Which native trees are good to plant in the Pacific Northwest for wildlife habitat and long-term carbon storage?

For the Pacific Northwest, focusing on native species is the best way to support local biodiversity and ensure long-term resilience. Here are several excellent choices that provide significant wildlife habitat and carbon sequestration potential:

1. Western Redcedar (Thuja plicata)

• Carbon Storage: One of the most long-lived and massive trees in the region, making it a powerhouse for long-term carbon sequestration.
• Wildlife: Provides dense cover and thermal protection for birds and small mammals, especially during winter months.

2. Douglas-fir (Pseudotsuga menziesii)

• Carbon Storage: Grows rapidly and reaches immense sizes, sequestering significant amounts of carbon over its long lifespan.
• Wildlife: Its seeds are a vital food source for squirrels, chipmunks, and various birds like chickadees and nuthatches. Older trees provide essential nesting sites for raptors.

3. Oregon White Oak (Quercus garryana)

• Carbon Storage: While slower-growing than conifers, these trees are incredibly durable and can live for hundreds of years, storing carbon safely in their dense wood.
• Wildlife: This is a "keystone species." It supports an immense variety of insects, which in turn feed songbirds. Its acorns are a primary food source for deer, woodpeckers, and jays.

4. Pacific Madrone (Arbutus menziesii)

• Carbon Storage: These trees have dense wood and contribute to the structural complexity of a carbon-rich forest ecosystem.
• Wildlife: The berries are a critical food source for migrating birds (like cedar waxwings and robins) in late autumn and winter. The peeling bark and hollows in older trees provide excellent shelter for many species.

5. Western Hemlock (Tsuga heterophylla)

• Carbon Storage: Highly shade-tolerant, allowing it to grow in dense, multi-layered forests that store carbon efficiently in both biomass and soil.
• Wildlife: Provides crucial nesting habitat and protection from predators for many forest-dwelling birds.

Tips for Planting

• Site Suitability: Always check the specific moisture and soil conditions of your planting site. For example, Western Redcedars prefer moist, shaded areas, while Oregon White Oaks thrive in well-drained, sunny locations.
• Diversity: Planting a mix of these species creates a multi-storied canopy, which offers the most significant benefits for both local wildlife and carbon storage.
• Source: Purchase saplings from local nurseries that specialize in native plants to ensure you are getting genetic stock adapted to your specific microclimate.

If you are planning a planting project, your local conservation district or the Washington/Oregon State University extension offices can provide specific guidance for your county.