Pumpkin Growing Guide

Tasty, sweet and versatile, pumpkins (or otherwise known as squash) are a crop the whole family can enjoy growing. Pumpkins are happy trailing along the ground. Pumpkin vines can also be trained up a strong fence, tree or trellis to save on space. Pumpkins are easy to grow and will provide even gardening novices with hassle-free success.


If left to their own devices pumpkins will happily scramble almost anywhere, and sometime even sprout up by themselves in the compost heap. Choose a sunny position to plant your pumpkins. If space is an issue, you can grow pumpkins in containers. Choose a smaller-grown variety and a large container and place it in a sunny position.

Pumpkins need a long growing season of approximately four to six months depending on where you live. Plant out as soon as frosts are over and keep well-watered while plant is establishing itself.

Refer to our Planting Calendar.


Like building a house a good foundation is the key to success in your garden. The better the soil, the better your plants will grow. If you are starting with an existing garden bed dig in organic matter like Tui Sheep Pellets and Tui Compost to your soil. Then you can add a layer of Tui Vegetable Mix. If planting in containers, fill with Tui Vegetable Mix.
The best times to plant are early in the morning or late in the day, so the plants aren’t exposed to the hot sun straight away. Always water plants well before and after planting.

Pinch out the main stems once growth starts; this will encourage more lateral stems and give you a heavier crop of fruit. To encourage large pumpkins, allow only two to three to develop on each plant.

Planting in garden beds

• Water plants thoroughly before planting and allow to drain.
• Dig a hole, approximately twice the depth and width of the root ball of your plant.
• Partly fill the hole with Tui Vegetable Mix.
• Gently loosen the root ball of your plant and position the plant in the centre of the hole.
• Fill in with Tui Vegetable Mix.
• Press soil gently around the base of the plant.
• Water your plant well.

Planting in containers

• Water plants thoroughly before potting and allow to drain.
• Partly fill your container with Tui Vegetable Mix.
• Gently loosen the root ball of your plant and position the plant in the container.
• Fill your container with Tui Vegetable Mix up to 3cm from the top.
• Tap the container gently on the ground to settle the mix.
• Press soil gently around the base of the plant.
• Water your plant well.


Feed your plants and they will feed you. Plants use nutrients from the soil as they grow, so replenishing the nutrients ensures your plants grow to their full potential. Select a fertiliser specially blended for your crop like Tui Vegetable Food. Feed pumpkins planted in containers with Tui NovaTec Premium fertiliser. Well watered, well nourished pumpkins will have a better chance of keeping insect pests and diseases at bay.

While your pumpkins are growing regularly apply a dose of Tui Organic Seaweed Plant Tonic to give them a welcome boost.

Protect your plants from the elements with layers of Tui Pea Straw Mulch, to help keep their roots moist and keep your garden weed free.

Be vigilant and stop unwanted insects and diseases from ruining your plants. Slugs and snails can be an issue - lay Tui Quash slug and snail control around young plants.