How to Grow Peggy Clarke Plum

Peggy Clarke Plum

Prunus salicina 'Peggy Clarke'

tree

Peggy Clarke is a Japanese plum variety known for its large, sweet fruit with deep red skin and amber flesh. This self-fertile cultivar is relatively low-chill and produces abundant fruit in warm climates. It's a popular choice for home gardeners in subtropical and Mediterranean regions.

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Example Peggy Clarke Plum timeline · Pittsburgh, PA (Zone 6b)

Plant Peggy Clarke Plum
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Peggy Clarke Plum
Late summer into fall

Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Peggy Clarke Plum dates for your own zip code.

Growing Conditions

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Sun: Full sun, 6-8 hours daily minimum

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Water: Regular watering, especially during fruit development. Keep soil consistently moist but not waterlogged. Reduce watering in winter. Drip irrigation works well for established trees.

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Spacing: 240 inches

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Days to maturity: 2-3 years to first fruit; full production at 4-5 years

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Planting depth: Same depth as rootball; do not plant deeper than original container level

Soil

Type: Well-draining loamy soil

pH: 6.0-7.0

Amendments:

compost aged manure perlite for drainage if needed

Growing Zones

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Thrives in zones 8-10; best in warm climates with mild winters

8a 8b 9a 9b 10a

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Growth Stages

Establishment

First 1-2 years

Young tree focuses on root development and branch structure

Water deeply 2-3 times weekly. Stake if needed for support. Remove competing central leaders to establish open vase form.

Juvenile Growth

Years 2-3

Tree develops scaffold branches and foliage canopy

Prune to shape and remove crossing branches. Apply balanced fertilizer monthly during growing season. Maintain consistent moisture.

Flowering

2-3 weeks in early spring

White to pale pink blossoms appear on branches before leaf-out in early spring

Protect from late frosts if possible. Thin flower buds if heavy to prevent limb breakage. No pollinator needed (self-fertile).

Fruit Development

8-12 weeks after flowering

Small green fruits appear and gradually enlarge; color shifts from green to deep red

Thin fruits to 4-6 inches apart for larger, higher-quality plums. Water deeply and regularly. Apply nitrogen-free fertilizer if needed.

Harvest & Dormancy

Summer harvest; winter dormancy

Fruit reaches full sweetness and color; tree sheds leaves in late autumn

Harvest when fully colored and slightly soft. Prune in late winter while dormant. Reduce water in dormant season.

Companion Planting

Plan your garden →

Plant with:

comfrey borage clover buckwheat vetch lavender marigold

Avoid planting near:

fennel walnut brassicas directly under canopy

Common Pests

Hand-pick in early morning; use beetle traps away from tree; apply neem oil or insecticidal soap if severe
Drop and remove infested fruit; apply spinosad or malathion at petal fall and 10-14 days later
Increase humidity with water spray; apply neem oil or miticide if infestation is heavy
Spray with strong water stream; use insecticidal soap or neem oil for heavy infestations
Remove affected fruit and branches; apply sulfur or copper fungicide at bloom and weekly if humid; improve air circulation

Uses

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Fresh eating and desserts

Culinary

Peggy Clarke plums are excellent for eating fresh due to their large size, sweet flavor, and firm texture. They're also ideal for jams, preserves, pies, and baked goods. [source]

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Juice and beverage production

Culinary

The high sugar content and amber flesh make these plums suitable for fresh juice, smoothies, and fermented beverages like plum wine. [source]

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Digestive health support

Medicinal

Plums are traditionally used to support digestive health due to their sorbitol content and fiber, which may aid natural laxative effects. [source]

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Pollinator and wildlife attraction

Wildlife

Spring blossoms attract bees, butterflies, and other pollinators. The fruit provides food for birds and wildlife throughout summer. [source]

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Ornamental landscape value

Household

The tree offers beautiful spring blossoms and attractive foliage, making it both productive and ornamentally appealing in home gardens. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Harvest in June-July when fruit is fully colored deep red and yields slightly to gentle pressure. Pick gently to avoid bruising. Ripe plums will continue to soften for a few days if picked slightly early. Can be harvested with a gentle twist or by hand-picking. Use within a week for best quality, or refrigerate for up to 2 weeks.

Fun Facts

🌱 Peggy Clarke is self-fertile, meaning it can set fruit without a separate pollinator tree, though cross-pollination may increase yield.
🌱 This variety is relatively low-chill, requiring only about 100-200 chilling hours, making it ideal for warm climates where standard plums struggle.
🌱 The tree typically begins producing fruit within 2-3 years, faster than many other fruit trees, which is why it's popular among home gardeners.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Cultivar Full Sun

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