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Growing Radishes in The Northern Territory

Introducing Radishes

Quick and easy to grow. These sharp tasting little root-veggies are perfect for a first-time gardener, and a fun crop to grow with the kids. There are a range of varieties available, so choose your favourite, or try a few.

Classic Mistakes

Don’t let the soil become too dry. If the soil dries out, radishes may go to seed before you have a chance to harvest them.

Great Resources


Grow in: Full Sun

Soil Preparation

Radishes like rich, well-draining soil. Add some compost and to your soil before you plant.

Sowing Seed

Sow seed: April-July
Sowing depth: 6 mm

Sprinkle the seeds over your soil and cover lightly with soil or compost and water well. Sow seed every 2 weeks for an almost constant supply of radishes.


Plant seedlings:

Like other root crops, radishes are best planted from seed. They don’t like to have their roots disturbed.


Once your seedlings are up, thin them out according to the instructions on the seed packaging.


The soil should be moist and well-drained. Water your radishes regularly, but don’t let them sit in wet soil.


Don’t overfeed your radishes, too much nitrogen will result in beautiful leaves and underdeveloped roots. They grow so quickly that feeding may not be necessary, but if you do feed them, be sure to use a low nitrogen feed.


Radishes will appreciate a good organic mulch to keep the weeds out and the soil moist. Good options are shredded leaves, grass-clippings or straw.


Harvest: 4 to 7 Weeks After Planting

Simply pull your radishes from the soil. Try to harvest them while they’re still young. If they stay in the ground for too long, they start to become hard.

What to do about Snails and slugs?

Lay down grit, like eggshells or silica sand or create barriers around your plants. Remove any slugs or snails that you see.

What to do about Caterpillars?

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