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fruit · Annonaceae
Updated Apr 2026

Pawpaw

Asimina triloba

North America's largest native fruit — a custard-textured tropical in a temperate body.

Pawpaw

A pawpaw is a fruit tree that evolved in the shade of larger trees, and it remembers. For the first two years after planting, a young pawpaw needs shelter from full sun — the leaves scorch and the growth stalls if you plant it in an open field. A fifty percent shade cloth or the dappled light under a mature canopy is what it expects. By year three, the tree can handle full sun and typically prefers it, but those first two seasons matter.

Pollination is where most pawpaw plantings fail. The flowers are small, dark maroon, and they smell faintly of rotting meat — an adaptation for fly and beetle pollinators, not bees. In a forest understory with abundant flies, this works. In a suburban backyard, it often does not. Some growers hang chunks of rotting meat near the flowers to attract pollinators; others hand-pollinate with a small brush, transferring pollen from one tree to another on consecutive days when the flowers are receptive. You need at least two genetically distinct trees — two seedlings from different sources, or two different named varieties — for cross-pollination. Two trees propagated from the same parent will not pollinate each other.

The wait is long. A grafted tree on a vigorous rootstock may fruit in five years; a seedling-grown tree often takes seven. This is not a planting for someone who expects results the following summer. The tree grows slowly at first, and the root system — a deep taproot with few lateral roots — makes difficult after the first year. Plant young and plant where you intend to leave it.

When fruit does come, it is genuinely unlike anything else that grows in a temperate climate. The flavor is tropical — a cross between banana, mango, and custard — and the texture is soft, almost pudding-like when fully ripe. The catch is shelf life: a ripe pawpaw lasts two to three days at room temperature before it ferments. This is why you will never see them in a grocery store, and why the only way most people taste a pawpaw is to grow one or know someone who does.

Harvest timing is specific. The fruit ripens in late August through October, and a ripe pawpaw will yield slightly to pressure, like a ripe avocado. If you pick too early, the fruit will never ripen properly; if you wait too long, it will drop and bruise. Check daily once the fruit starts to soften, and handle gently — the skin is and the flesh bruises at a touch. Refrigeration can extend shelf life to about a week, but the flavor is best at room temperature.

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Varieties worth knowing

Shenandoah
Large fruit with rich, sweet flavor. Tends to be among the most productive named varieties.
Susquehanna
Very large fruit, mild flavor. One of the most cold-hardy named selections.
Allegheny
Consistent cropper with balanced sweet-tart flavor. Slightly smaller fruit than Shenandoah.
Mango
Named for its tropical mango-like flavor. Medium-sized fruit, early ripening.
Prima
One of the earliest releases from KSU breeding program. Good flavor, reliable production.
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What can go wrong

Sunscald on young trees
Leaves turn brown and crispy in the first two years if exposed to full sun. Provide fifty percent shade cloth or plant under dappled canopy until the tree is established.
No fruit despite flowering
Almost always a pollination failure. Two genetically distinct trees are required, and flies or beetles must transfer pollen between them. Hand-pollinate with a brush if natural pollinators are scarce.
Root disturbance during transplant
Pawpaws have a deep taproot and resent being moved. Plant young trees (one to two years old) and avoid disturbing the root ball.
Fruit drops before ripening
Can be caused by drought stress, poor pollination, or overcropping. Water consistently during fruit development and thin clusters if the tree sets heavily.
Zebra swallowtail caterpillars
The larvae feed on pawpaw leaves. They are the only host plant for this butterfly species, so most growers tolerate the minor damage.
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Companions

Plant with
comfreyspicebushelderberryclover
Keep apart
walnutgrass turf
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How to propagate

Pawpaw is most commonly grown from seed, which requires cold stratification and produces slow-growing seedlings. Grafting is used to reproduce named cultivars and bring trees into bearing earlier, but it requires some skill due to pawpaw's sensitive root system.

From seed
moderate70-80% germination with proper stratification success rate
Collect seeds from ripe fruit in fall (September-October); stratify over winter for spring planting
Remove seeds from fully ripe fruit, wash off pulp, and do not let seeds dry out — pawpaw seeds lose viability quickly if dried. Place in damp sphagnum moss or sand and cold-stratify at 32-40°F for 90-120 days. Sow stratified seeds 1 inch deep in tall, deep pots (pawpaw develops a long taproot) in spring. Seedlings emerge slowly and need shade for the first 1-2 years. Expect 3-7 years to first fruit from seed.
Grafting
difficult50-70% success rate
Late spring (April-May) when rootstock is actively growing and bark slips easily
Use chip budding or whip-and-tongue grafting onto 1-2 year old pawpaw seedling rootstock. Collect scionwood while dormant and refrigerate. Graft when rootstock is actively growing for best cambium contact. Wrap the union firmly with grafting rubber or parafilm. Pawpaw grafts heal slowly and require patience — protect from wind and sun. Success improves with practice; beginners should expect some failures.

Harvest & keep

Expected yield
Per plant
15–40 lb per mature tree (years 5+)
Peak window
3 weeks

Need 2 trees for cross-pollination. Native North American fruit with tropical flavor.

Keep the harvest
Refrigerator
2–3 days ripe; 1 week firm
Freeze
scoop out flesh and freeze in cups — the classic preservation
Can
not common — high pH requires pressure canning
Dry
not recommended — flavor doesn't survive

Extremely perishable — eat within days of ripening. Skin and seeds contain toxins; eat flesh only.

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How it grows where you live

Pacific Northwest
Pawpaws are not native to the Pacific Northwest and can struggle with the region's cool summers and lack of heat accumulation, especially west of the Cascades. They may survive but are unlikely to fruit reliably without a very warm microclimate.
Mountain West
High-elevation and arid climates tend to be outside the pawpaw's native range and tolerance. They need consistent soil moisture and may struggle at elevations above 6,000 feet or in areas with low humidity.
Southwest
The hot, dry Southwest is not suitable for pawpaws, which evolved in moist forest understories. The combination of low humidity, alkaline soils, and intense sun tends to stress the trees beyond recovery.
Midwest
Pawpaws are native across much of the Midwest and generally thrive in the region's climate. The main limitation is pollination; flies and beetles may be less abundant in open suburban yards than in forest edges, making hand-pollination a common practice.
Northeast
Pawpaws are native to parts of the Northeast and typically perform well in zones 5–7. The main challenge is attracting adequate pollinators in suburban settings; hand-pollination tends to increase fruit set substantially in home gardens.
Southeast
The warm, humid summers of the Southeast suit pawpaws well, and they are native to much of the region. Trees may fruit slightly earlier (year 4–6) than in cooler climates, and the longer growing season tends to produce larger fruit.
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Sources

Native range: Eastern North America (forest understory from Ontario to Florida)
A general reference — results depend on your soil, weather, and season.