September Tips for nw gardeners



It's Fall Sale time! Fall is an excellent time to plant so get going on your gardening projects with great savings on plants brought in fresh just for fall! 

Many plants are still flowering now and will continue well into fall. Take a peek at 9 Flowers Blooming Now on the blog. 

Now through mid-October you can lift and separate spring-flowering perennials and bulbs. It's also a great time to plant new bulbs for a colorful spring show!


Battling powdery mildew? It's very common here in the PNW, but you can control it. Read more here.

There is still time to plant a fall/winter vegetable garden. Try cold-hardy leafy greens such as kale, Swiss chard, and collards for harvests deep into fall. Plant broccoli and brussels sprouts starts now to overwinter for a spring harvest.

Check our blog category Edible Gardening for helpful posts about all things edible.


As the weather cools, be sure to bring inside any houseplants that have "summered" out of doors. Check carefully for any insects that might be tagging along, and think about keeping the plants separate from other indoor plants until you are sure they are bug free.

Learn more about the Proper Care and Feeding of Indoor Plants.




In September, you can begin fertilizing your lawn. Be sure to water regularly after fertilizing, especially in drier weather.

Don't mow still-dormant sections of lawn. If you are mowing green lawns, use a mid-high-to-high setting on your lawnmower.



Plant Care Library

At Swansons, we’re dedicated to growing the smartest, hippest, and healthiest gardeners in the Pacific Northwest. Below is a library filled with pages on what we grow in Seattle. Just remember, we were all novices once, and no one knows it all. So enjoy, keep learning, and happy gardening!

Looking for more Pacific Northwest gardening resources? Here is a list of our community partners.