Horticultural Vermiculite for Seed Starting & Propagation
Garden Clouds™ is a precision-screened horticultural vermiculite designed to improve soil structure, aeration, and moisture retention in gardening and plant propagation applications.
Vermiculite is widely used by growers because its lightweight, expanded mineral structure creates air pockets within soil mixes while retaining moisture and nutrients where plant roots can access them.
This balance between aeration and water retention makes vermiculite one of the most effective soil amendments for seed starting, cuttings, and potting mix formulation.
Why Vermiculite Quality Matters
Not all vermiculite performs the same.
Many general-purpose vermiculite products are packaged as broad blends containing varying particle sizes. These products are often intended to serve a wide range of basic soil-amendment uses.
Because of this, some products may contain partially expanded material, higher levels of dust (fines), or inconsistent particle distribution. These variations can reduce airflow, create compaction in soil mixes, and lead to less predictable growing conditions in sensitive applications such as seed starting and propagation.
Garden Clouds™ Premium products are engineered for reliable performance:
• Fully exfoliated vermiculite for maximum expansion
• Precision screened particle size for consistent structure
• Application-specific particle fractions and engineered blends
• Clean, low-dust mineral substrate
• Uniform performance in soil blends
This ensures consistent moisture retention and healthy root aeration across horticultural applications.
Common Applications
Garden Clouds™ vermiculite is commonly used for:
• Seed starting trays
• Rooting cuttings and propagation
• Potting mix formulation
• Soil aeration improvement
• Indoor and container gardening
Because vermiculite holds moisture while maintaining air pockets, it helps prevent soil compaction while supporting strong root development.
Engineered Mineral Substrates – Proudly Canadian
Garden Clouds™ vermiculite products are freshly processed in Gananoque, Ontario, in the heart of the Thousand Islands region.
Our products are part of the Garden Clouds™ engineered vermiculite series, designed to deliver consistent mineral substrate performance across horticultural, industrial, and specialty applications.
