Growing peppers. Peppers hate nitrogen/commercial fertilizer. Wait until plants flower before fertilizing. Then spray leaves with 1 tsp of Epsom salt to 1qt of water (peppers need Magnesium to set fruit). Peppers also enjoy small amounts of potassium (wood ashes).
Spray your zucchini plants once a week with a solution of 1 part milk to 9 parts water. You can use any kind of milk available. This will keep your plants from getting powdery mildew, a serious threat to zucchini plants. | eHow
The best way for Self-Watering Use 2-litre bottles with Aqua Cones to keep your plants and flowers watered. Aqua Cones work with any soil type because they were designed with punch-out holes near the top for sandy soil, near the middle for loam, and near the bottom for heavy soils. The Aqua Cones collects rain and stores it so that it can provide continuing water to your thirsty plants.