Spray the plant with Epsom salts (1 teaspoon dissolved in a spray bottle of warm water (about 4 cups). That gives the pepper plant a boost of magnesium that is required at flowering time to produce fruit. Spray them again 10 days later and in a few weeks, our expert friends report, you will have more peppers than you can eat.
Container Gardening - Choosing a Size Tomato plants grow best in containers of at least 22" diameter, peppers grow best in 16" diameter pots, and vining crops require a 20" or larger container. Lettuce, spinach and other greens have shallow root systems and do well in long, flat containers. Think in terms of 1 to 2 gallon container capacities for peppers, chard and dwarf tomatoes, while 4 to 5 gallons per plant is best for tomatoes, cucumbers, squash, and eggplants.