Growing Broccoli in Queensland
Broccoli is a cool season crop. It loves the cooler winter weather and is fairly easy to grow. 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
Don’t plant your broccoli too late. You want to make the most of the temperate autumn and spring weather. Once the weather gets too warm, your broccoli will feel stressed and may bolt to seed or only produce small heads.
Broccoli is a heavy feeder, so make sure to prepare your soil with compost and well-rotted manure.
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.
Don't let the soil dry out. Broccoli loves water, so it you'll probably need to water quite often during the dry autumn and winter months.
Feed regularly with compost tea, fish emulsion or organic fertilizer.
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 straw or chopped leaves will help keep your broccoli growing happily.
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. The cold in some areas causes growth to slow, so it can sometimes be up to 20 weeks before they are ready for harvest.
If you see the eggs or caterpillars appear on the plants, remove them by hand. Spraying with soap spray will also be helpful.
Spray with soap spray weekly until the problem is under control.
What to do about White butterfly?
What to do about Aphids?