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Why Are My Peppers Bitter and Mild?

Bitterness and lack of heat in Anaheims and jalapeños usually stem from:

Excessive rain leaching soil nutrients.
Cool temperatures during fruit set.
Poor soil fertility—low phosphorus/potassium.

Test your soil (kits at garden centers). Target pH ~7.0 and high nutrient levels. Amend heavily with peat moss, aged manure, compost, shredded leaves, and humus. Organic matter improves tilth, fertility, and disease resistance.

Dry, hot conditions produce the best flavor and heat.

Growing Vegetables: Troubleshooting Brown, Drying Leaves on Yellow Holly Bushes; Neutralizing Cayenne Pepper in Garden Soil: Organic Matter, Charcoal, and Flooding; Does Horse Manure Cause Soil Compaction? Understanding Organic Matter Breakdown; Three-Year Jalapeño Producing Bell-Shaped Fruit: Age and Genetics; Vegetable Soil pH Chart and Adjustment Basics; Upside-Down Pepper Planters Fail: Switch to Upright Containers; Mild Jalapenos: Soil pH Too High, Add Sulfur; Ideal Soil for Jalapeño Peppers in Southern California; Pepper Fruit Rot in Square Foot Gardens: Drainage and Disease; Black Streaks on Jalapeños: Chemical Burn or Disease?

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