[daniel1212]

Some answers to "what is the lowest temp safe for tomato planting?" I though would be helpful to post (33F predicted for Boston area this Wed. night, but 44 Sun. PM):

People also ask

What temp is too cold for tomato plants?

Although tomato plants can survive temperatures down to 33 degrees Fahrenheit, they show problems when temperatures drop below 50 degrees F, according to the U.S. Department of Agriculture Research Service.Dec 14, 2018

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What low temperature kills tomato plants?

Nights with temperatures in the 40s won\'t kill your plants as impressively as frost, but those temperatures will stunt the growth of your tomato plants.May 2, 2013

Garden Plot: Tomato plants need warm nights | WTOP

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Is 45 degrees too cold for tomato plants?

Tomato plants at any age or stage do not tolerate frost. You can generally move young seedlings outdoors when the temperature rises about 45 degrees Fahrenheit. A temperature of 46 F would be warm enough for tomato seedlings.

Is 46 Degrees Too Cold for Tomato Seedlings? | Home Guides | SF ...

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Can tomato plants survive 40 degree weather?

Although mature plants might survive light frosts, temperatures below 40 degrees Fahrenheit damage flower and fruit production, making tomatoes perennial only in U.S. Department of Agriculture zones 12 and up. ... They flower and set fruit best when the air and soil temperatures range between 60 and 70 degrees.

How Much Cold Can Tomatoes Survive In? | Home Guides | SF Gate

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How do I protect my tomatoes from cold nights?

Use a Cover to Protect Tomatoes

When frost or temperatures are in the forecast for overnight (mid-30s or even 40ºF), cover your tomato plants with clear plastic or a tarp. If you face an extended cold pattern, consider using quality frost protection regularly.

How to Protect Tomatoes on Cold Nights - Tomato Dirt

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At what temperature should I cover my plants?

* Cover plants at night. Covers vary in their insulation characteristics, but they can generally add 3 to 5 degrees to the ambient air temperature, helping to protect plants against freezing temperatures. They can be used on nights where temperatures drop as low as 28 F.May 16, 2017

What temperature is safe for tomato plants?

Although tomato plants can survive temperatures down to 33 degrees Fahrenheit, they show problems when temperatures drop below 50 degrees F, according to the U.S. Department of Agriculture Research Service.Dec 14, 2018

Night Temperature for Tomatoes | Home Guides | SF Gate

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Is 42 degrees too cold for tomato plants?

Tomato plants at any age or stage do not tolerate frost. You can generally move young seedlings outdoors when the temperature rises about 45 degrees Fahrenheit. A temperature of 46 F would be warm enough for tomato seedlings.

Is 46 Degrees Too Cold for Tomato Seedlings? | Home Guides | SF ...

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Can plants survive 40 degree weather?

You can plant these hardy annuals when there are 40 degree temperatures as long as your plants are not brand-new seedlings. ... The plants may survive in areas with mild winters and die back in the spring. Edible, cool-season vegetables.Nov 28, 2018

Garden Plot: Tomato plants need warm nights | WTOP

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What temperature will kill pepper plants?

A temperature of 32 degrees Fahrenheit or below will result in frost, which will kill your pepper plants. Any temperature below 55 degrees will slow down the growth of mature pepper plants, and will stunt seedlings.

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Can tomatoes recover from frost damage?

Tomatoes (Lycopersicon esculentum) are tender plants that can't withstand a heavy frost, but slightly frosted plants may recover. ... At 40 degrees Fahrenheit and lower temperatures, tomato plants' leaves, stems and fruits suffer damage, but you can help save the plants by protecting them from further frosts.

How often should tomatoes be watered?

Water newly planted tomatoes well to make sure soil is moist and ideal for growing. Early in the growing season, watering plants daily in the morning. As temperatures increase, you might need to water tomato plants twice a day. Garden tomatoes typically require 1-2 inches of water a week.Jun 23, 2016

How Much Water Do My Tomato Plants Need? | Espoma

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Is 35 degrees too cold for plants?

Half-hardy annual flowers can survive brief, light frosts and temperatures of 35 degrees to 45 degrees. To be safe, protect all your plants when the temperatures drop. If the forecast calls for a cold front or frost, use the methods below to cover your flowers.

55 degrees Fahrenheit

Temperatures below 55 degrees Fahrenheit are too low to grow a healthy tomato plant. The low temperatures interfere with normal pollination of the blossoms, which drop off the plants.Jan 12, 2018

What Temperature Will Damage Tomato Plants? - Home Guides

[Sacajaweau]

If it's too cold for me, it's too cold for tomatoes.

I'm in Upstate, very close to Lake Ontario. Usually grow tomatoes inside until June 1.

I bought a second meat thermometer to test the soil temp. Very accurate and at the right depth.

[metmom]

I’ve noticed that tomatoes do NOT like temps below 50.

I have my seedlings in 6 packs that I keep in a dishpan.

The sides of the dishpan are high enough to block a lot of the cold wind and when I put them on my sheltered south facing porch, it’s like moving them up a couple climate zones.

However, I ALWAYS bring them in at night until it’s warm enough to actually plant them outdoors.

[Qiviut]

Thanks for all the good info. I’d always heard that planting tomatoes is best when nighttime temps are not dropping below the 50’s.

The 4 tomatoes I planted were probably a good 6-8” tall, not new seedlings. They got sun scald (my fault) the first day they were outside. One tomato plant is still looking alive - I covered it with a 5-gallon bucket Fri/Sat nights when we set a new record low (33F) for this time of year.

Previously, when I planted tomatoes early, they didn’t do much growing until temps were staying in the 50’s at night, then they started “taking off”.

It looks like I’ll have to replace the 3 tomato plants that died - fingers crossed my one remaining plant makes it because it is a “Celebrity”, my very favorite tomato. I’m not sure if I’ll be able to find Celebrities when I start looking again.

The sunflowers/tithonia did great under the plastic. The radishes could probably survive a nuclear event. My peppers (bell & jalapeno - fresh seeds for both) have not come up from seeds & it’s been at least 2 weeks. The “old” seed (lettuces, scallions, onions) also do not look like they’re coming up. IF I can find bell/jalapeno plants at a reasonable price, I will buys some 4-packs & give up on the ‘from seed’ idea. The cucumber seeds have germinated - noticed some 2-leaf plants emerging from the soil Friday - covered them with clay pots & as of yesterday,they looked like they made it through the cold temps.

The birds are feeding heavily again at the feeders - the cold mornings have them fueling up early/late. I put out Nyger thistle for the first time & the Goldfinches have been coming in droves - like rays of sunshine with their bright gold coats! I spent some birthday money on a thistle feeder - money well-spent & I’ll be feeding thistle seed for sure in the future.

[TheErnFormerlyKnownAsBig]

I found out last year that high temperatures sterilize tomato and pepper pollen.

I was trying to grow, from start to finish, my toms and peppers in my greenhouse for the 1st time.

I was having success with my tomatoes but my peppers were blooming and not setting peppers. I had them suspended from the ceiling and the tomatoes were in the beds.

The greenhouse vents open automatically around 85-90 degrees but the ceiling stays hot....sometimes close to 100 even with the vent open.

I did some research and found out that Temps over 90 (I think the number was 93) sterilize the pepper and tomato pollen and you get blossoms but no fruit set.

I took the peppers down and put them at a lower level and viola.....peppers popped within a couple of weeks.