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How to Grow Pawpaw

Asimina triloba

Perennial

Pawpaw is a hardy North American fruit tree producing tropical-flavoured fruit in UK gardens. Plant two trees for cross-pollination in rich, moist, slightly acidic soil. Young trees prefer light shade for the first year or two before gradually increasing sun exposure. Keep soil consistently moist and mulch thickly with compost or leaf mould. Prune minimally in late winter. Fruit ripens late and does not store well, so eat fresh.

Yearly Lifecycle

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JanFebMarAprMayJunJulAugSepOctNovDec
Bud Break Flowering Fruit Set Harvest Leaf Fall

Care Essentials

Spring with a balanced fertiliser. Mulch with compost.

Watch For

  • Generally pest-free
  • Pawpaw peduncle borer (rare)

Companions

Comfrey, Clover, Wildflowers

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Care Requirements

☀️ Light

Full sun for mature trees; shade young ones

Full sun for mature trees, though young pawpaws benefit from light shade for the first year or two. Gradually increase sun exposure as trees establish.

💧 Watering

Keep consistently moist; dislikes drought

Keep soil consistently moist, especially during fruit development. Pawpaw prefers rich, moist, slightly acidic soil and does not tolerate drought well.

🌱 Fertilizing

Balanced spring feed; generous compost mulch

Apply a balanced fertiliser in spring. Mulch generously with compost to maintain soil moisture and fertility. Pawpaw is a moderate feeder.

✂️ Pruning

Minimal; remove dead wood in late winter

Minimal pruning needed. Remove dead or crossing branches in late winter. Pawpaw naturally forms a pyramidal shape.

🍂 Mulching

Thick mulch to keep roots cool and moist

Mulch thickly with compost or leaf mould to keep roots cool and moist. Pawpaw is a woodland-edge tree and benefits from organic-rich soil.

Growing Tips

Pollination partner needed

Plant at least two trees for cross-pollination; pawpaw will not fruit reliably on its own.

Thick mulch matters

Mulch thickly with compost or leaf mould to keep roots cool and moist; pawpaw is a woodland-edge tree.

Shade when young

Shade young trees for the first year or two, then gradually increase sun exposure as they establish.

Harvest ripe, eat fast

Pick fruit when it gives slightly to pressure and the skin darkens; eat fresh as it does not store.

Pests & Diseases

Pest Pawpaw Peduncle Borer

Identification: Wilting or dropping flowers and small fruitlets. Tiny entry holes at the base of the flower stalk.

Organic treatment:
  • Remove and destroy affected flower stalks promptly
  • Encourage ground beetles and other predatory insects
Chemical treatment:
  • No chemical treatments are commonly recommended for this pest in the UK
Pest Japanese Beetle

Identification: Metallic green-bronze beetles feeding between leaf veins, leaving a lace-like skeleton.

Organic treatment:
  • Hand-pick beetles in the morning when they are sluggish
  • Use pheromone traps away from the tree to draw beetles off
Chemical treatment:
  • Not currently applicable in the UK
Pest Slugs and Snails

Identification: Irregular holes in young leaves and slime trails on foliage or around the base of the tree.

Organic treatment:
  • Use copper tape or barriers around young trees
  • Apply organic slug pellets (ferric phosphate)
  • Encourage hedgehogs, frogs, and ground beetles
Chemical treatment:
  • Ferric phosphate pellets (approved for organic use)
Disease Phytophthora Root Rot Phytophthora spp.

Symptoms: Yellowing leaves, wilting despite moist soil, dark discoloured roots, and eventual dieback.

Treatment: Remove and destroy badly affected plants. Improve drainage before replanting.

Prevention: Plant in well-drained soil. Avoid waterlogging. Do not overwater container-grown trees.

Disease Powdery Mildew Erysiphe spp.

Symptoms: White powdery coating on leaves, especially in late summer. Leaves may curl and drop prematurely.

Treatment: Remove badly affected leaves. Improve air circulation around the canopy.

Prevention: Avoid overhead watering. Space trees adequately. Prune for good airflow.

Spacing & Planting

Plant spacing 300 cm
Row spacing 450 cm
Mature height 500 cm
Mature spread 400 cm

Native North American fruit tree. Tropical-flavored fruit. Needs cross-pollination. Shade tolerant when young.

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