- Lawns – fertilize; overseed bare or thin spots. This is also a good time to aerate the lawn. If you aerate, do this before overseeding.
- September is a good time for planting new plants or dividing large perennials. It is essential that these new plants have several weeks of water before turning off the irrigation system.
- After Labor Day, spread a black plastic mesh over your water feature to reduce the amount of leaves and needles that may fall into it.
- Rake up leaves and needles.
- Cut the lawn shorter; this help to prevent snow mold. You may need to accomplish this over a couple of weeks. You do not want to remove more than 1/3 of the height in a single mow.
- Cut back assertive perennials.
- Mulch tender perennials with leaves or compost.
- Ensure irrigation system has been winterized. A licensed landscape contractor is required in Oregon.
- Remove fuel from small engines or replace the carburetor in the spring.
- Put away garden furniture