What Are Grape Tomatoes?

Grape tomatoes are small, oblong fruits. They are a kind of cherry tomato, but with a savory taste that makes them popular for salads and quick snacks. Unlike other cherry tomatoes, these have thicker skins and a meatier texture. They also hold less water.

These tomatoes pack vitamins A and C, lycopene, and fiber – they even have a low glycemic index, so they fit a keto diet. Grape tomato plants thrive in zones 3-9. You’ll find both determinate and indeterminate types on the market.

Choosing the Right Grape Tomato Varieties

Picking the right grape tomato means looking at how it grows, if it shrugs off disease, and how long it takes to ripen. A smart plan involves planting a mix of different kinds, especially those that resist common ailments. Grape tomato plants come in two main types: determinate or indeterminate.

Determinate varieties, often called “bush” types, generally stop growing around 3 feet tall. They yield most of their fruit all at once. This makes them perfect for canning or growing in pots. Indeterminate plants, on the other hand, are vining. They keep producing tomatoes until the first hard frost, so they’ll need stakes or cages to hold them up.

You’ll find many popular options out there. Juliet hybrid, Cherry Roma, Riesentraube, and Green Grape are common choices. There’s also Yellow Jelly Bean and Red Grape. Some of these are organic heirlooms, while others are modern hybrids.

Starting Grape Tomato Seeds Indoors

Starting grape tomato seeds indoors lets plants get an early lead, useful in places with shorter growing seasons. Begin this about 6 weeks before the last frost. For the best germination, keep soil at 85°F – a heating mat makes this easy. Seeds usually sprout in just a few days. Once seeds germinate and small leaves pop out, grow the plants at 72°F. This step helps young plants get strong before going outside, lessening the shock when they move to the garden.

Preparing Your Garden for Grape Tomatoes

Grape tomatoes are delicate plants. They need a warm growing season and won’t survive frost. For the best flavor and growth, plant them somewhere sunny, getting 6 to 8 hours of direct light each day. Gardeners in northern areas often aim for 8 to 10 hours. The soil’s pH should sit between 6.2 and 6.8 – this helps the plants get their nutrients.

Ready the soil by mixing in 3 to 4 inches of compost and a few inches of good garden soil – an aged, compost-rich type works well. This improves the soil’s structure, adds minor nutrients, and keeps it from drying out too fast. Make sure it drains well; grape tomatoes hate soggy roots. Remember crop rotation: plant your tomatoes where no other nightshade plants have grown for at least four years. This keeps diseases away.

If you’re using containers, pick pots with proper drainage holes. Determinate varieties need at least an 18-inch pot. Indeterminate kinds need 24 inches or more. One tomato plant needs a minimum five-gallon container. Fill these pots with a quality potting mix to give your plants what they need. These simple steps help ensure a great harvest.

Planting Grape Tomatoes

Plant grape tomatoes in late spring or early summer, once frost danger has passed. When you move seedlings outside, bury roughly two-thirds of the stem. This deep planting helps new roots – along the buried stem – grow, making the plant stronger and better at soaking up nutrients. Indeterminate types need about 3 feet of room. Determinate varieties can go in at 2 feet apart, or 18 inches in rich garden soil.

Water the seedlings right after planting; this helps them settle and lessens transplant shock. For an earlier crop, use starter plants instead of seeds. Hardening off seedlings before transplanting helps them get used to the outdoors.

Essential Care for Grape Tomato Plants

Healthy grape tomato plants need steady care. Water them often, aiming for at least an inch of moisture each week – more during summer. The best time to water is early morning, at the plant’s base. This keeps leaves dry, stopping disease from spreading. Skip overhead watering and don’t water in the afternoon.

Five weeks after transplanting, spread mulch – straw or grass clippings – around your plants. This helps hold moisture, keeps weeds down, and blocks soil pathogens from splashing onto leaves. Once tomatoes hit about an inch across, fertilize every two weeks with liquid seaweed, fish emulsion, or an organic mix. Keep this up every 3 to 4 weeks until frost hits. Stay away from fast-release or high-nitrogen fertilizers. Check plants every day for pests or diseases.

If you live in a hot climate, pick heat-tolerant varieties and give them shade in the afternoon. Cover young plants at night to guard them against late spring cold. Good air circulation helps stave off fungal issues. Consider drip irrigation or soaker hoses for smart watering.

Supporting Grape Tomato Plants

Grape tomato plants need support, even if they’re determinate varieties. Unsupported plants will flop. Their fruits grow in heavy clusters, weighing down the vines. Staking, trellising, or caging are common solutions. These methods lift fruit off the ground, limit disease, and increase how much you harvest.

Most plants do best with a 5- to 6-foot stake, cage, or trellis. Gently tie stems to stakes using soft materials – rags, nylon stockings, twine, or string work well. Concrete reinforcing wire can also serve as support.

Pruning Grape Tomato Plants

Determinate varieties usually need less pruning. Their growth stays compact.

Trimming grape tomato plants, especially indeterminate types, helps with air circulation and gets them more sun. This often means taking off “suckers,” the shoots that pop up between the main stem and a branch.

You can also snip off lower leaves from the bottom 12 inches of the stem. Pruning can push energy into making fruit. Still, some gardeners skip it entirely – they worry about losing fruit buds or draining the plant’s energy.

Harvesting Grape Tomatoes

Grape tomatoes are ready to pick in about 2.5 months, though this varies by type. Look for firmness and full color – bright red for red varieties, for example. Picking them fast encourages the plant to make more fruit and eases its stress.

Keep tomatoes you’ve picked at room temperature, either inside or in a shady spot outside. Never put them in the fridge. Temperatures under 55°F ruin their flavor compounds. If you have a lot, you can freeze, can, or dry them. To freeze, just core fresh, perfect tomatoes and put them whole into freezer bags or containers.

To ripen tomatoes off the vine, pull the whole plant up, strip off its leaves, and hang it upside down in a cool, dark room. Another option is to put mature, pale green tomatoes in a paper bag or wrap them in paper inside a cardboard box.