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Growing Broccoli in New South Wales

Introducing Broccoli

Broccoli is a cool season crop. It loves the cooler winter weather. Broccoli is fairly easy to grow and with the right care, you can expect a bountiful harvest. Seeds should be planted in late summer to make the most of the cool growing season

Classic Mistakes

Don’t plant your broccoli too late. You want to make the most of the temperate autumn and spring weather. Once the weather gets to warm, your broccoli will feel stressed and may bolt to seed or only produce small heads.


Grow in: Full Sun

Soil Preparation

Broccoli is a heavy feeder, so make sure to prepare your soil with compost and well-rotted manure. Broccoli likes a neutral soil, so if your soil is acidic, add some lime before planting. Where possible, try to let your soil rest for about a week before you plant into it.

Sowing Seed

Sow seed: All of February
Sowing depth: 10 mm

Sow seeds in mid to late summer, so that they are ready to plant into the garden as soon as the weather cools.

Broccoli seeds are most often started in trays or pots and then transplanted into the garden once the weather cools. Cover the seeds lightly with soil and keep them moist while they germinate. Make sure they get enough light and transplant them as soon as they are big enough to handle. Broccoli become leggy quite easily if they are kept in trays for too long.


Plant seedlings: April-May

Try to plant bought seedlings as soon as possible after you get them home and remember to give them a good, deep watering to help them settle in. The trick here is to get them in when it’s not too hot or too cold. When you plant your seedlings out, add a small amount organic bone-meal to each hole. Bone-meal gives seedlings a great start and helps them to develop strong root systems to support a healthy plant.

If your seedlings have grown too long and become leggy; plant them slightly deeper that they were in the pots. This should give you sturdier plants with tighter heads.


Don't let the soil dry out. Broccoli loves water, so it thrives in the wet autumn and winter weather in New South Wales. The rain should do most of the work for you, but if the ground seems dry, be sure to give your broccoli some extra water.


Feed regularly with compost tea, fish emulsion or organic fertilizer. Broccoli is a heavy feeder and rainy weather can wash the nutrients out of the soil quickly.


Mulching helps keep the soil nice and cool on warm days and keeps it warm if there’s a sudden cold spell in winter. A good layer of organic mulch like lucerne or sugarcane will help keep your broccoli growing happily. Remember to top up your mulch as it breaks down throughout the season.


Harvest: 12 to 16 Weeks After Planting

The broccoli is ready to harvest once it forms firm heads. You need to pick it just before the flowers start to open. Cut off the head with a sharp knife. Some varieties form side shoots once the main head is removed. So, leave them in to harvest the smaller side shoots.

What to Plant Now

What to do about White butterfly?

If you see the eggs or caterpillars appear on the plants, remove them by hand. Spraying with horticultural soap will also be helpful.

What to do about Aphids?

Spray with soap spray weekly until the problem is under control. It may be necessary to reapply more often during particularly rainy weather.
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