When to Set Tomato Plants Outside

Setting tomato plants outside is an exciting time for gardeners because it means the growing season is finally in full swing. However, it's important to make sure the conditions are right before moving your precious seedlings into their permanent home. Here are some tips for timing your tomato plant's move outside:

Timing is Everything

The decision to set your tomato plants outside largely depends on the climate in your area. Ideally, tomato plants should be set out when the soil temperature is consistently above 60 degrees Fahrenheit (15.6 degrees Celsius) during the day, and nighttime temperatures don't drop below 50 degrees Fahrenheit (10 degrees Celsius). If the soil is too cool, the plant's roots won't grow properly, and the plant will be more susceptible to disease and pests.

Another factor to consider is the last frost date in your area. Tomato plants are extremely sensitive to frost and should never be set out until the danger of frost has passed. If you're unsure of your area's frost dates, you can check with your local extension office or consult a gardening book or website.

Preparing Your Plants for the Outdoors

Before you move your tomato plants outside, you'll need to prepare them for the transition. Start by exposing them to outdoor conditions gradually. This process, known as hardening off, prepares plants for outdoor life by gradually introducing them to the elements. Begin by placing the plants outside for a few hours each day, preferably in the shade or partial sun. Then gradually increase the amount of time they spend outside over the course of a week or two.

Make sure your tomato plants are also properly watered and fertilized before setting them outside. Dry or stressed plants will have a harder time adjusting to their new environment. Ideally, water your plants deeply once a week rather than giving them frequent, shallow watering.

Choosing the Right Spot

When it's time to set your tomato plants outside, make sure you choose the right location. Tomatoes need at least six to eight hours of sunlight each day to thrive, so choose a spot that receives full sun. They also prefer well-drained soil that's rich in organic matter. If your soil is heavy, clay-like, or poorly drained, consider amending it with compost or other organic matter.

Tomato plants also need support to grow properly. You can use tomato cages, stakes, or trellises to support your plants as they grow. Make sure the support is in place before planting the tomato, so you don't damage the roots later on.

Caring for Your Plants

After planting your tomato plants outside, it's important to continue to care for them properly. Continue to water your plants deeply once a week, being careful not to overwater them. Feed them regularly with a balanced fertilizer, following the instructions on the package. Watch out for signs of pests or disease, and take action as soon as you detect a problem.

Harvest your tomatoes as they ripen, being careful not to damage the plants in the process. You can pick them when they're still green and allow them to ripen off the vine, or wait until they're fully ripe and enjoy them fresh from the garden. With proper care and attention, your tomato plants will provide you with a bountiful harvest for months to come!