The Q&A Archives: Growing Tomatoes in a Sunroom

Question: I have an unheated sunroom off of my living room.It gets lots of bright light almost all day. It gets quite warm/ even hot on a bright day, but drops into the 60's at night. I want to put some tomatoes out there. I started some about a month ago in a small pot, 2 did very well. They have been out in the sunroom since they germinated. Today I transplanted them into a large round wooden basket,about 10 gal size, and packed about 8 gal of good compost around the original potting soil they were in. I put the whole basked into a slightly larger 18gal plastic tote, to catch the drainage. I have been misting the plants every few days with a VERY weak fish emulsion spray
and they look great- stocky and green. My question- is the light and temparature suitable to produce tomatoes in the sunroom??? I am not attempting large tomatoes, they are "Burpee 4th of July" which produce 4 oz. tomatoes and are indeterminate.

Answer: Tomatoes need about 8-10 hours minimum of sunlight per day. They like heat up to a certain point. (Over 90 degrees and their pollen is no longer viable.) If they continue to look healthy, don't worry about the temp. If not, you might want to provide some nighttime protection for them, particularly if the temps. in your sunroom drop. When flowers appear, gently "tap" them in the morning to pollinate. Unless you are also keeping bees in your sunroom! Good luck!

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