edenhana

Radish

One of the fastest vegetables to harvest, making it a good first crop for kids and impatient gardeners.

Sun
full sun
Water
moderate
Spacing
5cm
Harvest
Ready in 25-35 days
Difficulty
beginner
Grows in
Whangārei / Northland, Auckland, Hamilton / Waikato, Tauranga / Bay of Plenty, Gisborne, Napier / Hawke's Bay, New Plymouth / Taranaki, Palmerston North / Manawatū-Whanganui, Wellington, Nelson, Tasman, Blenheim / Marlborough, West Coast, Christchurch / Canterbury, Dunedin / Otago, Invercargill / Southland
Expected yield
Ready in 4-5 weeks, sow every 2 weeks for continuous supply
Cost to grow
~$4 NZD
Grocery value
~$15 NZD
Companion plants
Beans, Carrots, Cucumber, Lettuce, Peas, Beetroot
Plants to avoid nearby
Brassicas, Kale
Common diseases
Clubroot
Common pests
Flea beetle, Cabbage white caterpillar

When to plant by region

In Whangārei / Northland, Auckland, Tauranga / Bay of Plenty, Gisborne and Napier / Hawke's Bay: January-December. In Hamilton / Waikato, New Plymouth / Taranaki, Palmerston North / Manawatū-Whanganui, Wellington, Nelson and Tasman: February-December. In Blenheim / Marlborough, West Coast and Christchurch / Canterbury: February-April and August-November. In Dunedin / Otago and Invercargill / Southland: February-March and August-October.

Growing stages

  1. Germination & sowing

    • One of the fastest-germinating vegetables; sow direct, as transplanting disturbs the developing root
    • Needs full sun and even moisture from the start to swell quickly without turning woody

  2. Seedling & establishment

    • Flea beetle can riddle young seedling leaves with small holes; row covers help protect them early on
    • Being a brassica, seedlings are also susceptible to clubroot in poorly drained or acidic soil

  3. Root development

    • Cabbage white caterpillar can target foliage as it develops; check the undersides of leaves
    • Clubroot can affect roots in poorly drained or overly acidic soil

  4. Harvest25-35 days from sowing

    • Sow every 2 weeks for continuous supply, as this crop is quick to mature
    • Harvest promptly once roots size up, as they turn woody and pithy if left too long

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