Blossom End Rot: Why It Happens in Containers and How to Prevent It
Youโve been nurturing your container-grown tomatoes, peppers, or squash with careโonly to discover a dark, sunken spot at the base of the fruit. Thatโs blossom end rot, and itโs a frustrating problem that strikes even the most attentive gardeners. The good news? Itโs preventable with the right approach. ๐๐ก๐๐ญ ๐๐ฌ ๐๐ฅ๐จ๐ฌ๐ฌ๐จ๐ฆ ๐๐ง๐ ๐๐จ๐ญ? Blossom end rot is a physiological disorder (not a disease) caused by a calcium imbalance in the plant. It shows up as a black or brown leathery patch at the bottom (blossom end) of the fruit. ๐๐ก๐ฒ ๐๐ญ ๐๐๐ฉ๐ฉ๐๐ง๐ฌ ๐ข๐ง ๐๐จ๐ง๐ญ๐๐ข๐ง๐๐ซ๐ฌ * Inconsistent Watering: Fluctuations in soil moisture make it harder for plants to absorb calcium. * Calcium Deficiency: Often not due to a lack of calcium in the soil, but the plantโs inability to take it up. * Poor Soil Mix: Using soil that lacks nutrients or drains poorly can contribute. * Overfertilizing: Excess nitrogen can promote rapid growth and outpace calcium availability. ๐๐จ๐ฆ๐ฆ๐จ๐ง ๐๐ซ๐จ๐ฉ๐ฌ ๐๐๐๐๐๐ญ๐๐ * Tomatoes (especially early fruit) * Peppers * Squash and zucchini * Eggplant ๐๐จ๐ฐ ๐ญ๐จ ๐๐ซ๐๐ฏ๐๐ง๐ญ ๐๐ฅ๐จ๐ฌ๐ฌ๐จ๐ฆ ๐๐ง๐ ๐๐จ๐ญ ๐ข๐ง ๐๐จ๐ง๐ญ๐๐ข๐ง๐๐ซ๐ฌ ๐. ๐๐๐ญ๐๐ซ ๐๐จ๐ง๐ฌ๐ข๐ฌ๐ญ๐๐ง๐ญ๐ฅ๐ฒ * Keep soil evenly moistโnot too dry or soggy. * Water deeply and regularly, especially during hot or windy weather. * Consider self-watering containers or drip irrigation for steady moisture. ๐. ๐๐ฌ๐ ๐ญ๐ก๐ ๐๐ข๐ ๐ก๐ญ ๐๐จ๐ญ๐ญ๐ข๐ง๐ ๐๐ข๐ฑ * Choose a high-quality potting mix with good drainage and organic matter. * Avoid using straight garden soil or reused mix that may be depleted. ๐. ๐๐๐ ๐๐๐ฅ๐๐ข๐ฎ๐ฆ * Mix in crushed eggshells, bone meal, or garden lime when planting. * Use a balanced liquid fertilizer with calcium if needed. * Foliar sprays can help, but root uptake is more effective long-term. ๐. ๐๐ฏ๐จ๐ข๐ ๐๐ฏ๐๐ซ๐๐๐ซ๐ญ๐ข๐ฅ๐ข๐ณ๐ข๐ง๐ * Too much nitrogen encourages leafy growth at the expense of fruit health. * Use a balanced or low-nitrogen fertilizer designed for fruiting plants. ๐. ๐๐ก๐จ๐จ๐ฌ๐ ๐ญ๐ก๐ ๐๐ข๐ ๐ก๐ญ ๐๐จ๐ง๐ญ๐๐ข๐ง๐๐ซ ๐๐ข๐ณ๐ * larger pots help regulate moisture and reduce stress. * For tomatoes and peppers, aim for containers at least 5 gallons in size.