September Garden Calendar
- September is the time to overseed or reseed cool-season lawns. Be sure to purchase high-quality grass seed. Lower quality seed often has weeds and undesirable perennial grasses.
- For high-quality lawns that are not overseeded, the first and most important application of Fertilome’s Winterizer should be applied sometime after the middle of the month.
- Hi-Yield’s Turf and Ornamental Weed and Grass Stopper should be applied now to control henbit, chickweed, and little barley grass. Don’t use in areas that are going to be overseeded.
Gardens and Pests
- Fall vegetable gardens are often very successful. Some crops include broccoli, cabbage, and cauliflower (you’ll want larger plants, seeds will be too slow.) spinach, lettuce, and root vegetables such as beets, turnips, and radishes.
- Consider adding fall-blooming perennials to a foundation planting or butterfly gardens. Mums and asters are good options.
- Feed both vegetables and flowers for that late push before a frost.
- Tired annual planters can be replaced with cool-season annuals such as pansies, ornamental kale, and even evergreens to give them new life.
Trees and Shrubs
- Mid to late September begins one of the best times of the year to plant trees and shrubs.
- Continue to water trees and shrubs deeply and infrequently. Evergreens need to be well hydrated going into the winter.
- Many trees and shrubs can be trimmed now, but be cautious about trimming spring-blooming trees and shrubs such as forsythias and lilacs since you’ll be cutting off next year’s buds.