Answer: I don't think you're doing anything wrong with your tomato plant. Tomato blossoms will drop off when temperatures fluctuate below or above the required temperature zone for any extended period of time. In order to hold blossoms and set fruit, tomatoes need night temps above 55 degrees and daytime temps below 90 degrees. Blossoms will also dry up and fall off if plants do not receive enough water, if they're getting excessive nitrogen and receive too much shade. Regularly monitor soil moisture levels, especially during hot spells. The top inch or two of soil can be allowed to dry out, but consistent moisture should always be available to the roots. You'll just need to be a little more patient with your plant. I'm sure the right combination of temperature and insect activity will occur and you'll eventually have some luscious tomatoes to harvest. Enjoy!
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