeds in a damp paper towel in a sealed bag in the refrigerator.
• Sowing: After stratification, sow indoors at any time of year. Plant seeds at ½ inch (1.2 cm) depth in well-draining seed-starting mix.
• Light: Place in a full-sun position or under grow lights.
• Transplanting: When seedlings are large enough to handle, prick out into individual pots. Harden off before transplanting outdoors.
• Outdoor Planting: Choose a sunny, well-drained location. Space plants 10–15 feet apart to allow for mature spread.

Frequently Asked Questions

Why do smoke tree seeds need cold stratification?
Smoke tree seeds have a natural dormancy mechanism that mimics winter conditions. Cold stratification (4 months at 3–5°C) breaks this dormancy and signals the seed that it's safe to germinate. Skipping this step will result in very poor or no germination.

How long does it take for a smoke tree to bloom from seed?
Grown from seed, Purple Smoke Trees typically begin blooming in their 3rd to 4th year. The wait is well worth it — once established, they bloom reliably every year for decades.

Can I grow a smoke tree in a container or as a bonsai?
Yes! Young smoke trees can be trained as bonsai or grown in large containers. Their dramatic foliage and sculptural branching make them excellent bonsai subjects. Use a well-draining bonsai mix and prune regularly to maintain shape.

Is the Purple Smoke Tree deer-resistant?
Generally yes — the aromatic foliage of Cotinus is not preferred by deer, making it a good choice for gardens in deer-prone areas.

How do I care for a smoke tree after planting?
Water regularly during the first season to establish roots. Once established, smoke trees are quite drought-tolerant. Prune in late winter or early spring to shape the plant and encourage vigorous new growth with the best foliage color.

Pros and cons

• Flowering
• Drought resistant