Skip to product information
1 of 1

Greenfall

Vulkastrat 2-8 mm: The Ultimate Volcanic Substrate for Drainage and Root Health

Vulkastrat 2-8 mm: The Ultimate Volcanic Substrate for Drainage and Root Health

Regular price 39,00 kr
Regular price Sale price 39,00 kr
Sale Sold out
Taxes included. Shipping calculated at checkout.

Looking for the perfect substrate for your succulents, cacti, or orchids? Vulkastrat 2-8 mm is the answer. This premium volcanic rock substrate ensures exceptional drainage, prevents overwatering, and promotes healthy root growth. Its 2-8 mm particle size is ideal for improving soil aeration while maintaining a natural look for potted plants.


Why Choose Vulkastrat?

  1. Prevents root rot with superior drainage.
  2. Perfect for drought-tolerant plants like succulents and cacti.
  3. Sustainable and reusable, with 100% natural volcanic material.
  4. Lightweight yet durable, making it easy to handle and long-lasting.

How to Use Vulkastrat:

  • For Potting Mixes: Combine with organic materials for a balanced substrate.
  • As a Drainage Layer: Add to the bottom of pots to improve water flow.
  • For Orchids: Use as a standalone medium for excellent aeration.

Guide: How Much Vulkastrat Do You Need?

Pot Diameter (cm) Approx. Height (cm) Capacity in Liters (L) Recommended Vulkastrat Quantity
10 cm 8-10 cm ~0.5 L 0.5L Vulkastrat
15 cm 12-15 cm ~2 L 1L Vulkastrat
20 cm 18-20 cm ~4.5 L 3L Vulkastrat
25 cm 22-25 cm ~7 L 3L Vulkastrat (with extra)
30 cm 28-30 cm ~12 L Buy 2x 3L Vulkastrat
40 cm 35-40 cm ~30 L Buy 10L Vulkastrat (multiple bags)

How to Use This Guide:

  1. Measure the diameter of your pot at its widest point.
  2. Match it with the table above to determine how much Vulkastrat you’ll need.
  3. For mixed substrates, reduce the quantity by half if combining with organic materials.

Tips for Using Vulkastrat:

  • Use 100% Vulkastrat for succulents, cacti, or plants that need exceptional drainage.
  • As a drainage layer, fill the bottom 10-20% of your pot with Vulkastrat.
  • Add a thin top layer to reduce soil compaction and improve aesthetics.
View full details