What hardiness zones is Phedimus kamtschaticus suitable for?

Phedimus kamtschaticus is suitable for USDA hardiness zones 3, 4, 5, 6, 7, 8, 9.

What are the sun requirements for Phedimus kamtschaticus?

Phedimus kamtschaticus requires Full Sun.

How much water does Phedimus kamtschaticus need?

Phedimus kamtschaticus has Very Low water needs.

Phedimus kamtschaticus (Orange Stonecrop)

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Perennials

Phedimus kamtschaticus

Orange Stonecrop

Crassulaceae

NE Asia (Kamchatka, E Siberia, N China, Korea, N Japan; rocky slopes, cliffs, open montane areas)

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At a Glance

TypeSucculent

HabitSpreading

FoliageSemi-evergreen

Height4-8 inches (10-20 cm)

Width12-24 inches (30-60 cm)

Maturity2 years

Growing Zones

USDA Hardiness Zones

3 - 9

Zone 3 Zone 4 Zone 5 Zone 6 Zone 7 Zone 8 Zone 9

These zones indicate the coldest temperatures this plant can typically survive.

What's my zone? →

Frost Tolerancehardy

Key Features

Attracts Pollinators Attracts Butterflies Deer Resistant Drought Tolerant Container Friendly

Maintenancevery low

Overview

Phedimus kamtschaticus (syn. Sedum kamtschaticum) is a semi-evergreen, mat-forming perennial succulent reaching 4-8 inches (10-20 cm) tall with a spread of 12-24 inches (30-60 cm) and a dense, creeping habit. Native to northeastern Asia (Kamchatka, Siberia, northern China, Korea, Japan), this vigorous species produces flat-topped clusters 2-3 inches (5-8 cm) across of star-shaped, orange-yellow flowers in June-August. The alternate, oblanceolate to spathulate leaves are 1-2 inches (2.5-5 cm) long, fleshy, dark green, with prominent coarse teeth along the upper margins—more elongated and more distinctly toothed than P. ellacombianus. Growth rate is fast. Hardy to zone 3. More vigorous and spreading than P. ellacombianus. The flowers age to orange-red, extending color interest.

Native Range

Phedimus kamtschaticus is native to northeastern Asia—Kamchatka, eastern Siberia, northern China, Korea, and northern Japan—in rocky slopes, cliffs, and open montane areas.

Suggested Uses

Planted as a groundcover, in rock gardens, green roofs, or walls at 10-15 inch (25-38 cm) spacing. More vigorous than P. ellacombianus. Extremely cold hardy (z3). The orange-yellow to orange-red flower color change extends interest. Not suitable for shade or rich moist conditions.

How to Identify

Distinguished from P. ellacombianus by the more elongated leaves with coarser teeth, the slightly taller habit, and the orange-yellow (versus pure yellow) flower color that ages to orange-red. Distinguished from P. spurius by the orange-yellow (versus pink or white) flowers and the more elongated (versus rounded) leaf shape. The mat-forming succulent with coarsely toothed dark green leaves and orange-yellow flowers aging to orange-red is diagnostic.

Appearance

Size & Dimensions

Height4" - 8"

Width/Spread1' - 2'

Reaches mature size in approximately 2 years

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~5 weeks

Summer

Flat-topped clusters 2-3 inches (5-8 cm) of star-shaped orange-yellow flowers, June-August, aging to orange-red. Bloom duration is 4-6 weeks. The orange-red aging extends color interest.

Detailed Descriptions

Flower Description

Orange-yellow aging to orange-red; star-shaped in flat-topped clusters 2-3 inches; Jun-Aug

Foliage Description

Dark green; oblanceolate to spathulate fleshy 1-2 inches; coarsely toothed upper margins

Growing Conditions

Sun Requirements

Full Sun

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

sand loam rocky

Drainagewell drained

Water & Climate

Water Needs

Very Low

Frost Tolerance

hardy

Time to Maturity

1 year

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Plant in full sun in well-drained, lean soil (pH 6.0-7.5). Hardy to zone 3. Extremely cold hardy. Drought tolerant. Lean soil produces the most compact growth. May become open and leggy in shade or rich soil.

Pruning

Shear back after bloom to maintain compact form. Remove winter-damaged foliage in early spring.

Pruning Schedule

summer

Maintenance Level

very low

Container Growing

✓ Suitable for container growing

Minimum container size: 1 gallons

⚠️ Toxicity Warning

Non-toxic