Blossom end rot can turn your prized tomatoes, peppers and other fruiting and flowering crops into a depressing mess to look at, let alone consume. With a little understanding of what it is and how it can be prevented, you can ensure this very common disease does not plague your garden.

Blossom end rot may first appear to be a pest or fungus problem, but it definitely is not. It’s a development disorder caused by a nutrient deficiency, particularly calcium. Calcium is used by plants during cell growth. When there is not enough calcium in the soil or hydroponic solution, the fruit begins to develop watery spots. In later stages, the decaying tissue will blacken and feel dry. These spots typically start to appear at the blossom (or fruit’s) end which gives way to the name blossom end rot.

If your crop is already suffering from this deficiency it's wise to harvest the damaged fruits immediately. Cut away the damaged portion and use the remainder. By removing the affected fruit, the plant does not focus its energy on the “injury.” The best way to correct or prevent blossom end rot is by regularly using a calcium supplement. Calcium supplements are often fortified with magnesium as well. Some other calcium supplements go an extra set by adding in other micronutrients, which make for an easy-to-use product that ensures other deficiencies can be prevented at the same time. These plant tonics are a fantastic preventive measure we gardeners can use to ensure we are not chasing our tails and pulling our hair out looking for a solution to the problem our plants are having.

Other things that can reduce calcium uptake and cause blossom end rot include unstable moisture levels, improper pH and poor drainage of the soil or growing medium. Always ensure that your pH is within an acceptable range for what you're growing and that you're maintaining moisture levels. This practice coupled with a good supplement can ensure a smooth path to successful fruits.