Or really, Blossom End Rot- when the ends of the veggies you’re growing (most commonly in tomatoes and squash) don’t develop properly. It causes a large brown lesion to develop on the vegetable itself, and usually before the vegetable matures a large part of the veggie is lost to the disease. It’s most commonly caused by a lack of available calcium to the plant- so either your calcium/magnesium balance is off, you’ve not provided adequate calcium in the soil or “bedding” you’ve set the plant in, or the root system is too small to support the plant.
To correct the problem you’ve got to determine what you believe the cause is. We started to see the Blossom End Rot in our tomatoes and our zucchini which were planted in our straw bales. We assumed, since we had conditioned the bales ourselves- that the calcium within the bales was too low. To correct this, we decided to try a calcium foliar spray that we could brew at home.
The batch called for 20 eggshells and about a gallon of water. I cut this back since I didn’t have that many egg shells (my hens are freeloaders after all). It’s quite simple- you boil your eggshells for one hour and let the mix sit for 24 hours. After it has rested, you can take your mix and funnel it into a spray bottle. Spray liberally on your plants that are plagued by the BER (I always do a test spray to make sure something hasn’t snuck its way into my mix that could damage my plants) You can apply the mixture on a weekly basis as you fertilize.
We’ve seen a bit of improvement, almost immediately, with our zucchini but the tomatoes are still struggling. We will probably start to experiment with bone meal tea to see if that will stabilize them a bit. We had no problem with the cherry tomatoes, probably because they’re a smaller fruit. What is your experience with Blossom End Rot? What worked for you?