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Growing Pumpkin in Victoria

Introducing Pumpkin

This warm season crop needs plenty of space, but grows vigorously with few problems. Plant pumpkins in a sunny spot with rich soil and they’ll reward you with an abundant harvest. Pumpkins come in a wide range of shapes, colours and sizes. If your growing space is limited, then the miniature varieties are a better choice. They take up less space and are ready to harvest sooner than traditional pumpkins.

Classic Mistakes

Make sure your pumpkins get enough sun and enough space to grow. Powdery mildew is usually a problem with pumpkins, so take care to keep the leaves as dry as possible when watering.

Sunlight

Grow in: Full Sun

Soil Preparation

Pumpkins like a rich soil. Work in plenty of compost and well-rotted manure.

Sowing Seed

Sow seed: September-December
Sowing depth: 10mm

Pumpkin seeds need warmth to germinate, so its best to wait until the weather is properly warm to plant them.

Sow your seeds into mounds about 1 m apart. Once the plants are up and established, choose the strongest 2 plants and remove the rest. Pumpkins are best planted from seed, because they don’t like to have their roots disturbed.

Planting

Avoid planting seedlings.

Pumpkins don’t like to have their roots disturbed, so they’re best planted from seed, directly into the spot where they will grow. If you do want to plant seedlings, then take extra care with them so as not to disturb their roots when you plant them out. Add a small amount of bonemeal to each hole before planting to help the roots establish and grow strong to support a healthy plant. Keep the seedlings well-watered for the first few days while the plants are settling in.

Care

Once your vines reach the desired length, pinch out the growing tips to prevent them from growing longer. This will encourage them to branch out. Once you have a good number of fruit on your vine, you can start to also pinch out any new side shoots. This will encourage the plant to put more energy into growing the fruit and less into expanding.

Watering

Pumpkins like moist soil. Water them often in the hot, dry summer months. Its best to try not to get their leaves wet, as they are prone to fungal diseases. If you must wet the leaves, water them in the morning so that the leaves can dry off quickly during the warmth of the day.

Feeding

Pumpkins are heavy feeders and benefit from regular feeding. Feed with a balanced organic fertiliser every 4-6 weeks through the growing season.

Mulching

Mulching helps to keep the soil moist and cool. Apply a generous layer of organic mulch such as lucerne, sugarcane or peastraw. Since pumpkins are such heavy feeders, a compost mulch is also a good option.

Harvesting

Harvest: 15 to 20 Weeks After Planting

Pumpkins can be harvested once their skins have hardened and thickened. Pick mature fruit as you need them. Use a sharp knife to cut them away from the vine. Be sure to leave a piece of stem attached to each pumpkin. If you want to store your pumpkins, only harvest them at the end of summer so that their skins can become hard and thick. Pumpkins need to be cured before storing, but remember to get them indoors before the first frosts!

What to Plant Now

What to do about Snails and slugs?

Lay down grit, like eggshells or silica sand or create barriers around your plants. Remove any slugs or snails that you see.

What to do about Powdery Mildew?

Milk spray or baking soda solution work well and can be sprayed on affected plants.
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