Perlite

Perlite is a lightweight, volcanic glass used in horticulture to improve drainage and aeration in growing media.

Also called / Category:

Expanded perlite, volcanic glass / Environment, Media & Nutrition

Key takeaways:

• Perlite is commonly used in cannabis cultivation for its drainage properties.
• It is sterile and pH-neutral, making it a safe choice for growing media.
• Perlite helps prevent soil compaction, promoting healthy root growth.
• It is often mixed with other substrates like peat moss or coir.
• Perlite does not decompose, offering long-term benefits in soil mixes.

What it is / How it shows up:

Perlite appears in gardening centres and cannabis cultivation stores as a white, granular material. It is often found as a key ingredient in potting mixes or sold separately for gardeners to mix with other media. In cannabis cultivation, perlite is valued for improving aeration and drainage in soil mixes, aiding in the prevention of root rot and enhancing nutrient uptake. Its lightweight nature and ability to hold moisture make it ideal for various growing methods, including offset-4 transition-colors hover:underline" title="Learn more about Aeroponics">aeroponics and hydroponics.

How it’s measured or identified:

• Visually identified by its white, lightweight granules.
• Measured by volume or weight when mixing with other media.
• Available in various grades based on particle size.

Use in context:

• "Mixing perlite with soil improves drainage for cannabis plants."
• "Perlite is excellent for hydroponic systems due to its inert properties."
• "Add perlite to your potting mix for better root aeration."

Safety & compliance in Canada:

• Perlite is safe and non-toxic, with no specific regulations for use in cannabis cultivation.
• Ensure proper ventilation when handling perlite to avoid inhaling dust.
• Dispose of used perlite responsibly, as it is non-biodegradable.

Related terms / See also:

• Aeroponics
• Beneficial microbes
• Auto-flower
• Aphids
• Apical meristem

FAQs:

• What is perlite used for in cannabis growing? Perlite is used to improve soil drainage and aeration, helping to prevent root rot and enhance nutrient absorption.
• Is perlite the same as vermiculite? No, perlite is a volcanic glass, while vermiculite is a mineral that expands when heated. They have different properties and uses in gardening.

Sources:

• Health Canada
• PubChem
• Gardening Resources