Our Custom Substrate
At Plantwell, we’ve developed a premium custom soil blend designed to help your plants thrive. After testing hundreds of different formulas, combinations and substrate types, we arrived at the perfect balance of ingredients to deliver exceptional growth and long-term plant health.
What's Inside Our Mix
- Black Lava Rock: Provides excellent drainage and prevents water logging.
- Pumice: Adds porosity, oxygenating roots and reducing rot.
- Calcinated Clay: Retains moisture while promoting balanced airflow in the root zone.
- Charcoal: Filter impurities, keeps the mix fresh, and improves overall soil health.
Together, these components create the ideal environment for strong root growth and healthier plants. Unlike standard potting soils that become dense and waterlogged, our lava rock–based formula stays light, fresh, and breathable. The result is a clean, high-performing substrate designed and tested with real plants in mind so yours can truly thrive.
Benefits of growing in Our Substrate
- Improved Root Health: Lightweight, airy structure prevents compaction and encourages deep root growth.
- Balanced Moisture Retention: Holds just the right amount of water while allowing excess to drain away.
- Natural & Sustainable: Mineral-based materials support long-term plant vitality.
- Clean & Attractive: Smooth, uniform appearance elevates pots and planters while discouraging pests common in traditional soils.
- Designed for Plantwell Planters: Engineered to pair seamlessly with our self-watering systems, delivering steady hydration without overwatering.