Trees and shrubs should be fertilized annually during the early years of growth. As plants mature, fertilization can be reduced to every 2 to 3 years. Trees that are grown in turf areas often receive enough nutrients from the turf fertilization and may not require additional fertilization. Fertilize in late fall or early spring using a well-balanced fertilizer containing micronutrients. Use an acidifying fertilizer for shrubs that prefer a lower pH. This will be listed on the label.
Perennials should be fertilized twice in the spring – once in late March/early April and again 6-8 weeks later. Use a well-balanced granular fertilizer and cultivate into the soil around the plants.
Groundcover should be fertilized monthly with a liquid general purpose fertilizer during the first year to encourage establishment and growth. Once a groundcover is established, fertilize annually.
To keep annual flowers blooming, fertilize bimonthly for the entire growing season using a liquid general purpose fertilizer containing micronutrients.