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Growing Zucchini in The Northern Territory

Introducing Zucchini

A quick and easy-to-grow little squash. Zucchinis love the warm Top End climate. If they’re happy, they’ll produce an abundance of versatile veggies for the kitchen. Pick them small or let them grow big and stuff them with mincemeat.

Classic Mistakes

Water your zucchinis regularly. Infrequent watering stresses the plants and causes all sorts of problems.


Grow in: Full Sun

Zucchinis need a good amount of sun, but like most veggies, will be happy with some afternoon shade.

Soil Preparation

Zucchinis love rich, moist soil. Dig plenty of compost and well-rotted manure into your soil.

Sowing Seed

Sow seed: April-August
Sowing depth: 20 mm

Zucchinis grown during the dry season tend to bear fruit of a higher quality than those grown during the wet season.

Zucchinis can be planted as seedlings, but are best planted from seed. Keep them moist until they are established and follow the spacing suggestions on the seed packaging. Zucchini plants can grow quite big and need a fair amount of space.


Plant seedlings: April-August

Zucchinis grown during the dry season tend to bear fruit of a higher quality than those grown during the wet season.

Handle your seedlings gently, taking care not to damage their delicate roots. Place a small amount of bonemeal into each hole before planting. It’ll help your seedling to develop strong root systems which leads to healthy, vigorous plant. Water them well and don’t let the soil dry out while they’re settling in.


If your fruits start to shrink and rot while they’re still small, its probably because they haven’t been properly pollinated. Luckily this problem is easily solved through hand pollination.

As the plant grows, remove any older leaves that are diseased, damaged or yellowing. This will help the plant to direct more energy towards new growth and fruit, instead or supporting old, damaged leaves.


Zucchini love water. Be sure to keep the soil moist, and, if possible, do not water their leaves. They’re particularly prone to fungal diseases (like powdery mildew) so if you must water the leaves, do so in the morning, so that the plants can dry during the heat of the day.


Feed your zucchinis every 4 weeks, with a balanced organic fertilizer or some compost tea.


Mulch your zucchinis with a good, thick layer of organic mulch to keep the soil moist and the weeds out.


Harvest: 6 to 9 Weeks After Planting

When the zucchinis reach the desired size, use a sharp knife to cut them away from the vine. Picking the zucchinis will encourage the plant to keep producing fruit. Zucchinis can be left on the vine and grow bigger rapidly, but the bigger they are, the more watery and less flavourful they become.

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