Tomatoes are heat-loving, sun-loving vegetables, but when the temperatures soar too high, the plants will stop setting fruit and eventually die off. Does that mean that gardeners in southern and southwestern regions can’t enjoy those juicy, sweet harvests? Thankfully, that’s not the case!
All that needs to be done is to choose the best tomatoes for the hot climate and give them suitable care to ensure they thrive and give plenty of ripe tomatoes at the end of the growing season.
Heat-tolerant tomato varieties are specially designed to give a hardy crop that won’t mind the summer heat. They will blossom and fruit with full vigor despite the high temperatures. What varieties should you go for and how best to keep them thriving. Read on and learn all about tomato gardening in hot climates.
How Hot Is Too Hot For Tomatoes?
Most tomato varieties are warm-season vegetables and are best planted when all the dangers of frost have passed. The optimal temperatures for blooming and fruit set are between 65°F to 80°F.
If the daytime temperatures exceed 95°F, the plants’ ability to set fruit and develop it to maturity will be adversely affected.
Prolonged exposure to high temperatures causes them to go into heat stress. As a defensive response, the plant increases transpiration and focuses its energies on surviving, rather than blossoming and fruiting. Not only does it slow down the development of the plant, but it also makes it susceptible to diseases and infestations.
Are Beefsteak Tomatoes Heat Tolerant?
Those big, meaty, juicy tomatoes that fall in the category of beefsteak tomatoes grow best when the soil temperatures are between 60 to 90°F. While Heirloom Beefsteak might not be too hardy to high temperatures, special hybrids have been developed over the ages to tolerate high temperatures better.
If you want to go for the same great flavor and yield as the original beefsteak, but with better heat tolerance, you might want to go for beefsteak hybrids. Big Beef, Black Krim and Cherokee Purple are all excellent beefsteak tomatoes for growing in hot climates.
What Tomatoes Grow Best In Hot Weather?
There are a bunch of heat tolerant tomato varieties that have been developed for performing better in hot, arid regions. These are known as “heat-set” or “hot-set” tomatoes and will often set fruit earlier than the other varieties to be harvested before the temperatures reach their peak. Here are some of the most common heat-tolerant varieties for your garden:
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It’s a juicy, mouth-watering beefsteak hybrid that will bear large fruits in 73 days. It’s disease-resistant, heat-tolerant, and also performs well in cool, wet weather.
Fourth of July
Fourth of July or ‘Independence day Tomato’ is an early-season tomato that ripens in 49 days, producing small, plentiful tomatoes.
Bush Early Girl
It’s an excellent heat-tolerant tomato to plant in containers and gives a high yield with 7-ounce tomatoes.
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It’s a determinate tomato plant that matures in just about 55 days, producing great-tasting 7-oz tomatoes at temperatures as high as 95°F.
This is another determinate tomato that matures in 72 days and produces juicy, globe-shaped tomatoes even when temperatures exceed 90°F.
Sun Leaper is a determinate hybrid that matures in 82 days and produces large, round tomatoes. It is very forgiving of harsh climates.
BHN216, Sun Pride, Talladega, Solar Fire, Heat Master, Florida 91, Summer Set, Florasette, Sunchaser, Rapsodie, and Equinox are also excellent heat-tolerant hybrid tomatoes.
If you’d rather go for the heirlooms, there are plenty of varieties that are well-suited to warmer climates. Here’s a list:
An indeterminate beefsteak heirloom that produces 10-ounce maroon tomatoes, reaching maturity in about 70 to 90 days after transplant.
It’s an indeterminate heirloom that matures in 90 days, tolerant to heat, humidity, and drought, and produces juicy, medium-sized tomatoes.
Green zebra is a determinate heirloom that produces green-yellow striped tomatoes, reaching maturity in 78 days.
This indeterminate tomato variety matures in 70 days, producing clusters of red, 4-ounce tomatoes and is excellent for hot, dry climates.
Other than these, Eva Purple Ball, Tropic, Neptune, Illinois Beauty, Sioux, Costoluto Genovese, Homestead 24, Quarter Century, and Hazelfield Farm are also great heirlooms to grow in hot climates.
How Do You Protect Tomatoes From Extreme Heat?
Besides choosing heat-tolerant tomatoes to plant, there are some tips that can help you maintain a healthy tomato crop through the hot weather.
- Don’t keep them thirsty
Pretty much like us humans, plants tend to get thirsty more often as the temperatures rise. Keep them well watered. Water them regularly, keeping the soil consistently moist but not waterlogged.
Mulching the soil around the plants with organic material like straw, leaves, or grass clippings helps keep the soil temperatures down. It also reduces evaporation from the soil, which is substantially higher in the heat.
- Planting Time
Gardeners in the tropics of subtropics are better off planting their tomato crop in winters. If you live in a hot climate, you can also start the plants indoors well before the last frost and transplant them in the garden after the frost. They will reach maturity before the summer temperatures reach their peak.
- Give Them Shade
Use a shade cloth over the plants to allow beneficial sunlight to reach the plants but block the excessive heat, especially during the hottest hours of the day. Make sure tha plants are protected from the afternoon sun.
So now you have tons of choices of heat tolerant tomato varieties for your garden. They won’t mind basking in the sun while preparing some flavorful, sweet harvests for you. Help them out by giving some extra care to protect them from the heat, and you’ll have plenty of juicy tomatoes to feast on.