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Articles about Vegetable Crops for the Garden

  Advantages of Container Vegetable Gardens
  Best Vegetable Crops for Containers
  Brandywine Tomatoes - Get the Most From This Heirloom Variety
  Choosing a Site For Your Home Vegetable Garden
  Container Vegetable Gardening Tips
  Container Vegetable Gardens
  Double Your Crops
  Getting Children Interested in Growing Vegetables
  Grow Your Own Salad
  Growing Tomatoes in Pots
  Growing Vegetable Plants Becomes More Than Just A Hobby
  How to Grow a Vegetable Garden
  Indoor Container Vegetable Gardening Ideas
  Indoor Vegetable Gardening How to Tips
  Learning About Indoor Container Vegetable Gardening
  List of vegetable crops by difficulty
  Mushroom Growing in Odd Unused Spaces
  Non Hybrid Seeds For Survival Gardening
  Organic Container Gardening - Simple and Easy Ways to Grow Vegetables and Flowers in Pots
  Organic Vegetable Cultivation Table
  Over Wintering Chilli Pepper Plants
  pH preferences of food crops
  Planning your Container Crops
  Planting Tomatoes Upside Down
  Potato Container Garden Tips
  Preparing a Vegetable Garden
  Review: Food4Wealth by Jonathan White
  Vegetable Container Garden Tips
  Vegetable Crops in alphabetical order by name
  Why I Recommend Vegetable Container Gardening
  Why Vegetable Container Gardening is Getting More Popular Today Than Ever
  How to grow organic Asparagus
  How to grow organic Aubergines
  How to grow organic Beetroot
  How to grow organic Broad beans
  How to grow organic Broccoli
  How to grow organic Brussels sprouts
  How to grow organic Cabbage
  How to grow organic Calabrese
  How to grow organic Carrot
  How to grow organic Cauliflower
  How to grow organic Celeriac
  How to grow organic Celery
  How to grow organic Celtuce
  How to grow organic Chinese broccoli
  How to grow organic Chinese cabbage
  How to grow organic Chicory
  How to grow organic Corn
  How to grow organic Cucumbers and Gherkins
  How to grow organic Endive
  How to grow organic Florence fennel
  How to grow organic French beans
  How to grow organic Garlic
  How to grow organic Globe artichokes
  How to grow organic Jerusalem artichokes
  How to grow organic Kale and borecole
  How to grow organic Kohl rabi
  How to grow organic Komatsuna
  How to grow organic Land cress
  How to grow organic Leaf beet
  How to grow organic Leeks
  How to grow organic Lettuce
  How to grow organic Mizuna
  How to grow organic Mustard greens
  How to grow organic New Zealand spinach
  How to grow organic Onions
  How to grow organic Parsnips and Hamburg Parsley
  How to grow organic Peas
  How to grow organic Peppers (hot and sweet)
  How to grow organic Potatoes
  How to grow organic Radishes
  How to grow organic Rocket
  How to grow organic Runner beans
  How to grow organic Salad onions
  How to grow organic Salsify, Scorzonera and Scolymus
  How to grow organic Seakale
  How to grow organic Shallots
  How to grow organic Spinach
  How to grow organic Squash
  How to grow organic Swede
  How to grow organic Texsel greens
  How to grow organic Tomatoes
  How to grow organic Turnips




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Organic Gardening:


How to grow organic Radishes


by

Salad radishes
Summer radishes are great in salads

Radishes

Raphanus sativus

Family: Cruciferae (Group 2)

Radishes are very versatile vegetables. As well as the small summer radishes shown which we are all familiar with as salad ingredients, there are also larger winter radishes, the Asian 'mooli' types, and also radishes grown for their leaves or pods. The large winter and mooli types are usually used cooked (although they can be peeled and chopped for use in salads, if you wish), and the pods for stir-fry or raw in salad. Young radish leaves are tender and tasty and can also be used in salads.

Site and soil

Choose an open, unshaded site with fertile, well-drained and moisture retentive soil, which should be slightly acid (min pH 5.4, but see note on clubroot - add lime if necessary to adjust pH). Brassicas have a high nitrogen requirement and also need very firm soil. To ensure sufficient nutrient levels, it is best to topdress or apply a liquid feed such as seaweed fertiiser during growth.

Because brassicas are prone to soil infections, for example, Clubroot, it's important to use a minimum 3 year rotation plan.

Cultivation

Recommended cultivars

Small summer radishes: French breakfast, Cherry Belle, Prinz Rotin1
Mooli: April Cross2 F1, Mino Early, Minowase Summer Cross2 F1, White Icicle
Winter radish: Black Spanish Round, Cherokee, China Rose, Long Red Chinese
Leaf radish: Bisai
Podding radish: Munchen Bier
1 lasts longer without turning woody 2 bolt resistant
Radishes never develop well if at any stage they become overcrowded and lanky; the quality of all types is best when grown fast. In dry soil conditions, water the bottom of drills before sowing to encourage rapid germination.

Small summer radish

Make small successional sowings at 10 day intervals from late February to early September. Early sowings from February to April and late sowings in September to October may be made under cloches. Thin to about 2.5cm by 15cm (1"x6") as soon as possible. Keep well watered in dry weather at 2 gallons per sq yard per week. Midsummer sowings can be made in light shade or intersown between other crops. Harvest as required. Do not leave for too long after they reach eating size, as most varieties will become woody and unappetising, though some newer ones stand better than earlier varieties.

Mooli and large winter radishes

Used in salads, stir-fries, stew and especially curry. These midsummer-sown radish prefer a site in light shade, or can be intersown between other, taller crops. Soil should be light, well drained and fertile; rich sandy soils are ideal. Sow seeds 1cm (½") deep in mid June to August (bolt resistant cultivars can be sown in mid May). Spacing should be about 15cm each way (6"x6") after thinning. Do not allow seedlings to become overcrowded at any stage. Make sure they are kept well weeded and watered in dry weather at 2 gallons per sq yard per week to prevent woodiness. Mooli and winter radishes mature in 2½-3 months. Winter types can be left in the ground during winter and lifted when required, or lifted and stored in boxes in a cool shed or clamps, after trimming off the leaves. Mooli store well in the freezer if sliced and blanched.

Leaf radish

Although most cultivars can probably be sown closely for the use of the leaves, some have been selected especially. For a very early crop, sow seeds under cover in an unheated greenhouse, frame or polytunnel in February or March. Follow with outdoor sowings as soon as the soil is workable through till May and June. Sow again outdoors in late August or September or under cover in late September or October for a winter crop. Midsummer sowings are likely to bolt prematurely. Seeds can be broadcast for seedling crops. Spacing is 25cm (10") each way for large plants. Plants can be cut at 5-8cm (2-3") high as a seedling crop for salads or left to reach about 8" and cooked as greens. If they are thinned a few mooli-type radishes will develop.

Pod radish

Almost all radishes will eventually run to seed and produce pods, but at least one variety has been especially bred to produce them. Sow March to August thinly 1cm (½") deep in rows 30cm (12") apart, thin to 30cm (12") between plants. Harvest pods from June to November before the seeds start to swell.

Note on clubroot

Soil may remain infected for 20 years; steps to avoid introduction include:

  • good drainage
  • rotation
  • liming acid soils to a pH around 7
  • working in high levels of organic matter
  • ensuring clean plants are used - source must be known to be free of disease (best grown at home in sterile medium)
  • boots and tools used on infected land must be thoroughly cleaned before use on clean land

Once infected avoid growing any brassicas except fast maturing types such as Texsel greens or cut and come again oriental seedlings. If you have no other land available, and you must grow types with a lengthy growing season, you can try sowing seed in modules, and potting up until the plants reach a height of 10cm (4") before planting out. A root drench may also help.





Article ©2004 Frann Leach. All rights reserved.

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