Top 10 Tomato Growing Tips

Fresh tomatoes
thayra/Twenty 20

Is it ever too early to be thinking about your tomato plants? Not if you're the competitive tomato gardening type who wants the earliest and sweetest tomato on the block.To grow great tasting tomatoes, choose your favorite varieties, start them off right and control problems before they happen. Start here with some time tested tomato growing tips, to ensure your bragging rights this year.

  • 01 of 10
    Tomato Seedlings
    Once your seedlings have grow "true leaves", they can be put into individual pots. Photo: Kevin Summers / Getty Images

    If you are starting tomatoes from seed, be sure to give the seedlings plenty of room to branch out. Crowded conditions inhibit their growth and lead to disease, so transplant them into their own individual 4 in. pot, shortly after they get their first set of true leaves.

  • 02 of 10
    Keep seedlings within inches of the light source.
    Keep seedlings within inches of the light source. Photo: © Marie Iannotti

    Tomato seedlings need strong, direct light. Days are short during winter, so even placing them near a very sunny window may not provide them with sufficient natural light. Unless you are growing them in a greenhouse, your best option is to use some type of artificial plant lighting, for 14-18 hours every day.

    To ensure the plants grow stocky, not spindly, keep the young plants only a couple of inches from fluorescent grow lights. You will need to raise the lights (or lower the plants) as the...MORE seedlings grow. When you're ready to plant them outside, choose the sunniest part of your vegetable garden.

  • 03 of 10
    Growing plants
    If growing them indoors, provide a breeze for your tomatoes. s0ulsurfing - Jason Swain / Getty Images

    It seems tomato plants need to move and sway in the breeze, to develop strong stems. That happens naturally outdoors, but if you are growing your seedlings inside, you will need to provide the air circulation. Create a breeze by turning a fan on them for 5-10 minutes, twice a day.

    Another option is to ruffle them by gently rubbing your hand back and forth across their tops for a few minutes, several times a day. It's a bit more effort, but their wonderful tomato scent will rub off on you, as...MORE a bonus.

  • 04 of 10
    Plastic Mulch Sheeting Warms the Soil Before Planting.
    Plastic mulch sheeting warms the soil before planting. Photo: © Marie Iannotti

    Tomatoes love heat. Cover the planting area with black or red plastic a couple of weeks before you intend to plant. Those extra degrees of soil warmth will translate into earlier tomatoes.

    A reader, David, wrote to say he thinks clear plastic works best. It "...lets the sun's energy through and then traps that heat energy." Plus it causes weed seeds to germinate and then fries them, so they won't come back.

    You can lift the plastic before you plant, but some research contends that r...MOREed plastic mulch has the added benefit of increasing your tomato yield.

    Continue to 5 of 10 below.
  • 05 of 10
    How to Plant a Tomato
    Tomato plants can grow roots all along their stems. Plant them deeply. Photo: © Marie Iannotti

    Plant your tomato plants deeper than they come in the pot, all the way up to the top few leaves. When planted this way, tomatoes are able to develop roots all along their stems. And more roots will make for a stronger plant.

    You can either dig a deep hole or simply dig a shallow trench and lay the plant sideways. It will quickly straighten itself up and grow toward the sun. Just be careful not to drive your stake or cage into the buried stem.

  • 06 of 10
    Straw Makes a Great Vegetable Garden Mulch.
    Straw Makes a Great Vegetable Garden Mulch. Photo: © Marie Iannotti

    If you are not going to leave plastic mulch on the soil (see Tip #4, above), hold off on putting down mulch until after the ground has had a chance to warm up. While mulching does conserve water and prevents the soil and soil born diseases from splashing up on the plants, if you put it down too early it will also shade and therefore cool the soil.

  • 07 of 10
    Tomato Leaf Spot
    Many tomato diseases start with the older, lower leaves and move up the plant. Photo: © Marie Iannotti

    Once your tomato plants reach about 3 ft. tall, remove the leaves from the bottom 1 ft. of ​stem. These are the oldest leaves and they are usually the first leaves to develop fungus problems. As the plants fill out, the bottom leaves get the least amount of sun and air flow. And being close to the ground, soil born pathogens can easily splash up onto them. Spraying weekly with compost tea also seems to be effective at warding off fungus diseases.

  • 08 of 10
    Tomato Suckers in the Joint of Branches.
    Tomato suckers form in the joinst of branches. Photo: © Marie Iannotti

    Pinch and remove suckers that develop in the crotch joint of two branches. They won’t bear fruit and will take energy away from the rest of the plant.

    However go easy on pruning the rest of the plant. You can thin out a few leaves to allow the sun to reach the ripening fruit, but it's the leaves that are photosynthesizing and creating the sugars that give flavor to your tomatoes.

    Continue to 9 of 10 below.
  • 09 of 10
    Blossom End Rot
    Blossom End Rot doesn't show up until the tomato ripens. Photo: © Marie Iannotti

    Water deeply and regularly while the fruits are developing. Irregular watering - missing a week and trying to make up for it - leads to blossom end rot and cracking. The rule of thumb is to ensure your plants get at least 1 in. of water per week, but during hot, dry spells, they may need more. If your plants start to look wilted for most of the day, give them a drink.

    Once the fruit begins to ripen, you can ease up on watering. Lessening the water will coax the plant into concentrating its...MORE sugars, for better flavor. Use your judgment. Don’t withhold water so much that the plants continually wilt and become stressed or they will drop their blossoms and possibly their fruit.

  • 10 of 10
    Tomatoes growing on the vine
    Cecile Lavabre/Photographer's Choice RF/Getty Images

    A lot of vegetable gardening is at the mercy of the weather, but sometimes we can help things along. There are two types of tomato plants. Determinate tomatoes reach a certain height and then set and ripen their fruit all at one time, making a large quantity available when you’re ready to make sauce. These tend to start flowering fairly early in the season and it shouldn't be a problem getting them to set fruit ​unless weather conditions are unfavorable and cause a condition aptly named...MORE "blossom drop".

    Those big, juicy beefsteak tomatoes we all crave grow on indeterminate plants. Indeterminate means the plants just keep growing. Tomatoes are vines, after all, and indeterminate tomatoes reach for the sun. They like to grow tall before they start setting fruits.

    If you're impatient, pinching off the tips of the main stems in early summer will encourage indeterminate tomatoes to start putting their energy into flowering. This is also a handy trick toward the end of the summer when you want the last tomatoes to hurry up and ripen.