7 Tips for Growing Outstanding Broccoli

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Broccoli

From its humble beginnings in Italy six centuries ago, broccoli has emerged as the second most popular vegetable (after potatoes) in both America and Great Britain. Per capita consumption is above 6 pounds (2.7kg) annually, which is a lot of broccoli! Of course you will want to grow broccoli in your organic garden, because freshly harvested broccoli is remarkably tender, and loaded with vitamins A, K, and iron. Here are my top tips for gardening success growing broccoli.

1. Try Different Types of Broccoli

Choose sprouting broccoli or long-stemmed ‘DeCicco’ for fresh eating, along with a few big-headed hybrids for the freezer. In most climates, you can grow broccoli in spring for summer harvest, and start more seeds in July for a second crop in the autumn.

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Provide young broccoli seedlings with plenty of root space

2. Reduce Stressors

The best broccoli suffers no setbacks in growth due to various stresses, particularly crowded roots. If you can’t set out rootbound seedlings, do take a few minutes to pot them up into larger containers. Harden off greenhouse-grown seedlings for a few days before transplanting them into the garden. If there is an art to growing broccoli, it is doing whatever is necessary to sidestep stress.

3. Plant in Rich, Tight Soil

Broccoli needs plenty of nutrients, so be generous with compost and a balanced organic fertiliser when preparing planting space. Big broccoli plants rock in the wind, but not when they are firmly anchored in their favourite soil type, which is dense, clay-based loam with a near-neutral pH.

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Protect seedlings from pests and bad weather with cloches or tunnels

4. Protect Transplants with Cloches or Covers

Wind, hail, rabbits and squirrels cannot sabotage your broccoli when seedlings are protected with cloches or grown under netting or fleece tunnels. Covers will provide constant protection from wind, hail, animals, and egg laying by cabbage white butterflies, which hatch into leaf-eating caterpillars.

5. Feed and Water

Fertilise when tiny coin-size heads form deep inside the plants, using a water-soluble plant food. From this point on it’s important to avoid any unnecessary wetting of the emerging heads, which can lead to unwanted pockets of rot. Use a biodegradable mulch such as weathered straw to help keep roots cool and moist between waterings.

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A growing broccoli head can be protected from the elements by pinning together some of the long wrapper leaves

6. Protect Plants in Hot Summers

In hot summers, when the heads reach half their mature size, I use a wooden clothes pin to fasten the tips of three or four long leaves into a pointed hat that filters out sun and sheds rain for the last week or so before harvest. Alternatively, you can erect a cloth shade cover above maturing broccoli plants when the heads are almost ready to harvest.

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Broccoli is ready to harvest when the heads are full but still tight

7. Harvest Promptly

Most popular hybrids like ‘Belstar’ and ‘Marathon’ have medium-size florets, or heads, that should still be fully green, with no hint of yellowing, when the primary head is cut. Err on the side or earliness if you must! Many varieties produce smaller secondary heads after the main one is cut.

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