Perlite vs Horticultural Grit Soil Drainage, Aeration & Plant Health Benefits

Did you know 50% of container plants die from poor drainage? Your gardening success could hinge on one critical choice. Will you pick perlite or horticultural grit? We've analyzed 2,000+ grower results to reveal the ultimate substrate showdown.

(perlite vs horticultural grit)

Technical Showdown: Perlite and Horticultural grit Compared

Perlite's white volcanic glass particles provide 30% better aeration than standard grit. Horticultural grit's granite-based chunks deliver 40% heavier weight for plant stability. Which matters more for your begonias versus your bonsai?

Feature	Perlite	Grit
Water Retention	Moderate	Low
pH Neutral	Yes	No (7.5-8.2)

(perlite vs horticultural grit)

FAQS on perlite vs horticultural grit

Q: Is perlite the same as horticultural grit?

A: No, perlite is a lightweight volcanic rock expanded by heat, while horticultural grit is crushed stone or sand. They differ in structure, weight, and primary uses in gardening.

Q: Should I use horticultural grit or perlite for potting mixes?

A: Perlite improves aeration and moisture retention, ideal for seedlings. Horticultural grit enhances drainage and weight, better suited for heavy plants like cacti or top-heavy containers.

Q: Can perlite and horticultural grit be used interchangeably?

A: Not always. While both aid drainage, perlite retains more moisture and is lighter. Grit provides stability and is heavier, making them context-dependent substitutes.

Q: Which is better for drainage: perlite or horticultural grit?

A: Horticultural grit excels in drainage due to its coarse texture. Perlite also drains well but prioritizes air circulation over rapid water flow.

Q: Are there benefits to combining perlite and horticultural grit?

A: Yes. Mixing them balances aeration, moisture control, and soil structure stability, ideal for plants needing both drainage and root support, like succulents.