My little son is worried about his plum tomatoes. It is in our front garden facing west, and gets full sun from noon on.
The bottom tip of a tomato is brown and wrinkly. It’s his favorite one. He wants to know if the tomato will die.
Thank you, guys. He eagerly awaits your reply.
The brown and wrinkly areas that you are noticing on the bottom of the fruit are an indication of blossom end rot which is commonly from calcium deficiency. While this may be a result of low calcium levels in the soil, more often it is the result of erratic watering. When the plant is allowed to get too dry, or given too much water over a period of time, its ability to absorb calcium from the soil is diminished. This often happens with the first fruit. We have had a lot of rain this summer so the problem may be too much water.
The best defense against blossom end rot is a consistent soil moisture level. Adding organic mulch such as compost around the plant will feed the soil and help keep the moisture level consistent. Also side-dressing the plants with bone-meal when they are flowering and setting fruit should reduce the risk of blossom-end rot by increasing the calcium levels in the soil. The use of an Epsom salt foliar spray (1 tablespoon per gallon of water) at the same time will boost the magnesium levels and improve the plants’ ability to use the calcium in the soil. Below is a link to our Gardening Guide on Organic Fertilizers for more details.
Good luck with your tomatoes. Hopefully your son will have some healthy new tomatoes to enjoy soon!