Ruqayyah Snyder
Pawpaw, or papaya, is a sweet-smelling and delicious fruit that can be eaten fresh or grated into a salad. In Australia, pawpaw trees thrive in tropical and subtropical zones but can also grow in warm-temperate frost-free areas. They can grow quite tall, affecting fruit harvesting, so pruning is recommended. To grow pawpaw from seeds, you need to obtain seeds from a female tree. The seeds can be dried or used fresh, soaked in water for 24-36 hours, and then planted no deeper than 10mm. It is best to plant them where they will remain, in a spot with full sun and well-drained soil.
| Characteristics | Values |
|---|---|
| Soil | Well-drained, enriched with organic matter and fertiliser |
| Sunlight | Full sun |
| Seed preparation | Soak seeds in water for 24-36 hours, changing water as it discolours |
| Planting | Sprinkle seeds and lightly cover with soil, no deeper than 10mm |
| Watering | Regularly, but avoid overwatering; damp, not wet |
| Fertiliser | Complete fertiliser in spring and autumn; monthly feeding of lime, potassium, and sulphate of potash |
| Pruning | Best done in autumn, after fruiting; helps maintain height and encourages new shoots |
| Ripening | 150-164 days, or longer in subtropical areas; skin changes from green to yellow/orange |
| Common issues | Fruit rot caused by fungus, powdery mildew |
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What You'll Learn
Preparing the soil and planting
Pawpaw trees thrive in tropical and subtropical zones but will also grow in warm-temperate frost-free areas. They can grow quite tall—between 2 and 5 metres—so make sure you give them plenty of room to grow.
When preparing the soil and planting, choose a spot in full sun with well-drained soil. Enrich the soil with organic matter and fertiliser, such as Yates Dynamic Lifter Soil Improver & Plant Fertiliser. If the soil is clay-based, add gypsum and fork it in well. Mound the soil to improve drainage if necessary.
Before planting, sterilise your pots with a 3:1 water-chlorine solution. Soak the seeds in water for 24-36 hours, changing the water as it discolours, before planting them no deeper than 10mm. This soaking allows faster germination, replacing the moisture removed in the drying process.
Sprinkle the seeds over the top of the soil and lightly cover them with soil. Water them well and lightly mulch. You cannot tell whether the seeds are male or female, so it's ideal to plant 4-5 plants to ensure you have at least one male tree for pollination. Water regularly as the seedlings grow.
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Germination and seedling care
To germinate pawpaw seeds, some sources suggest drying them out first, while others indicate that they can be used fresh. Before planting, soak the seeds in water for 24-36 hours, changing the water as it discolours. The soaking allows for faster germination, replacing the moisture removed in the drying process.
When planting, choose a spot in full sun with well-drained soil. If the soil is clay-based, add gypsum and fork it in well. Mound the soil to improve drainage if necessary. Dig the planting hole twice as wide as and to the same depth as the root ball. Sprinkle the seeds over the top and lightly cover with soil. Water them well and lightly mulch.
Pawpaw seeds cannot be identified as male or female, so it is ideal to plant 4-5 plants to ensure you have at least one male tree for pollination. Water the seedlings regularly as they grow. The biggest danger to seedlings is being too wet; wet conditions encourage Pythium and Phytophthora, so seedlings should be damp, not wet. One watering a day in the morning is usually sufficient. If you are growing only a small number of seedlings, hand watering is the best method.
Once the seedlings start flowering, take note of the flower shapes. Keep one male plant (the flowers are borne on long, thin stalks) and discard the rest. For the best results, it is recommended to have one male and two female trees so that you can hand-pollinate.
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Sexing the flowers
Pawpaw flowers are either male or female, and you need both to produce fruit. The male flowers have a prominent central stalk with a small number of petals, while the female flowers have a more prominent central tube with a three-part stigma at the end. The male flowers appear first, and the female flowers follow. The male flowers are borne on long, thin stalks, while the female flowers are borne on shorter, thicker stalks. The male flowers are usually produced on the previous season's growth, while female flowers are produced on the current season's growth. The male flowers are typically larger than the female flowers. They also have a more prominent central column, which is the part that produces the pollen. The female flowers have a more swollen base, which is the ovary, and a You may want to see also The best time to prune your pawpaw tree is during its annual dormancy in late winter or early spring. You should also consider pruning in autumn, once the tree has finished fruiting. Pruning is not always necessary, but it can be useful for a variety of reasons. Firstly, it can be done to shape the tree and remove any unwanted or problematic branches. Dead, diseased, or broken branches should be removed to avoid pest or disease issues and to prevent injury to the bark of the trunk. Crossing branches can also be problematic as they may rub against each other. Secondly, pruning can stimulate new growth on older trees and increase fruit production. To achieve this, remove older, less productive branches. You may also want to prune your tree to a reasonable height to make harvesting the fruit easier. To prune your pawpaw tree, use sharp pruners or a small saw. Identify all problem branches and remove them one by one, moving from the lowest branch to the next lowest until you achieve the desired access and shape. You can also cut back some of the less vigorous leaders to give the tree a stronger structure. Check the strength of the crotches where the branches attach to the trunk, and consider cutting back branches if the crotches are weak or have narrow angles. If you see tree suckers growing close to the tree, remove them by pulling them up by hand. You may want to see also You may want to see also You can grow a pawpaw tree from seeds from the fruit of female trees. Choose a spot in full sun and enrich the soil with organic matter. Sprinkle the seeds over the top and lightly cover with soil. Water regularly as the seedlings grow. You cannot tell whether the seeds are male or female, so it's a good idea to plant 4-5 plants to increase the odds of having at least one male tree for pollination. Once they start flowering, take note of the flower shapes. The male flowers are borne on long, thin stalks, while the female flowers are short and round. It can take a couple of weeks to a couple of months for pawpaw seeds to sprout. Soaking the seeds in water for 24-36 hours before planting can help speed up germination. Pawpaw trees can grow quite tall, so pruning is recommended to keep them at a manageable height. The best time to prune is in autumn, after the tree has finished fruiting. Pawpaw trees also need regular feeding with lime, potassium, and nitrogen to stay healthy and produce sweet fruit.Applying for Nursing Jobs in Australia: A Step-by-Step Guide
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Pruning and maintenance
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Common issues and solutions
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