6 Gallons 1/4 Inch Douglas Fir Bark Fines (24 Dry Quarts)


1/4 Inch Fir Bark Fines are used to amend regular bonsai potting soil and seedling orchid soil. Retains moisture while providing fast drainage. Fir bark is expensive to process but has a longer service life than pine bark because of the thicker particle size. This is commonly found in conifer bonsai soil mixes.

Mix with other ingredients such as lava rock, calcined clay or pumice to create a potting soil specific to your needs. This is not a ready to use complete soil mix. You are purchasing one ingredient only.

Features include…

  • Manufactured in the US.
  • Consistent size, ready to use, no sifting required.
  • No fillers or artificial coloring.
  • Packaging. Our aggregates are professionally packaged in custom 6 mil bags.
  • Minimal dust or sand sized material.

Click the Additional Information tab for more details.

GTIN 00857206008824 SKU: 857206008824 Category:

Additional information

Weight 24 lbs
Dimensions 10 × 20 × 10 in

A mix of browns from light to dark. This product has not been dyed.

Raw Material

Douglas Fir Bark

Country of Origin(COO)

United States

Average Particle Size

1/4 Inch

Minimum Particle Size

1/8th Inch

Maximum Particle Size

3/8ths Inch


Bonsai Jack LLC


6, Dry

Cubic Inches


Cubic Feet



6 – One Gallon bags



Plant Type

Seedling orchids. All bonsai plants.


Dye-free. We comply with State laws which require products containing Pine bark to be treated with a Bifenthrin drench. This helps prevent the spread of invasive species and provides some residual pathogen control for your plant.

Other Applications

General potting soil ingredient to increase acidity and expedite drainage. Plant use only. Do not use for animal bedding.