Coarse perlite 8.5 L
Coarse expanded volcanic glass, 5–15 mm: air to the roots without holding water.
Coarse perlite is the grade that actually works in aroid mixes: the fine stuff packs down and does the opposite of what it is there for. At 5 to 15 mm the air pockets stay open months later, and the substrate does not compact under its own weight.
It is 100% expanded volcanic glass, made in Europe: inert, pH-neutral and sterile. Inert means it takes no part — it releases nothing, binds nothing, degrades into nothing — which is exactly what you want from something whose job is structure.
It is the component that rescues a mix from being too heavy, and on its own it works well as a rooting medium.
Sizes and prices
- 8.5 L bag — €17.95
Specifications
- Composition
- 100% expanded volcanic glass
- Grade
- 5–15 mm
- Origin
- Europe, made exclusively for PlantScraper
- Properties
- Inert, pH-neutral, sterile
- Water retention
- Minimal
- Volume
- Resealable 8.5-litre bag
- Typical use
- 20–50% in aroid mixes
How to use it
Dampen it before mixing: dry, it throws up dust, and perlite dust is not something to breathe. On its own it roots cuttings; in a mix it corrects a substrate that holds too much.
Used with
- Anti-spiralling aroid pot — Ø 18 × 20 cm · 3 L €3.95
- Premium aroid mix 8.5 L — Essential · 8.5 L €19.95
Part of
- Aroid repotting set — €37.68