Know what your plants should look like. Be willing to remove plants with chronic problems. For example, azaleas grown in full sun often have severe lacebug problems. Replace problem plants with plants adapted to your area. Check gardening references and reputable local nurseries and greenhouses for ideas.
Healthy soils lead to healthy plants.
Here are some soil-building tips. Incorporate organic matter like compost or manures in flower and vegetable beds regularly. Perform a soil test every three years and adjust the pH accordingly. Fertilize as needed to maintain vigor. Avoid overfertilizing the soil, which can make plants more susceptible to pest problems.