As the colder months approach, mulching your garden in the fall becomes crucial, especially in the Pacific Northwest where fluctuating temperatures and heavy rains can be harsh on plants. Mulching acts as a protective barrier, insulating the soil to maintain a stable temperature and retain moisture. This is particularly important for vulnerable plants like roses, which have graft unions that are vulnerable to extreme cold snaps. All plants that are grafted are susceptible to damage in our worst winters, but we can try our best to protect them with mulching.
By applying a thick layer of organic mulch-such as straw, leaves, or wood chips around the base of your plants, you help prevent the extreme temperatures from affecting the graft union. In addition to protecting roses and other shrubs, fall mulching also benefits tender perennials and newly planted shrubs that may struggle with the PNW’s wet winter conditions.
The mulch helps to reduce soil compaction from heavy rains, suppresses weed growth, and gradually decomposes to enrich the soil with organic matter. This added protection not only helps your plants survive the winter but also ensures they emerge stronger and healthier in the spring, ready to thrive in the new growing season.