What are the ideal growing temps?

[gssgarden]

If a Tomato had a choice, what tempature would it like to be in? I'm guessing San Diego-ish!! lol

What are the optimum growing temps to get the most out of a plant?

A temp that avoids disease maybe?

65-70? 70-75? 80-85?

I'm asking this because I can't believe my plants are doing so well in the cool garage. I know they won't prosper at those temps but man, they are doing well.

[Worth1]

55 to 60 at night to 70 to 75 in the daytime.
Easy.

Worth

[gssgarden]

And that will get optimal growth and production?

Do hot house growers keep them at that temp?

thanks

[Cole_Robbie]

Water and humidity are another factor. Plants in a greenhouse or high tunnel don't get wet from dew every night. Cold is bad, but cold and wet is worse. Wet leaves promote fungal disease.

[Tracydr]

Too dry isn't good,either. I had pollination issues during the driest springs in AZ with humidity less than 5%.

[Worth1]

Originally Posted by gssgarden

And that will get optimal growth and production?

Do hot house growers keep them at that temp?

thanks

It does for me and I have no idea what hot house growers do or what the temp is.
When you grow in a hot house it is a different ballgame.

Worth

[Gardeneer]

Are we talking about seedlings or plants outside ?

In my opinion, for outside, night lows 55-60F and day highs in 75-90F. High temps become a problem with pollination and blossom drop. The amount of direct sun is yet another factor. If you plants are beaten by 12 hours (or more) sun, cooler ( under 85F) is better.

[bughunter99]

Forget the air and instead consider ground temperature. If the air is 60 degrees the plants are still going to be mighty peeved the ground is 40 (which is my case right now!)

[gregory]

are there members who live in San diego who can answer that question

I know my seedlings grew almost to well at 65-70 degrees