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Geum triflorum (Prairie Smoke)
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© mrabenberg, some rights reserved (CC-BY-NC) · iNaturalist

Geum triflorum

Prairie Smoke

Western and central North America from Yukon to northern New Mexico

At a Glance

FoliageEvergreen
Height6-12 inches (15-30 cm)
Width12-18 inches (30-45 cm)
Maturity3 years

Growing Zones

USDA Hardiness Zones

3 - 9
These zones indicate the coldest temperatures this plant can typically survive.
What's my zone? →
Frost Tolerancehardy

Overview

A low clump-forming evergreen perennial reaching 6-12 inches (15-30 cm) tall during flowering and 12-18 inches (30-45 cm) wide, growing from a stout woody crown. Leaves pinnately compound with 7-19 deeply toothed leaflets 0.5-1.5 inches (1.5-4 cm) long, persistent through winter; foliage may flush red-purple in cold weather. Flowering stems carry typically three nodding bell-shaped flowers per stem; sepals deep maroon-red and persistent, petals creamy-pink and shorter than the sepals. After fertilization, styles elongate into 1-2 inch (2.5-5 cm) feathery pink-purple tails that lift the seed head upright and form a smoke-like haze that persists on the plant for 4-6 weeks. Plants flower April through June and the seed display extends into July. Stands persist 8-12 years on suitable sites and gradually expand by short rhizomes to form patches of 2-3 feet (60-90 cm) across.

Native Range

Native to North America from western Canada (Yukon to Manitoba) south through the western and central United States to northern New Mexico, Arizona, and northern California, with isolated populations in the upper Great Lakes region. Found in dry prairies, montane meadows, gravel slopes, and sagebrush-pine ecotones from sea level to 11,000 feet (3,350 m).

Suggested Uses

Planted in dryland meadow plantings, native rock gardens, and slope plantings within zones 3-9 at 12-18 inch (30-45 cm) spacing. Mixes with bunchgrasses, Penstemon, and Eriogonum in xeric prairie plantings. Grows in containers of at least 3 gallons (11 L) with coarse drainage and full sun.

How to Identify

Identified by the persistent maroon-red sepals and the feathery pink-purple seed plumes 1-2 inches (2.5-5 cm) long that develop after fertilization. Leaves pinnately compound with 7-19 deeply toothed leaflets, rather than the simple lobed leaves of common Geum cultivars. Plants 6-12 inches (15-30 cm) tall in flower, with persistent basal foliage through winter. The seed-plume display lasts longer (4-6 weeks) than the actual flowers (1-2 weeks).

Appearance

Size & Dimensions

Height6" - 1'
Width/Spread1' - 1'6"

Reaches mature size in approximately 3 years

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~8 weeks
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April through June across the species' wide range, with peak flowering in May. Lower-elevation populations bloom from late March; alpine populations may flower into early July. Individual flowers last 7-10 days; the persistent seed-plume stage adds 4-6 weeks of pink-purple haze on the stems beyond the flower phase. Cool springs extend the flower phase by 1-2 weeks.

Detailed Descriptions

Flower Description

Creamy-pink petals with maroon-red sepals; pink-purple seed plumes

Foliage Description

Mid-green; red-purple in cold weather

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 Range6.0 - 7.5(Neutral)
357912
Soil Types
Drainagewell drained

Water & Climate

Water Needs

Low

Frost Tolerance

hardy

Time to Maturity

2-3 years

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Plants benefit from supplemental water during the first growing season; established stands tolerate 4-6 weeks of drought once roots reach 12 inches (30 cm) deep. Crown rot develops on poorly drained sites or where mulch contacts the woody crown. Plants are evergreen in zones 4-7 and benefit from light shade in zones 8-9 to reduce summer heat stress. Powdery mildew is rare. Stands persist 8-12 years on suitable sites; division every 5-7 years on heavy clay maintains vigor where rosettes thin from the center.

Pruning

Spent seed plumes can be cut at the base in July after the feathery display fades, but plants are commonly left untrimmed through winter as the dry plumes persist into autumn. Tattered winter foliage is removed in early spring as new growth emerges. Hard cutback into the woody crown delays flowering by 4-6 weeks.

Pruning Schedule

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summerearly spring

Maintenance Level

low

Container Growing

✓ Suitable for container growing

Minimum container size: 3 gallons

⚠️ Toxicity Warning

Non-toxic