Bark
Bark is the outermost layer of woody stems and roots of trees and woody shrubs, comprising multiple tissue layers including the outer bark (rhytidome) and inner bark (phloem). As the primary raw material for barkdust production, bark quality, species source, and processing method directly determine the characteristics of the final mulch product. Different species produce bark with distinct textures, decomposition rates, oil content, and horticultural properties. This collection covers bark biology, species-specific bark characteristics relevant to barkdust production, the debarking process, and how bark source affects mulch performance in landscape applications.
Reference Notes
- Douglas fir bark is the most commonly used species for barkdust production in the Pacific Northwest due to its availability and texture.
- Bark contains tannins and resins that slow decomposition — this is why bark mulch persists longer in the landscape than wood chip mulch.
- Cedar bark contains natural oils that act as an insect repellent — making it a preferred mulch for ornamental beds where pest management is a priority.
Bark Guides
Guides coming soon — check back shortly.
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