How to grow your own kale

One of the most prevalent of the so-called superfoods these days, kale is easy to grow and resilient, writes Mat Pember, and keeps on keeping on.

Kale and sausage risotto

Sharyn Cairns; Styling: Megan Morton & Lisa Featherby



Beetroot seed

Bok Choy/Pak Choi seedling

Broad Beans seed

Broccoli seedling

Brussels Sprouts seed

Cabbage seed

Carrot seed

Cauliflower seed

Celery seedling

Coriander seedling

Fennel seedling 

Garlic (bulbs)

Herbs (all except basil) seedling

Kale seedling

Lettuce seedling

Parsnip seed

Peas seed

Radish seed

Rocket seedling

Silverbeet seedling

Spinach seedling

Spring onion seedling

Strawberry seedling

Swede seed

Turnip seed

Whether you love, hate or are ambivalent about kale seems to hinge on how long you’ve known it, and the relationship you’ve shared with it. If you have lived in the UK and tried allotment gardening, for example, you’d know that kale is about the only thing that survives during the winter. In this case it will rekindle memories of cold, wet winters infused with the smell of boiled kale. Most Australians, however, would have become familiar with it in the last decade and nowadays it has taken on superfood status.

In my youth, I knew kale’s Italian cousin, the sexier-sounding cavolo nero. I love eatingraw broccoli, cauliflower and cabbage – in fact,anything from the brassica family – so kale always has a place in my garden. I think of it fondly as the silverbeet of the brassicas, because where most winter crops fall over, kale stands tall.

See our best kale recipes here.

To grow kale it’s best to begin in the autumn months so March is ideal. While it will survive and even thrive in the toughest of winters, and summers for that matter, it prefers the cooler soil and even moisture of autumn.

When growing kale from seed, plant two seeds per individual seed cell and then water them in. The key to propagating seeds is providing constant moisture and even temperature, so placing your seed in a mini greenhouse is ideal. After seven to 10 days the seeds will germinate and if both pop up, cull the weaker.

Continue regular watering and a controlled environment and after two or three weeks the kale will be seedlings. At this point find it a permanent position in your garden.

Kale will outlast all other cool-season annuals, and continue to hang around throughout the following spring and summer. So choose a position that won’t impose on next spring’s plans; it will tolerate a spot that’s partly shaded but it prefers sun. Before planting, add compost and slow-release organic fertiliser to the soil. Being a leafy green, kale needs a lot of nitrogen for sustained growth. When planting in pots, use organic potting mix.

Kale plants are prone to heat stress early on, but once they’re past the first month, they’re here for the long run. To ensure success, water every day (in the morning) for the first two months. As the temperature cools down and rainfall increases, cut back to alternating days. And, as always, remember that potted plants will require more water.

At the same time, lock the moisture in with mulch. Pulverised pea straw, sugarcane or lucerne are best. Not only will the mulch provide its usual benefits (keeping the temperature even, reducing evaporation, weed control among them), but it will also deter the cabbage aphid.

To pick kale take the outer, mature leaves first, allowing the younger generation to come through. This style of harvesting allows the plant to keep producing. As picking continues, the stem of the kale continues to grow upwards, and it’s not uncommon to see plants picked this way for a year or so, with bare stems up to a metre and at the top perfectly tasty leaves sprouting.

Kale’s greater resistance comes from the cabbage white moth. Netting early – to prevent the moth from laying its larvae – diverts attention elsewhere, as will decoy moths (use sticks with white plastic flying at their ends to mimic them.)

Another problem on older plants is the build-up of the green-grey cabbage aphid on the inside of leaves. The best solution is to prune the infected areas, and use a soapy spray to clean off residue.

Kale can be kept in the ground until enough is enough. Whether that’s after too many green shakes or too much boiled kale is up to you.

Tip of the month: egg carton planters

Gardening is about versatility and resourcefulness. But mostly it’s about being creative in making the most of your resources and your gardening circumstances. It’s a fly-by-the-seat-of-your-pants kind of pastime, and if you blink, you could miss out on the beauty of turning an old egg carton into a biodegradable propagation kit.


An egg carton is one of the most adaptable recycling products around. It makes a good container for storing paints, can be made into toys, and can be converted into a 12-cell seed station.


Each egg cell will hold an ample volume of soil to happily germinate a seed and then see it through to early adolescence. When the seedling is mature enough to cope with the big wide world, it’s transplant time. Simply break apart the now-decomposing cell, bury it, plant and all, then bid it farewell, for, being biodegradable, it will break down into the soil.

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