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Plum — Prunus spp. (European, Japanese, American Native)

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Plum — Prunus spp. (European, Japanese, American Native)

layout: base.njk title: Plum description: Growing Plum in West Virginia (Zone 6b/7a) category: fruit-tree

Quick Reference: See detailed growing information below

Type: Deciduous tree or large shrub
Family: Rosaceae
Sun: Full sun (6-8+ hours)
Water: Moderate (1-2 inches weekly)
Soil pH: 6.0-7.0 (slightly acidic to neutral)
Hardiness: Zones 3-9 (varies by species; American native hardiest)
Chill hours: 600-1,200+ (varies by species and variety)
Mature size: 12-20 ft tall x 10-15 ft spread (European/Japanese); 6-15 ft (American, often shrubby)

📅 Planting Calendar (WV Zone 6b/7a)

Method Timing Notes
Plant bare-root March 1 - April 15 While dormant; early spring
Plant container April - May or September - October Fall planting OK in Zone 7
Bloom time Early to mid-April HIGH frost risk; American natives bloom earliest
Harvest July to September (varies by type) European: late; Japanese: mid; American: mid
Years to first fruit 3-5 years (grafted), 5-8 years (seedling) American natives fruit youngest

🌱 Expected Yield

  • Young tree (5 yrs): 20-40 lbs
  • Mature tree (10+ yrs): 50-100+ lbs
  • Lifespan: 20-30 years (European/Japanese); 15-25 years (American)

🌿 Growing Conditions

Soil: Well-drained loam or sandy loam preferred. Plums tolerate heavier clay better than peaches or cherries but still need reasonable drainage. Incorporate 2-3 inches of compost before planting. pH 6.0-7.0 optimal. American native plums most adaptable to poor soils.

Rootstock: - Marianna 2624 (plum rootstock, vigorous, adaptable) - Myrobalan (seedling plum rootstock, common) - Krymsk 86 (hybrid, cold hardy, disease resistant) - St. Julian A (semi-dwarfing) - Seedling (American plum seedlings often used)

For WV: Marianna and Myrobalan most common. Krymsk for disease resistance.

Pollination: - European plums: Many are self-fertile ('Stanley', 'Damson', 'Italian Prune'). Some need pollinator. - Japanese plums: Most are self-incompatible and require cross-pollination with different variety. - American native plums: Usually self-incompatible; colony-forming, cross-pollinate naturally.

Bloom periods must overlap for cross-pollination. Bees are primary pollinators. Plant multiple varieties for best production.

Companions: - Nitrogen fixers: Clover, vetch in tree ring - Accumulators: Comfrey, yarrow, nettle - Beneficial insects: Dill, fennel, alyssum - Mycorrhizae: Inoculate at planting

Avoid: - Black walnut (juglone toxicity) - Tomatoes, peppers, potatoes (Verticillium wilt) - Previously planted Prunus sites (replant disease)

Pests: - Plum curculio: MOST SERIOUS plum pest. Weevil scars fruit, causes drops. Kaolin clay (Surround WP), beneficial nematodes, sanitation (collect dropped fruit). - Oriental fruit moth: Larvae bore into shoots and fruit. Pheromone traps, Bt or spinosad. - Aphids: Ladybugs, lacewings, insecticidal soap - Scale: Dormant oil in late winter - Japanese beetles: Hand-pick, milky spore for grubs - Birds: Will eat ripe plums. Net if severe. - Deer: Browse young shoots. Protect young trees.

Diseases: - Black knot: Fungal; causes black swollen galls on branches. PRUNE OUT 6-8 inches below knots, destroy. Disinfect tools. Can kill tree if unchecked. Most serious plum disease. - Brown rot: Fungal; causes fruit rot, blossom blight. Remove mummies, prune for air circulation. Sulfur or captan sprays preventively. - Plum pockets: Fungal; causes distorted, hollow fruit. Remove infected fruit. Copper sprays at bloom. - Bacterial spot: Leaf spots, fruit lesions. Resistant varieties essential. Copper sprays partial control. - Cytospora canker: Prune out infected wood.

Pruning: Prune in late winter (February-March). Plums fruit on 1-year-old shoots and older spurs. Training: - European plums: Central leader or modified central leader - Japanese plums: Open center/vase - American plums: Allow natural colony formation or prune to small tree

Remove dead, crossing, weak branches.Thin crowded growth. Black knot pruning: inspect regularly, remove knots immediately (any season). Keep height manageable (10-15 ft) for harvest.

🏺 Heirloom Varieties (12+)

EUROPEAN PLUMS (Prunus domestica) - Self-fertile, cold hardy, late blooming

'Stanley' Plum

  • Source: Widely available (Stark Bro's, many nurseries)
  • Bloom time: Mid-season
  • Harvest: Late August to early September
  • Chill hours: 1,000+
  • Notes: 1926 New York release. MOST widely planted European plum. Blue-purple skin, yellow flesh. Freestone. Self-fertile. Excellent for fresh eating, canning, prunes. Cold hardy (Zone 5). Reliable producer. Industry standard.

'Italian Prune' Plum (Fellenberg)

  • Source: Many nurseries, Stark Bro's, Fedco
  • Bloom time: Mid-season
  • Harvest: Late August to September
  • Chill hours: 1,000+
  • Notes: Old European heirloom. Blue-purple skin, green-yellow flesh. Freestone. Self-fertile. Excellent for drying (prunes), baking, fresh eating. Very cold hardy (Zone 4). Late blooming reduces frost risk. Reliable.

'Damson' Plum

  • Source: Fedco Trees, One Green World, specialty nurseries
  • Bloom time: Mid to late season
  • Harvest: September
  • Chill hours: 1,000+
  • Notes: Ancient European variety (Roman era). Small blue-black fruit. Very tart—best for jams, jellies, preserves. Self-fertile. Extremely cold hardy (Zone 3). Disease resistant. Late blooming. Traditional English plum for preserves.

'Shropshire' Damson

  • Source: Specialty nurseries, Rare Fruit Exchange
  • Bloom time: Mid to late season
  • Harvest: September
  • Chill hours: 1,000+
  • Notes: English heirloom damson. Small fruit, exceptional flavor for preserves. Self-fertile. Very cold hardy. Traditional variety.

'Green Gage' Plum

  • Source: Fedco Trees, One Green World, specialty nurseries
  • Bloom time: Mid-season
  • Harvest: August
  • Chill hours: 1,000
  • Notes: 1700s European heirloom. Green to yellow skin. EXCEPTIONAL sweet flavor—best-tasting European plum. Semi-clingstone. Partially self-fertile (better with pollinator). Cold hardy (Zone 5). Disease susceptible but worth it for flavor.

'Jefferson' Plum

  • Source: Specialty nurseries, state extension programs
  • Bloom time: Mid-season
  • Harvest: Late August
  • Chill hours: 1,000+
  • Notes: 1950s release. Blue skin, yellow flesh. Freestone. Self-fertile. Good disease resistance. Cold hardy. Excellent fresh eating.

'Earli Rouge' Plum

  • Source: Specialty nurseries
  • Bloom time: Early mid-season
  • Harvest: Early August (early)
  • Chill hours: 800
  • Notes: Red skin, yellow flesh. Semi-freestone. Self-fertile. Early ripening extends season. Cold hardy.

JAPANESE PLUMS (Prunus salicina) - Mostly need pollinator, larger fruit

'Methley' Plum

  • Source: Stark Bro's, One Green World, many nurseries
  • Bloom time: Early (HIGH frost risk)
  • Harvest: Early to mid-July (early)
  • Chill hours: 400-500 (low chill)
  • Notes: SELF-FERTILE (rare for Japanese). Red-purple skin, red flesh. Sweet, juicy. Early ripening. Cold hardy (Zone 5). Good pollinator for other Japanese plums. May bloom too early for Zone 6.

'Santa Rosa' Plum

  • Source: Widely available (Stark Bro's, many nurseries)
  • Bloom time: Mid-season
  • Harvest: Late July to August
  • Chill hours: 500
  • Notes: 1907 Luther Burbank introduction. Red skin, yellow flesh. Rich, sweet-tart. Partially self-fertile. Cold hardy to Zone 5. Popular commercial variety.

'Ozark Premier' Plum

  • Source: Stark Bro's, University of Arkansas program
  • Bloom time: Mid-season
  • Harvest: Late July to early August
  • Chill hours: 650
  • Notes: 1983 Arkansas release. Large red fruit, yellow flesh. Sweet flavor. Self-fertile. Good disease resistance. Cold hardy. Reliable for Zone 6.

'Superior' Plum

  • Source: Fedco Trees, specialty nurseries
  • Bloom time: Mid-season
  • Harvest: August
  • Chill hours: 1,000+
  • Notes: Minnesota release. Red skin, yellow flesh. Sweet. SELF-FERTILE. Very cold hardy (Zone 3). Late blooming. Good for northern climates.

AMERICAN NATIVE PLUMS (Prunus americana, P. angustifolia, hybrids)

American Plum (Prunus americana)

  • Source: Native plant nurseries, Izaak Walton League, conservation districts
  • Bloom time: Very early (March-April, before leaves)
  • Harvest: August to September
  • Chill hours: 1,200+
  • Notes: TRUE NATIVE to WV/Eastern US. White flowers cover tree in early spring. Small fruit (1 inch), yellow to red. Tart-sweet, good for preserves. Suckers freely, forms colonies. Self-incompatible (need multiple). Extremely cold hardy (Zone 3). Disease resistant. Best for wildlife, naturalizing. Collect local seed.

Chickasaw Plum (Prunus angustifolia)

  • Source: Native plant nurseries, specialty nurseries
  • Bloom time: Early spring
  • Harvest: July to August (earlier than American)
  • Chill hours: 800-1,000
  • Notes: Native to Southeast. Small fruit, red to yellow. Sweet-tart. Colony-forming. Cold hardy (Zone 4). Drought tolerant. Earlier ripening than American plum.

'Toka' Plum (American × Japanese hybrid)

  • Source: Stark Bro's, One Green World, Fedco
  • Bloom time: Mid-season
  • Harvest: August
  • Chill hours: 1,000+
  • Notes: 1910 South Dakota release. Red skin, yellow flesh. Sweet, aromatic. Self-fertile. Very cold hardy (Zone 3). Disease resistant. Excellent pollinator. Best of both worlds—hardiness + fruit quality.

'Underwood' Plum

  • Source: Specialty nurseries, state extension programs
  • Bloom time: Mid-season
  • Harvest: August
  • Chill hours: 1,000+
  • Notes: Minnesota release. Red skin, sweet flavor. Self-fertile. Very cold hardy (Zone 3). Good disease resistance.

📜 Cultural History & Domestication

Domesticated: - European plum (P. domestica): Hybrid of sloe (P. spinosa) and cherry plum (P. cerasifera). Domesticated in Caucasus/Central Asia ~2,000 years ago. Spread by Romans throughout Europe. - Japanese plum (P. salicina): Domesticated in China ~3,000 years ago (despite name). Introduced to Japan, then to West (Luther Burbank developed many varieties in California, 1870s-1920s). - American plum (P. americana): Never formally domesticated but extensively used by Native Americans and early settlers.

Archaeological Evidence: Plum stones found in Neolithic sites throughout Europe, Asia. American plum pollen abundant in pre-settlement sediment cores.

Historical Record: - Europe: Romans cultivated plums extensively. Prunes (dried plums) were preserved food. Monasteries maintained plum orchards. - Asia: Plums important in Chinese medicine, cuisine. Plum blossoms celebrated in art, poetry. - Native American Use: American plum was important food. Fruit eaten fresh, dried into cakes. Bark used medicinally. Wood used for tools. - Colonial America: European plums brought by settlers. American plums hybridized naturally. "Plum orchards" common in 1800s. - Luther Burbank: California horticulturist (1849-1926) developed 100+ plum varieties, many still grown ('Santa Rosa', 'Burbank', 'Shiro').

Cultural Significance: - China/Japan: Plum blossom is symbol of resilience (blooms in late winter, before leaves). One of "Four Gentlemen" in Chinese art. - Europe: Plum symbolizes moderation, humility. "Plumb" (from plum) means vertical/true. - Appalachian: American plum was common fence row tree. Preserves, jelly, wine traditional. Plum corners marked properties.

Modern Context: - European plums: Best for Zone 6—cold hardy, self-fertile, late blooming (avoids frost). - Japanese plums: Larger, showier fruit but more disease-prone, need pollinators. - American plums: Conservation value, wildlife, cold hardiness. Fruit smaller but flavorful.

🌾 Propagation

Seed: Plums do NOT grow true from seed. Seeds require 90-120 days cold stratification. Seedlings variable in quality, take 5-8 years to fruit. Useful for rootstock or breeding. Note: Plum pits contain amygdalin—do not eat kernels.

Grafting: Standard propagation. Whip-and-tongue in late winter (March). T-budding or chip budding in late summer (August). Grafted trees fruit in 3-5 years.

Root Cuttings: Plums can propagate from root cuttings. Dig root sections in late winter, plant horizontally.

Suckers: American plums sucker freely. Dig suckers with roots, transplant.

Special Notes: - Black knot requires vigilant monitoring - Plum curculio is major pest—plan control strategy - European plums easier than Japanese for Zone 6 - American plums best for wildlife, naturalizing

📖 Sources Consulted

  1. Stark Bro's Nursery (starkbros.com) - Plum varieties, culture guides
  2. Fedco Trees (fedcoseeds.com/trees) - Heirloom and cold-hardy plums
  3. One Green World (onegreenworld.com) - Plum selection, growing tips
  4. West Virginia University Extension - Home fruit production
  5. Byers, R.E. "Plum Production." Virginia Tech Extension, 2010s.
  6. North American Fruit Explorers (nafex.org) - Heirloom plum discussions
  7. USDA NRCS Plant Guide - Prunus americana
  8. Native American Ethnobotany Database (naeb.brit.org) - Traditional uses

Added to WV Planting Guide 26155 — The Loop Farmstead