Growing Brussels sprouts: Part 2

Irrigation, fertilization, and weed control all play a crucial role in the success of this crop. It’s also important to harvest at the right time when the heads are bright green, firm, and large enough.

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To grow vigorously, Brussels sprouts require soil that is high in organic matter and holds water well. The crop also needs plenty of nitrogen, but how much and how often you should apply it will depend on the variety of Brussels sprouts you are growing.

In general, you should apply one side dressing at some point, such as when the plants are 30cm tall three to four weeks after planting or when they are half-grown.

IRRIGATION

After you have transplanted the Brussels sprouts, irrigate the land using overhead sprinklers. This type of irrigation can incorporate pre-plant herbicide and fertilizer (fertigation) and will stabilize the planting beds until the root systems become established.

Continue irrigating at weekly intervals in sandy soil, or at two- to three-week intervals in heavier soil. The crop requires large volumes of water, especially in the heat of summer.