Tomatoes grow best in a greenhouse in cooler areas, though many varieties can also be grown outdoors. Choose healthy, young plants for transplanting, and harden off outdoor varieties before planting by gradually exposing them to outdoor conditions once all risk of frost has passed.

Plant tomatoes in fertile, well-drained soil, in pots, growing bags, or garden beds. Space plants 30 in apart outdoors or 25 in apart in greenhouse borders. Provide strong support with stakes, cages, or trellises to keep stems upright and fruit off the ground. Water consistently to keep soil evenly moist, and feed weekly once the first flowers appear to encourage healthy growth and fruiting. Remove yellowing leaves as they develop, and pinch out side shoots on cordon (indeterminate) varieties to focus energy on the main stems and improve fruit production.

Training and supporting tomato plants is essential for healthy growth, higher yields, and easier harvesting. Proper support keeps plants upright, prevents fruit from touching the ground, reduces disease risk, and makes pruning and care simpler. Different tomato types and garden setups may require different support techniques, and many gardeners combine methods to suit their space and plant varieties.

Different Ways to Train and Support Your Tomatoes:

Staking: Staking involves placing a single sturdy stake—made of wood, metal, or bamboo—next to each tomato plant. The main stem is tied loosely to the stake using soft twine, cloth strips, or plant ties, which keep the plant upright and the fruit off the ground. Staking works best for indeterminate (vining) tomatoes or smaller determinate varieties, and is ideal when space is limited, or you want to grow a few large plants individually rather than in rows. Read more here or watch this video to learn more about staking and how to accomplish it to achieve greater results.

Caging: Tomato cages are wire or metal structures placed around the plant to support multiple stems and contain the foliage. Cages reduce the need for constant tying and help improve airflow, lowering the risk of disease. This method is especially useful for medium-sized gardens, container-grown plants, or when growing several determinate or semi-determinate tomatoes in proximity, as it keeps plants organized and upright. Learn more about how to use cages on your tomato plants with this article here or this YouTube video.

Trellising / String Support: Trellising uses horizontal or vertical supports, often with twine or string, to train tomato plants upward. This approach is especially effective for large, vining indeterminate tomatoes and is commonly used in greenhouses, vertical gardens, or high-density setups where maximizing space and sunlight exposure is important. By combining trellising with selective pruning, gardeners can focus the plant’s energy on producing fruit rather than excessive foliage.

Florida Weave: The Florida weave is a row-support technique commonly used for multiple tomato plants planted in a line. Stakes are placed at intervals along the row, and string is woven back and forth between plants to hold them upright. This method is ideal when growing several determinate or indeterminate plants in long garden beds or rows, making it efficient for larger garden spaces and small-scale commercial setups.

Pruning & Training: Pruning involves removing suckers—the small shoots that develop between the main stem and branches—to direct the plant’s energy toward producing larger, healthier fruit. Training works hand-in-hand with staking, caging, or trellising to shape the plant and keep it supported. Proper pruning and training are particularly important for indeterminate varieties, or when growing in limited space, because it improves airflow, reduce disease, and make harvesting easier while increasing overall productivity.

Growing tomatoes in containers is ideal because fresh compost and bagged mixes reduce the risk of soil-borne diseases and let you position plants in a warm, sheltered, sun-filled spot. Choose a sturdy pot at least 15 inches (38cm) wide and place a layer of rocks or crocks at the bottom for drainage, then fill with high-quality peat-based compost and plant one tomato per container. Growing bags are another great option—poke drainage holes in the base first, then plant two or three tomatoes in each, spacing them evenly so they have room to develop. Containers dry out faster than garden soil, so plan to water more frequently, especially in hot weather, and feed plants regularly once they start flowering. Tumbling or trailing tomatoes thrive in hanging baskets lined with pierced plastic to retain moisture; position plants near the rim so stems drape naturally over the sides. Hang baskets in a sheltered location away from strong winds, water daily, and enjoy a steady supply of fruit right outside your door.

Yellow leaves, especially older ones: Could mean the plant is underwatered or the soil is unevenly dry. Water deeply and consistently, making sure the soil stays evenly moist. Mulch around the base to retain moisture.

Wilting during the day but recovering at night: Usually a sign of temporary water stress from heat or shallow roots. Increase watering frequency and make sure plants are mulched to keep roots cool.

Cracked or splitting fruit: Often caused by irregular watering—too dry followed by heavy watering or rain. Keep a consistent watering schedule and water slowly to soak the soil deeply.

Blossom-end rot (dark, sunken bottom of fruit): Triggered by calcium deficiency caused by inconsistent moisture. Water evenly, mulch to hold moisture, and avoid over-fertilizing with high nitrogen.

Curling leaves: May indicate both underwatering and overwatering. Check soil moisture; water deeply only when the top 1–2 inches of soil are dry.

Watering method: Always water at the base of the plant, not over the leaves, to prevent fungal diseases. Early morning is best, so leaves dry quickly.

Container-grown tomatoes: Containers dry out faster than garden beds. Check daily, water deeply, and feed regularly since nutrients wash out faster with frequent watering.