Terracotta pot filled with lava granulate on a white background

Brown lava granulate next to a brown paper bag on a white background

Pile of brown lava granulate on a white background

Lava Rock Granules

Lava Rock Granules are durable mineral pieces for weight, drainage texture and long-term structure in custom mixes. Rinse before use to remove dust.

Read full guide to Lava Rock Granules

€6,75

VAT included · plus

Size:

1 liter

Variant

4.6/5 store rating · 20,000+ customers served

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Tracked shipping

Lava Rock Granules – durable mineral structure for custom mixes

Lava Rock Granules bring physical weight and long-lasting pore structure to potting recipes. They are especially useful in mixes that otherwise rely heavily on soft organic matter or very light perlite.

Practical use

Mineral stability: keeps structure longer than many organic pieces
Pot weight: helps anchor top-heavy plants
Texture: creates gritty spaces through the mix
Rinse first: removes loose dust before potting

More to know

A small mineral fraction can make a tall plant more stable and help the root zone resist compaction. The granules do not supply the moisture buffering of coir or the organic texture of bark, so they work best in blends.

How to use it

A grittier mix can still stay wet in a cold room or oversized pot. Check the full pot, not only the dry-looking top layer.

How to use Lava Rock Granules

Mineral weight: Adds durable structure and weight so pots stay stable.
Air pockets: Keeps mixes open over time because it does not break down.
Mixing: Works well as part of chunky mixes for thicker roots.

Prep and handling for Lava Rock Granules

Rinse: A quick rinse removes fines so water moves evenly through the mix.

Lava Rock Granules

€6,75

Lava Rock Granules FAQs

What do Lava Rock Granules do in substrate?

Lava Rock Granules add durable mineral structure, weight and drainage texture. They help keep mixes open and stable for longer.

Can I use Lava Rock Granules as a top dressing?

Yes. A thin layer can give a clean mineral finish and reduce surface splash, but it should not hide moisture problems underneath.

Are Lava Rock Granules good for every plant?

Not in large amounts. Fine-rooted moisture-loving plants may need softer moisture contact, while succulents, bonsai and chunky custom mixes often benefit more.

Flatlay of various inert substrates on a white surface: LECA, pumice, Mapito, perlite, Pon, vermiculite, zeolite, Seramis, and lava rock.

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Everything arrived in good condition and very well packed - it wasn't easy with a fragile plant and a heavy bag of substrate. I recommend it!

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