Bark
Also known as: bark mulch, fir bark, cedar bark, redwood bark
Bark is the outer covering of trees, processed into mulch in sizes from fine to large nuggets. Fir, cedar and redwood barks are popular for their longevity, color and pleasant appearance in planting beds.
In simple terms
Bark is the wood mulch most people picture — the chunky or shredded covering you spread in beds. It comes from different trees and in different sizes, from fine to big nuggets, each with its own look and lifespan.
In depth
Bark products vary by species and grind. Fir and redwood barks resist decay and hold color well; cedar adds aroma and natural pest resistance; shredded barks knit together and stay put on slopes, while nuggets resist compaction and last longer but can float in heavy rain. Larger nuggets break down slowest; fine bark breaks down fastest and feeds soil sooner. Dyed barks add lasting color. Bark is applied 2–3 inches deep like other mulch, kept back from trunks.
Why it matters
Bark is the workhorse mulch for the region — it conserves water, suppresses weeds and finishes beds attractively, with species and sizes to match slopes, color goals and budgets.
Common mistakes
- Using large nuggets on slopes or near downspouts where they float and wash away.
- Choosing fine bark where longevity matters, then needing to replace it sooner.
Examples & uses
- Shredded bark on slopes (knits together, resists washout).
- Nuggets in flat beds for a clean, long-lasting look.
- Cedar bark where aroma and pest resistance are valued.