Tomatoes: Care

Tomatoes: Care

Seeds and Transplanting
Insects and Diseases


Every gardener has his own theory about pruning tomatoes. I only prune when the plant becomes too heavy or is difficult to train on the stake. Young prunings can be rooted in a glass of water and will be ready to set out in a couple of weeks. If you choose not to prune, you can pinch out the top of the plant to encourage bushy growth. This works well in hot climates.


Plants that are dark green and vigorous don't need more nitrogen. If your plants are yellowing, the addition of nitrogen will probably solve the problem. Some lower leaves will inevitably yellow and drop off up to three weeks after planting. Too much nitrogen will result in lots of dark green leaves and no fruit, so wait until blooms appear to side-dress with nitrogen. Try using a quart of manure tea for each plant. The recipe is one third manure and two thirds water, stirring daily for two weeks. Don't get it on the leaves, as they burn easily.

Mixing lime in with the soil will help reduce mineral imbalances that cause fruit deformities. The calcium in the lime will help prevent blossom end rot which is a common problem with tomatoes.


Stems need help to support the heavy fruit. Use 6 foot stakes and fix firmly in soil at planting to prevent root damage in growing plants. As the plant grows, secure it to the stake with soft ties at 12 inch intervals.

Tomato cages work very well. Use commercial cages or make your own from wire fence. Make sure the gage of the fence is large enough to allow you to insert your hand and pull out a large tomato. Caging usually results in smaller but more plentiful tomatoes.


Good companions for tomatoes include cabbage, carrots, celery, onion, mint, pot marigold (calendula) and borage. Borage actually improves the flavor of tomatoes, and the young leaves are a great addition to a tomato salad. Pot marigold and borage help deter tomato worms. Don't plant tomatoes near fennel or corn.

Saving Seeds

First, make sure your tomatoes are not hybrids. Hybrid tomato seeds will not not produce plants like the parents. Heirloom tomatoes are the best for saving seeds.

Choose the best tomatoes on your plant for seed saving. It's a good idea to choose some of the last fruit of the season and let them ripen fully on the vine. When the tomato dents easily when squeezed lightly, it's time to harvest seeds. Remove the seeds from the tomato, then pick up a dozen or so with the tip of a spoon. Spread the seeds around on an index card and allow the card to dry in an area with good ventilation. Once dry, write the name of your tomato plants on the card, seal them in a baggy, and store in a cool, dry place. Next spring the seeds will peel from the card easily.


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