Pine bark stays for a long time in the garden, unlike the other organic mulches. The natural bark of pine stays longer than any other wood in the yard.
Bark (botany) - Wikipedia
Forest microbiome and global change
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40 Types of Pine Trees With Identifying Facts
Choosing the Right Soilless Potting Mix - FineGardening
Pine Bark Soil Conditioner – Pandy's Garden Center
Pine Bark: 10mm - Parklea Sand and Soil
Pickup Only. Fine Pine Bark Soil Conditioner is used when planting trees, shrubs, roses, plants and more to add with drainage issues. Amend and loosen
Pine Bark Soil Conditioner
PINE BARK FINES – Landscapers Corner
What's the oldest tree on Earth—and will it survive climate change?