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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 Asparagus


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Asparagus
An asparagus bed can bring you luxury for 20 years

Asparagus

Asparagus officinalis

Family: Liliaceae (Group 6)

Asparagus is a perennial plant which can be productive for 8-20 years. Although cutting cannot begin until the second year, and full production not till the third year, a crop of such longevity (and luxury) will repay great care in preparing the growing site.

Cultivation instructions for the plant known as Lincolnshire asparagus can be found in the herbs section. Asparagus kale is a variety of rape kale. Please see the page on kale. Asparagus peas are another crop which some gardeners enjoy. Brief directions for cultivation of this crop can be found in the vegetable cultivation table.

Site/soil

Asparagus thrives on a wide range of soil types, from heavy clay to sand, provided the soil is well drained. Preferred pH is 6.3-7.5, but it does not need to be particularly fertile. Lime acid soil and avoid exposed sites, frost pockets and sites where asparagus has been grown before.

Recommended cultivars

Older varieties: Connover's Colossal - for light soils
Giant Mammoth - for heavy soils
Purple Argenteuil - a late French variety, cropping from the end of the normal season
Martha Washington - rust resistant
Modern all-male hybrids: Cito, Franklim, Limbra, Lucullus

Cultivation

Traditionally grown on ridged or raised beds to give a long blanched stem. It is possible to plant on the flat, then to raise the bed by earthing up in the second season.

Prepare the ground by digging thoroughly and incorporating a good dressing of well rotted farmyard manure or compost. On heavy land do this the previous autumn. Make sure all traces of perennial weeds have been removed, as it is very difficult to weed asparagus once it is established.

Plant one-year-old crowns 10cm (4") deep, spacing them 30-45cm (12-18") apart, and with 30cm (12") between rows, in March or early April. Take out a trench 30cm (12") wide by 20cm (8") deep, making a mound in the bottom about 10cm (4") high. Handling crowns very carefully, spread out the roots over the mound and cover with about 5cm (2") of fine soil. Fill in the trench gradually as the shoots grow.

Plant module-grown asparagus in or before June, 10cm (4") deep, at the same spacing. The same method is used for seed raised indoors.

To grow from seed, either sow in modules in February at 55-60ªF (11-16ªC) for planting out the same year as above, or outside in a seedbed in spring, in drills at least 2.5cm (1") deep. Thin to 7½cm (3") and plant out the largest crowns the following spring.

During the growing season, keep the beds weed free, taking care not to damage the roots. Remove any seedlings which appear. If necessary, supply canes and twine for support to prevent the ferns blowing over. After the fern has turned yellow, cut it down to within 2.5cm (1") of ground level and draw 5-8cm (2-3") of soil over the stumps (on heavy soils do this in spring). Top dress in spring with general fertiliser.

Harvest

Older cultivars cannot be harvested until 2 years after planting, more modern cultivars may be lightly harvested in the second season.

Cutting normally starts in the second half of April. Cut with a sharp knife or an asparagus knife, which has a forked blade so a single spear can be cut without damaging the others. Cut 5-8cm (2-3") below the soil when spears are 12-15cm (5-7") tall.

If harvesting in the second season, cut for four weeks, six weeks in the third season and eight weeks thereafter.

After cutting has finished for the year, apply a foliar feed of seaweed feed. Remove any berries that appear.

Pests, diseases and disorders

Asparagus beetle: grey-green grubs, black and yellow adults 1cm (¼") long. Remove all that are seen, dust with derris. Grow chives as repellent plants.

Violet root rot: Remove and burn affected plants. Remove all residual crop plants at the end of the season and suppress rampant weed growth, on which the disease might persist. Maintain high soil fertility with balanced fertiliser application and prevent waterlogging. Following severe attacks, avoid root crops for 4 years.

Slugs can be very damaging to young plants, traps may be helpful.

Fusarium root rot causes plants to die back with decay at the base or on the roots. Remove and destroy affected plants, improve drainage and adjust pH to near-neutral. Avoid growing legumes (peas and beans) on the site for at least 5 years.

Rust is rare, but serious when it occurs and should be dealt with immediately. Cut down and burn the ferns, dust bed with sulphur at monthly intervals, preferably in hot weather, making the first application about 3 weeks after the last shoots have been cut.

Frost may kill young shoots if severe in late spring. Destroy affected shoots. Cover bed with sacking if a late frost is expected.

Unsupported plants on an exposed site may suffer from wind rock, causing rotting. Provide support.

If you're interested in healthy food, you may also be interested in our sister site, The Health Site, Your Online Health Channel.


Article ©2004 Frann Leach. All rights reserved.

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