Chickasaw Plum

Chickasaw Plum is a straight native species with no cultivar breeding history. Humphry Marshall formally described Prunus angustifolia in 1785 in his Arbustum Americanum, the first major botanical survey of North American trees. The species epithet angustifolia refers to its characteristically slender, lanceolate leaves. Its pre-European distribution is debated; some historians believe the Chickasaw Nation and other Indigenous peoples spread it from its original core range in the mid-South across a wider arc, as the species is documented from New Jersey and Illinois south through Missouri, Nebraska, Florida, and Texas. The common name directly honors the Chickasaw people, whose homeland fell within the species’ center of range in the Mississippi Valley. Prunus angustifolia is a parent species behind several deliberate hybrid programs, most notably the Auburn University AU Rosa and Bruce Plum, where it contributed heat tolerance, disease resilience, and drought adaptation. Plants grown from seed vary in fruit size, flavor, and timing.

Chickasaw Plum's chill requirement of only 200 to 400 hours places it at the low-chill end of stone fruit, breaking dormancy earlier than most plums — an asset in southern climates and a minor frost-risk factor in northern parts of its zone 5 range. It tolerates sandy, loamy, and clay soils across a pH range of 5.5 to 7.0, which gives it flexibility that grafted Japanese and European plums lack. Drought tolerance is high once the root system establishes; the suckering root architecture allows the plant to tap moisture across a wide lateral area. Avoid low spots and compacted soil with poor drainage — waterlogged roots increase susceptibility to Verticillium wilt and root-related decline. Full sun maximizes fruit production, but the species performs adequately in part shade, making it useful for edge plantings along woodland margins. Fast growth means plants can reach fruiting size in 2 to 5 years from planting.

USDA Hardiness Zone: 5-9
AHS Heat Zone: 3-10
Chill Hours: 300-500
Sun Requirements: Full Sun to Partial Shade
Soil pH: 5.5-7.0
Soil Type: Sand, loam, clay; well-drained; adaptable to wide range of soil types
Soil Drainage: Well-drained
Water Requirements: Low to Medium; drought tolerant once established
Drought Tolerance: High
Plant Spacing: 15-30 ft apart

Chickasaw Plum grows as a multi-stemmed deciduous shrub or small tree, typically reaching 6 to 15 feet under cultivation, though wild specimens occasionally exceed 20 feet in favorable conditions. The growth habit is rounded and densely branched, with stiff, thorny stems that make mature thickets impenetrable to large animals — a useful trait for wildlife hedgerows and predator-exclusion plantings. The suckering root system spreads laterally, generating new stems from the perimeter and gradually expanding the planting footprint. Growers who want a contained specimen rather than a colony should remove suckers annually at ground level. Bright green foliage turns pale yellow in autumn. Flowers emerge in late February through early April before or concurrent with leaf emergence, creating a striking early-season display of small white blooms along bare branches. The thorny, dense form requires minimal structural pruning but benefits from occasional thinning to improve light penetration and airflow.

Mature Height: 4-20 ft tall
Mature Spread: 4-20 ft wide
Growth Habit: Multi-stemmed deciduous shrub or small tree; thicket-forming with suckering tendency; rounded crown
Growth Rate: Fast
Foliage Type: Deciduous
Food Forest Layer: Sub-canopy, Shrub
Leaf Color: Bright green
Fall Foliage Color: Pale yellow
Thorns?: Yes
Attracts Wildlife: Birds, Butterflies, Native Bees, Deer, Turkey, Quail, Small Mammals
Life Span: Perennial

Chickasaw Plum flowers in the early relative window in the Zone 7 Ozarks planning model. Assume cross-pollination is needed unless a named clone is documented otherwise; use a genetically distinct compatible Chickasaw/American-type plum.

Bloom Season: Early
Bloom Window: Mar 10-Mar 30
Pollination Requirements: Assume cross-pollination is needed unless a named clone is documented otherwise; use a genetically distinct compatible Chickasaw/American-type plum.
Pollination Mechanism: Insect (bee)
Flower Color: White

The fruit is small — typically 0.5 to 1 inch in diameter — with a flavor profile that runs tart to distinctly acidic when underripe, shifting toward sweet-tart when fully ripe and red. Skin shows a whitish bloom at peak ripeness. Some specimens ripen to yellow; both color forms occur in wild populations. The harvest window extends from late May through mid-July in temperate climates, with individual plants typically ripening over 2 to 3 weeks. Fresh fruit can be eaten off the plant when fully ripe, but the tartness and small pit-to-flesh ratio make it better suited to processed uses: jelly and jam production are the most common applications, and the high pectin content of the skin produces reliable gels. The fruit is also used for preserves, wine, and dried preparations. Flavor intensifies with heat and sugar. Pits and seeds contain cyanogenic glycosides and should never be crushed or chewed.

Ripening Season: Very Early
Harvest Window: Late May - Mid Jul
Fruit Size: 0.5-1 inch
Flavor: Tart to sweet when fully ripe; acidic when underripe
Fruit Color: Red ripening to yellow (or remaining red); small whitish bloom on skin when fully ripe
Bearing Habit: Annual bearer; flowers and fruits reliably each year
Years to Bear: 2-5 years
Culinary Uses: Fresh eating, jelly, jam, preserves, wine, dried fruit; tart flavor improves with cooking and sugar

Chickasaw Plum carries moderate susceptibility across all five tracked disease categories, reflecting its status as a wild species rather than a disease-selected cultivar. Brown rot (Monilinia fructicola) is the primary concern during wet harvest seasons; remove mummified fruit after harvest and avoid overhead irrigation during ripening. Black knot (Apiosporina morbosa) causes gall-like swellings on stems — prune out infected wood at least 4 inches below visible galling during dormancy and destroy cuttings, never compost them. Plum leaf spot (Coccomyces prunophorae) defoliates susceptible plants in humid summers; improve airflow through thinning and space plantings at least 15 feet apart. Bacterial canker (Pseudomonas syringae) enters through pruning wounds; prune during dry weather and disinfect tools between cuts. Verticillium wilt (Verticillium dahliae) is the most serious disease risk — the species is susceptible, and there is no cure once systemic; avoid planting in soil where tomatoes, potatoes, or strawberries were grown in the past 4 years. For pests, plum curculio (Conotrachelus nenuphar) can be managed by spreading a tarp and jarring branches to dislodge adults at petal fall; eastern tent caterpillar (Malacosoma americanum) egg masses are removable by hand in late winter before hatch; American plum borer (Euzophera semifuneralis) and scale insects (Lecanium spp.) are best suppressed through horticultural oil applications during dormancy.

Brown Rot: Moderately Susceptible
Black Knot: Moderately Susceptible
Plum Leaf Spot: Moderately Susceptible
Bacterial Canker: Moderately Susceptible
Verticillium Wilt: Susceptible
Plum Curculio: Moderately Susceptible
Eastern Tent Caterpillar: Moderately Susceptible
American Plum Borer: Moderately Susceptible
Scale Insects: Moderately Susceptible

• Manage suckering actively: Remove suckers annually at the root origin if you want a contained specimen; leave them if you intend a wildlife thicket or erosion-control hedge.
• Verticillium avoidance: Site this plum away from ground where solanaceous crops or strawberries have grown recently — Verticillium wilt persists in soil for years and this species is susceptible.
• Brown rot sanitation: Harvest ripe fruit promptly and remove any mummies from the tree and ground after season; leaving infected fruit carries the pathogen into the following year.
• Black knot pruning timing: Prune out knot-infected wood during dormancy in late winter, cutting well below visible infection and burning or bagging removed material — not composting.
• Cross-pollination for yield: Plant two or more individuals within 30 feet of each other; fruit set in a colony planting consistently exceeds that of an isolated specimen.

Our 365-Day Plant Guarantee: We ensure that our plants are delivered to you alive and healthy. If your plant does not survive its first year, you're eligible for store credit under these conditions:

1. Your location falls within the appropriate USDA hardiness zone for the plant variety (refer to our hardiness zone map).
2. You maintain the roots' moisture and plant within three days of delivery, following the instructions in our Planting Guide.

If you're concerned about your plant's health, please consult our guide, How to Tell if Your Tree is Dead or Dormant. Remember, our plants are shipped in a dormant state and may leaf out at different times based on their species. To check for plant vital