Why Are My Tomatoes Hard

Stressful weather conditions, especially an up-and-down thermometer, disturb a tomato’s ripening process. Tomatoes exposed to low temperatures overnight are particularly susceptible to developing hard central cores.

How do you soften hard tomatoes?

The most classic way to ripen tomatoes is to tuck them away on the sunniest windowsill in your kitchen. Place the tomatoes stem-side down, which will keep them from rolling and makes them less likely to bruise on the hard surface. After a few days of soaking up the sun, they’ll be ripe and ready to enjoy.

Why are my green tomatoes so hard?

When tomatoes stay hard and fail to ripen, too-cold or too-hot temperatures may be to blame, as well as some fungal diseases particular to tomatoes.