Posts tagged blight

Tomato blight has hit Vancouver in fall 2010

Sept 19, 2010.

It seems as if blight has hit the Lower Mainland. Many tomatoes will ripen indoors. So head to your garden ASAP,  pick your tomatoes and store between layers of shredded newspaper, egg cartons works well for smaller tomatoes like cherry and sundrop. Dry the tomatoes before you store them but leaving the stems/vine on will improve flavour.

If you want to use your tomatoes green here are some links to some recipes:

Green tomato & mint spaghetti:

Pickled green tomatoes:

Green Sauce:

Share your stories of surviving blight below in comments.

Ways to control blight. From

  1. Grow plants in a warm, dry, sunny area. If you have had blight previously, move to a different area if possible, or replace the upper soil layer since “oospores” will carryover in soil.
  2. Water only underneath the plants, not the foliage. Drip irrigation is preferable to watering with a hose, to reduce water splash. Don’t over fertilize or over water.
  3. Grow on a light sandy soil if possible or cover soil with a white plastic mulch to increase soil and air temperatures around the plants and reduce humidity.
  4. Growing plants under an overhang or a clear plastic shelter will help prevent spores from being deposited on plants by wind and rain. But plants must be covered before infection has occurred. Covering the plants after they are infected may raise humidity and make the disease worse.
  5. Grow the tomatoes on raised beds with well-spaced trellises or in containers off the ground. Tomatoes grown on balconies or roof-tops rarely develop late blight, probably because the environment is warmer and drier.
  6. Remove all of last year’s tomato or potato debris to prevent carryover of disease.
  7. Remove diseased leaves, shoots and plants that are severely diseased, immediately. Bury them, or seal them in a plastic bag and take to a landfill. Do not compost diseased plants. If “oospores” are present, they will survive in compost.
  8. Destroy any volunteer potato or tomato plants in the garden.
  9. Destroy any nightshade weeds in and near the garden. Nightshade is related to tomato and potato and is also a good host for late blight.
  10. Apply copper sprays or other home garden fungicides recommended for late blight at least once a week when weather is favourable for disease. READ THE LABEL. Copper, which is accepted by most organic producers, should be applied for prevention more than cure, that is, before the disease has become established.
  11. Gardeners who are unable or choose not to follow a regular fungicide spray program for late blight are strongly urged to destroy (bag or bury) all infected tomato or potato garden plants or plant parts as soon as the disease is observed. If in doubt whether it is late blight, take a sample to a local garden centre or Master Gardener for tomato

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