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Having exfoliated perlite for over 45 years, Therm-O-Rock has decades of experience in creating high-grade growing media used in Horticulture around the world.

Therm-O-Rock’s wide variety of growing mixes provide a superb level of aeration and mosture retention when mixed with other soils.

Find a custom-blended growing media that meets your specific growing needs today.

Keep up with industry trends and hard goods specials!

Download our latest Catalog to see the variety of items we offer.