How to grow tomatoes: Gardening tips and tools
The soil you choose will affect the health of your plants, so be sure to select a high-quality potting mix that makes it easy for plants to anchor their roots. The mix should be able to drain well to avoid mold or rot but retain some moisture for the roots to drink.
4. Select your favorite variety based on space
Smaller tomato varieties grow best in pots and containers. They are also the most rewarding, as they tend to yield more — and better quality, sweeter — tomatoes. Plus, they ripen more quickly so you aren’t staring at green tomatoes for too long. In general, the types of tomatoes that grow best in pots are determinate species — those that reach a certain size and then the plant stops growing (non-determinate varieties just keep on getting taller and taller).
5. How to plant tomatoes
Fill each container halfway with potting mix. Then, place a stake in the soil to provide support and avoid damaging the roots later on. If you’re using seedlings grown in peat pellets, you can pop them straight in, container and all (this will eventually break down). If you’re using a larger plant, gently loosen the roots of your plant and position it in the center of the container. Scatter potting mix around the sides of your plant, filling the container up to 2 inches from the top. Press gently around the sides of the plant to secure it and remove any air from around the roots, making sure the stake is parallel to the plant.
6. How to water tomatoes
As a rule of thumb, a good, deep soak two to three times a week is better than regular light watering. Make sure you are watering the soil — not the leaves of the plants. Also, keep in mind that soggy soil and moist soil are not the same thing: If your soil is unable to drain and gets soggy, the roots will rot.
7. Feed your plant with fertilizer
Tomato plants thrive when they are well-fed. Nitrogen will make your plants lush and green, phosphorous encourages fruit growth and potassium enhances fruit color and flavor. Choose a fertilizer that is low in nitrogen and higher in phosphorus and potassium, as too much nitrogen will discourage fruiting. Check your potting mix to see if it contains these ingredients, and if not, select a controlled-release fertilizer to add to your pots when planting. You’ll need to continue to feed the plants throughout the season to keep them healthy.
8. How to care for growing plants
As your plants grow, use garden twine to secure them to the stake which will keep them supported. Once your plants flower, you can expect their first fruit about 30 days later. As your plants grow, remove the laterals — shoots that grow in a V-shape between the main stem and leaves — to encourage bigger and better fruit.
9. Be vigilant about plant diseases
Tomato blight is the most common disease that affects tomatoes — especially in humid areas — which causes leaves to rot, discolor and collapse. To prevent it, make sure you give plants plenty of room to breathe and keep the leaves dry. Inspect your plants frequently: If you detect blight, remove affected leaves from the plant and dispose of them off-site to discourage the disease from spreading. Copper sulfate spray, which you can find at your local plant store, is an effective and organic way to treat blight.