Hoffman Horticultural Perlite | 18qt

Lightweight Mineral Soil Conditioner for Drainage, 18qt

Dense clay soil that stays soggy can lead to root rot before seedlings even get established. Hoffman Horticultural Perlite is a lightweight white soil conditioner that loosens clay soil, reduces caking, and improves drainage and aeration, suited to seed starting, cutting propagation, and bulb storage.

18qt, lightweight white mineral soil conditioner.

Key Features & Benefits

• Lightweight white mineral soil conditioner — loosens clay soil and reduces caking.
• Improves drainage and aeration — opposite function to vermiculite's water retention, for balancing a mix.
• Useful across seed starting, cutting propagation, and bulb storage tasks — one bag serves several stages of a growing season.
• Blends with peat moss and vermiculite — for building a custom soilless mix.

Who Should Use Hoffman Horticultural Perlite

This fits gardeners and propagators working with dense or clay-heavy soil who want better drainage and aeration for seed starting, rooting cuttings, or storing bulbs.

About Hoffman Horticultural Products

Perlite is part of Hoffman's horticultural soil amendment line, built around mineral-based products for custom soil and soilless mix blending.

Frequently Asked Questions

How and when should perlite be used?

Mix it into potting soil before starting seeds, propagating cuttings, or storing bulbs, since its drainage and aeration benefits matter most where soggy conditions could cause rot. It can also be worked into an existing mix that's draining too slowly.

What does perlite do for clay or dense soil?

As a lightweight soil conditioner, it loosens clay soil and reduces caking, opening up dense soil so water and air can move through more freely rather than pooling at the surface. That looser structure helps roots push through soil that would otherwise compact around them.

How does perlite differ from vermiculite in a soil mix?

Perlite improves drainage and aeration, while vermiculite (also part of Hoffman's line) focuses more on water retention — combining both with peat moss lets growers dial in a custom soilless mix balanced for their specific needs rather than relying on one mineral alone. Growers in wetter climates often lean more heavily on perlite for that reason.

Can perlite be used for anything besides starting seeds?

Yes — beyond seed starting, Hoffman's own description covers using perlite for propagating cuttings and storing bulbs as well. Keeping a bag on hand covers several stages of a growing season instead of buying a separate soil additive for each task.