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Cotinus 'Grace' (Grace smoke tree)
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Cotinus 'Grace'

Grace smoke tree

Hybrid of garden origin — {C. coggygria} 'Velvet Cloak' × {C. obovatus}; bred by Peter Dummer at Hillier Nurseries, England

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At a Glance

TypeShrub
HabitUpright
FoliageDeciduous
Height15-20 feet (4.5-6 m)
Width15-18 feet (4.5-5.4 m)
Maturity5 years

Growing Zones

USDA Hardiness Zones

4 - 9
These zones indicate the coldest temperatures this plant can typically survive.
What's my zone? →
Frost Tolerancehardy

Overview

Cotinus 'Grace' is Grace smoke tree (hybrid smoke bush), a vigorous upright deciduous shrub growing 15-20 feet (4.5-6 m) tall and 15-18 feet (4.5-5.4 m) wide. A hybrid of C. coggygria 'Velvet Cloak' × C. obovatus (American smoke tree). Purple to wine-red rounded leaves 3-5 inches (7-13 cm) — larger than C. coggygria (2-3 inches / 5-7 cm). The leaves are translucent when backlit by sun. Deep pink-purple smoke plumes in June-July — larger plumes than C. coggygria due to the C. obovatus parentage. Turns red, scarlet, and orange in fall. In Anacardiaceae. The C. obovatus parentage gives 'Grace' larger leaves, larger smoke plumes, and more vigorous growth than pure C. coggygria cultivars. The large vigorous size (15-20 feet / 4.5-6 m) is the primary space limitation. Same verticillium wilt susceptibility as C. coggygria. Same skin-irritating sap. Full sun required for purple color. Deer-resistant. Drought-tolerant once established. Toxic to pets. Zones 4-9. Full sun. Growth rate is fast.

Native Range

Hybrid of garden origin — C. coggygria 'Velvet Cloak' × C. obovatus. Bred by Peter Dummer at Hillier Nurseries, England.

Suggested Uses

Grown as a specimen shrub or small tree in large gardens spaced 15-18 feet (4.5-5.4 m). Large purple leaves. Large smoke plumes. Vigorous — requires space. Translucent foliage when backlit. Deer-resistant. Toxic to pets. Zones 4-9.

How to Identify

Identified by large purple to wine-red rounded leaves 3-5 inches (7-13 cm) — translucent when backlit — and deep pink-purple smoke plumes on a vigorous large shrub. The large leaf size (3-5 inches / 7-13 cm vs. 2-3 inches / 5-7 cm in C. coggygria) and the vigorous growth distinguish 'Grace' from C. coggygria Purpureus Group. In Anacardiaceae.

Appearance

Size & Dimensions

Height15' - 20'
Width/Spread15' - 18'

Reaches mature size in approximately 5 years

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~6 weeks
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Early to midsummer (June-July). Tiny yellowish true flowers in loose panicles. Deep pink-purple smoke plumes (elongated pedicels) persist 4-6 weeks — larger than C. coggygria. Bee-pollinated.

Detailed Descriptions

Flower Description

Tiny yellowish true flowers; deep pink-purple smoke plumes — larger plumes than C. coggygria

Foliage Description

Purple to wine-red, large rounded, 3-5 inches (7-13 cm) — larger than C. coggygria (2-3 inches / 5-7 cm); translucent when backlit by sun; turns red, scarlet, and orange in fall

Growing Conditions

Sun Requirements

Requires 6-10 hours of direct sunlight daily
• Full Sun: 6+ hours of direct sunlight
• Partial Shade: 3-6 hours of direct sunlight
• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range5.5 - 7.5(Neutral)
357912
Soil Types
Drainagewell drained

Water & Climate

Water Needs

Low

Frost Tolerance

hardy

Time to Maturity

3-5 years

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Full sun (6+ hours — required for purple foliage). Well-drained poor to average soil pH 5.5-7.5. Vigorous — reaches 15-20 feet (4.5-6 m) without pruning. Annual coppicing in March controls size but eliminates smoke. Verticillium wilt susceptible. Sap irritates skin. Deer-resistant. Toxic to pets. Zones 4-9.

Pruning

Two approaches: (1) For smoke plumes — prune lightly in March (smoke forms on 2+ year old wood); allow the shrub to reach full size. (2) For foliage display — coppice annually in March to 6-12 inches (15-30 cm); produces very large deeply colored leaves on vigorous 6-8 foot (1.8-2.4 m) new growth but no smoke.

Pruning Schedule

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early spring

Maintenance Level

low

⚠️ Toxicity Warning

Toxic to pets