1–3 cm (0.4–1.2 in)
Drainage Pebbles
Extra-large clay pebbles that keep water moving and roots breathing. A lightweight, inert drainage layer that never compacts, never rots, and never needs replacing. The 1–3 cm grade leaves big, open air gaps at the bottom of your pot — excess water drains fast and roots never sit in a puddle.
- ✓Extra-large 1–3 cm grade — bigger air gaps, faster drainage
- ✓Pre-screened at the factory — no dust cloud
- ✓Kiln-fired and inert — never compacts, never rots
- ✓300 kg/m³ density — half the weight of gravel
- ✓Landscape-grade: paths, drainage trenches, planter boxes
Specifications
- Particle size
- 1–3 cm (0.4–1.2 in)
- Material
- 100% expanded clay
- Kiln-fired
- ~1,200 °C (2,190 °F)
- Bulk density
- ~300 kg/m³ — lightweight
- Dust
- Pre-screened — use straight from the bag
- Reuse
- Yes — inert and long-lasting
Common questions
Do I need to wash the pebbles before use?+
No. We pre-screen every batch at the factory to remove dust and fine particles, so you can pour them straight from the bag. A quick rinse never hurts if you want to be thorough.
Can I reuse them?+
Yes. Clay pebbles are inert and kiln-fired, so they don't break down or rot. Rinse them between uses and they'll last for years.
Are they safe for plants and pets?+
Yes. The pebbles are 100% expanded clay with no additives, coatings, or organic matter. They release nothing into soil or water.
How deep should the drainage layer be?+
About 2 in (5 cm) for most pots — up to 3 in for very large or deep containers. See our drainage guide in Learn for a full sizing table.
Can I mix these into soil instead of a bottom layer?+
Yes — mixed into heavy or clay garden soil they improve aeration and help prevent compaction. Use about 10–20% pebbles by volume.
Do you offer wholesale pricing?+
Yes — for pallet and container quantities, message us on WhatsApp or email and we'll quote factory-direct rates.
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View Hydroponic Grow Pebbles →