How to grow a pawpaw from seed
Growing a pawpaw from seed is cheap and genuinely rewarding, with two rules that make or break it: the seed must never dry out, and it needs a long cold, moist spell before it will sprout. Get those right and the rest is patience.
Why pawpaw seed is different
Pawpaw seed is recalcitrant, which means it dies if it dries out, so you cannot treat it like a packet of dried garden seed left on a shelf. It is also dormant when fresh and needs a stretch of cold, moist conditions, the kind a seed would get lying under leaf litter through winter, before it will germinate. Skip either point and nothing comes up. Handle it right and germination is reliable.
Step by step
- Clean the seed from ripe fruit. Take seeds from fully ripe pawpaws and rinse the pulp off. Do not let the seeds dry out at any point, drying kills them.
- Cold-stratify for 90 to 120 days. Seal the moist seeds in a bag with damp sphagnum or sand and refrigerate at about 32 to 40 F for 90 to 120 days. This cold, moist period is required before the seed will germinate.
- Plant in a deep container. After stratifying, plant each seed about an inch deep in a tall, deep pot. Pawpaws send down a long taproot early, so depth matters more than width.
- Keep warm and wait. Give them warmth and consistent moisture. The root emerges first and the shoot can take until midsummer to appear, so do not give up on a pot that looks empty.
- Shade the seedlings the first year. Young pawpaws are shade plants at first and can scorch in full sun. Grow them in part shade for the first summer or two before moving them to a sunnier spot.
- Plant two for fruit. Seedlings take roughly 5 to 8 years to fruit and each is genetically unique, which is good: you need two different trees to cross-pollinate and set fruit.
What to expect
Pawpaws are slow and back-to-front compared with most seedlings. The taproot emerges first and grows down well before any shoot appears above the soil, so a pot that looks empty in late spring may still be very much alive. Give it warmth, steady moisture, and time into midsummer before writing it off. Once the shoot is up, shade it for the first season or two, then move it toward full sun.
From there it is the long game covered in the pawpaw tree guide: roughly 5 to 8 years to fruit, and always two different trees for pollination. If that wait sounds long, grafted named varieties shorten it considerably.
Common questions
Can you plant a pawpaw seed straight from the fruit?
You can plant it, but it will not sprout until it has been through a long cold, moist period. Fresh seed planted outdoors in fall will stratify naturally over winter and come up the next summer. Seed kept indoors needs about 90 to 120 days in the refrigerator first.
Why is my pawpaw seed not germinating?
Two common reasons: the seed dried out at some point, which is usually fatal, or it has not had a long enough cold-moist stratification. Pawpaw seed is slow even when everything is right, sending down a root before any shoot appears, so an empty-looking pot in spring may still sprout by midsummer.
How long does a pawpaw take to fruit from seed?
About 5 to 8 years. If you want fruit sooner, start with a grafted named variety, which can bear in 3 to 4 years. Either way you need two genetically different trees.
Should I grow from seed or buy a grafted tree?
Seed is cheap and the seedlings are all unique, which is fine if you have patience and room to grow several and keep the best. A grafted named variety costs more but gives known fruit quality and earlier bearing. Many growers do both.
Seed-starting supplies
The taproot decides everything about starting pawpaws in containers: a deep air-pruning pot, a pinch of mycorrhizal inoculant at planting, and 50 percent shade for the first summers.
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Tall tree pots
Mycorrhizal inoculant
Keep going
- How to graft a pawpaw (turn a seedling into a named variety)
- The pawpaw tree: how big, how fast, how to grow one
- Can I grow a pawpaw where I live?
- Named pawpaw varieties
Grounded in seed-handling and propagation guidance from the Kentucky State University Pawpaw Program. Stratification times are typical ranges; local conditions vary.
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