GrowPharm Orchid Media - Medium Fir Bark

Best For Thick-Rooted Orchids

Medium Fir Bark – Maximum Airflow for Strong Orchid Roots

GrowPharm Medium Fir Bark is a classic orchid growing media designed for maximum drainage, airflow, and root stability.

This is the go-to choice for growers working with mature or thick-rooted orchids that need space to breathe—not sit in moisture.

Best For These Orchid Types:

• Cattleya
• Dendrobium
• Large Phalaenopsis (established plants)
• Oncidium (mature plants)
• Other thick-rooted or older orchids

Not recommended for: fine-rooted orchids like Paphiopedilum or Miltoniopsis (they will dry out too fast).

Why This Works:

• Fast Drainage – Water moves through quickly, reducing rot risk
• High Airflow – Roots stay oxygen-rich and active
• Natural Root Environment – Mimics how orchids grow on trees in the wild

What’s Inside:

• Medium Fir Bark (BC-Sourced) – Reclaimed from the forestry industry

How to Use:

1. Soak Before Use – 2–24 hours
2. Drain Thoroughly – Bark should be moist, not wet
3. Repot Loosely – Do not compact; roots need airflow

Product Highlights:

• Dry packaged for long shelf life
• Simple, adjustable base media
• Perfect for custom blends

This is your foundation media.
Use it straight, or dial it in exactly how you want.

Custom Mix Potential:

• Add sphagnum moss → increase moisture retention
• Add perlite → increase drainage
• Add charcoal → cleaner root zone

Also Great For:

• Aroids (Monstera, Philodendron, Anthurium)
• Bromeliads & epiphytes
• Bioactive substrates / terrariums
• Improving drainage in dense soils

Why Orchids Need Bark:

Orchids don’t grow in soil—they grow attached to trees. Their roots are exposed to air, quick rain, and rapid drying cycles.

Fir bark replicates this environment by holding just enough moisture while allowing constant airflow, which helps:

• Reduce root rot
• Improve nutrient uptake
• Support consistent flowering cycles

Bark Origin:

This fir bark is a by-product of the British Columbia logging industry—not the reason trees are harvested.

It is heat-treated to eliminate pests and pathogens, then packaged in Alberta.

Simple, effective, and responsibly sourced.