• Molly's Clay Pebbles 5 quart (5.5 L) bag, 8 to 12 mm, low dust
  • A 5 quart bag of Molly's Clay Pebbles fills about fifteen 4-inch pots
  • Clay pebbles beside a ruler and a quarter, screened to 8 to 12 mm
  • A handful of screened, low-dust clay pebbles
  • Clay pebbles used for rooting cuttings, semi-hydro and hydroponic growing
  • Clay pebbles mixed into potting mix for a custom blend
  • Clay pebbles as a drainage layer at the base of a terrarium
  • Molly's Clay Pebbles resealable stand-up bag
  • Molly's Clay Pebbles bag on a bed of clay pebbles
  • Back of the Molly's Clay Pebbles bag with directions and ingredients
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Molly's Clay Pebbles - Expanded Clay Pebbles (LECA) for Propagation, Semi-Hydro and Drainage Layers, 8-12 mm

Molly's Clay Pebbles - Expanded Clay Pebbles (LECA) for Propagation, Semi-Hydro and Drainage Layers, 8-12 mm

$19.99 USD
$19.99 USD
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  • Soil-free component, 100% single material.

Quick answer: what are Molly's Clay Pebbles?

  • What it is: lightweight expanded clay aggregate (LECA), screened to a consistent 8 to 12 mm and packed low dust.
  • For: semi-hydro growing, water propagation, drainage layers and chunky custom mixes.
  • In the bag: 100% expanded clay pebbles, 5 dry quarts (5.5 L), in a resealable stand-up bag. Fills about fifteen 4-inch pots.
  • Before use: rinse to remove natural dust. Soak them as well if you're setting up semi-hydro.
  • A single component, not a potting mix. For a ready-to-use blend, choose one of Molly's potting mixes.

Better roots start with better structure. Molly's Clay Pebbles are expanded clay pebbles made for indoor plant care. Each bag holds low-dust LECA screened to a consistent 8 to 12 mm, for the open root environment growers want for drainage, aeration and semi-hydro growing.

Use them on their own for semi-hydro or propagation, around orchid roots, as a drainage layer, or as an airy component in a mix you build yourself.

Why growers choose it

  • Consistent 8 to 12 mm, low dust. Screened to remove excess dust and fines, for a clearly stated grade and a predictable particle size.
  • Good value. A 5 quart (5.5 L) bag fills about fifteen standard 4-inch pots. The resealable bag stands up, so it's easy to pour and store.
  • Semi-hydro and propagation. Use them on their own to support cuttings during water propagation, or as a soilless semi-hydro substrate.
  • Custom chunky mixes. Blend with potting mix or other components for aroids, orchids, monstera, philodendron, pothos and alocasia. The pebbles add structure for drainage and airflow.
  • Drainage layer. A porous layer for the base of terrariums and decorative pots.

How to use

  • Rinse before use to remove natural dust.
  • For propagation, set cuttings in rinsed pebbles and keep a little water in the bottom of the container.
  • For semi-hydro, soak the pebbles first and grow in a container with a water reservoir. Semi-hydro plants also need a nutrient solution made for that method.
  • For drainage layers, add a layer at the base of terrariums and decorative pots.
  • For custom mixes, blend them into your own mixes where you want large, light particles.

Specifications

  • Material: 100% expanded clay pebbles
  • Particle size: 8 to 12 mm, screened
  • Bag size: 5 dry quarts (5.5 L), filled by volume
  • Coverage: about fifteen standard 4-inch pots (varies with pot shape and use)
  • Packaging: resealable stand-up bag

Where it fits with Molly's mixes

Molly's potting mixes are ready to use and already blended for air, moisture and drainage, so you don't need to add anything to them. Molly's soil-free components are single materials for growers who want more ways to grow, propagate and customize. For a complete mix, see Molly's Aroid Mix, Molly's Succulent Mix or Molly's Orchid Mix.

Frequently asked questions

Are clay pebbles the same as LECA?
Yes. LECA stands for lightweight expanded clay aggregate. Molly's Clay Pebbles are expanded clay pebbles screened to 8 to 12 mm.
Do I need to rinse them before use?
Yes. Rinse before use to remove natural dust. If you're using them for semi-hydro, soak them as well.
Can I grow a plant in clay pebbles alone?
Yes, in a semi-hydro setup: a container with a water reservoir and a nutrient solution made for semi-hydro. In a regular pot without a reservoir, use a potting mix instead.
Can I mix them into soil?
Yes. Clay pebbles are a common addition to potting mix. They add structure that helps prevent compaction and supports aeration and drainage.
Are they good for orchids?
Yes. Clay pebbles can be used to build an airy, breathable mix for orchids' epiphytic roots.
Can LECA be used in a terrarium?
Yes. Molly's Clay Pebbles can form the base drainage layer in a terrarium.
Can I use them outdoors?
Yes. Use them as a drainage layer in outdoor planters, or as a decorative mulch with an interesting texture and shape.
Are they reusable?
Yes. Clay pebbles are long-lasting and can be reused. Clean them thoroughly before you reuse them with a different plant.
How many pots does a bag fill?
About fifteen standard 4-inch pots. Pot shape and how you use the pebbles change the coverage.
Do I need to add clay pebbles to Molly's mixes?
No. Molly's Aroid, Succulent and Orchid mixes are complete and ready to use. Clay pebbles are for semi-hydro, propagation, drainage layers and mixes you make yourself.

Care and handling: Not for consumption. Keep out of reach of children and pets. Store dry.

WARNING: This product can expose you to chemicals including crystalline silica, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

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