Preventing Blossom End Rot After Heavy Rains

Hey Gardeners! After heavy rain, remember to fertilize garden plants prone to blossom end rot, such as tomatoes, peppers, eggplants, squash, and melons, to replenish leached nutrients. Use an all-purpose fertilizer with an N-P-K ratio like 5-10-10 or 10-20-20 to prioritize potassium and phosphorus for fruit development while keeping nitrogen moderate to avoid excessive foliage growth.

To address calcium deficiency, a key cause of blossom end rot, apply bone meal (organic, ~3-4 tbsp per plant, worked into soil) or calcium nitrate (non-organic, ~1-2 tbsp per gallon of water as a foliar spray or soil drench). Test soil pH and nutrient levels first—ideally with IoT soil sensors or portable testers—to confirm deficiencies, as heavy rain can alter soil chemistry.

Ensure consistent irrigation to aid calcium uptake, using smart irrigation systems if available, as uneven moisture can worsen blossom end rot. For organic growers, crushed eggshells or gypsum are additional calcium sources. Monitor weather and soil data via apps or connected devices to optimize timing and prevent over-fertilization.

Mulch also helps prevent blossom end rot in plants like tomatoes by retaining soil moisture, reducing fluctuations that hinder calcium uptake. It regulates soil temperature, promotes nutrient absorption, and suppresses weeds, ensuring plants access essential nutrients to minimize rot.

Personally I am liking the fine shaved bedding for rabbits. The larger is okay, but takes a lot longer to break down. Straw is good as well, but grass clippings in my opinion might be a bit green or have seeds, anything keeping the roots cooler and consistent watering is better than nothing.

-- Rick Tenison
Master Gardener