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At Groindoor.com, you can find perlite soil from some of the industry’s leading brands, including GROW!T, Roots Organics and Fox Farm.

What is perlite?

Perlite are the tiny white particles that can be seen in many potting soils. Many new growers don’t know their exact use, nor do they know that it doesn’t exactly qualify as a growing medium.

Purpose of perlite

Perlite, like coco coir, has a neutral pH. It is very useful in increasing drainage, aiding aeration, and reducing compaction when you add it to potting soil. It isn’t renewable, but it is definitely reusable. Unlike rockwool and clay pebbles, perlite does not absorb nutrients. This allows growers to simply sterilize it and use it again in a fresh grow medium.

Perlite works well with both hydroponic and traditional soil growing. It increases a plant’s ability to absorb water and oxygen. You can use its compaction ability to prevent nutrient lockouts providing added protection to the roots.

How to make perlite soil?

On its own, perlite doesn’t exactly qualify as soil. You can make perlite soil by purchasing a potting soil and mixing it with perlite. Given its ability to increase aeration, drainage and reduce compaction, growers recommend using perlite with numerous garden soils or hydroponic systems. You can learn more about making your own soil by giving our super soil recipe a read.

You can also check out our detailed article on the best garden soils at our learning center to increase your gardening knowledge.

How much perlite should be added to the soil?

The answer to this question depends on the type of soil you are using. As a general rule, perlite concentration can be anywhere between 10% and 40% of the total soil volume. For better water retention, 10-20% perlite is ideal. If you feel like the soil has started to retain more water than needed, simply add more perlite.

Vermiculite vs perlite

Vermiculite is a great alternative for perlite. It offers better water retention and is as good as perlite at aeration, making it a very popular seed-starter medium. Our blog on vermiculite vs. perlite can help you increase your knowledge-base on the topic.

For more info on grow media, give our expert growers a call at 866-GRO-INDR

  • GROWIT Super Coarse Perlite, 100L/3.53 cu. ft. Bag - Pack of 1 GROWIT Super Coarse Perlite, 100L/3.53 cu. ft. Bag - Pack of 1

    GROWIT Super Coarse Perlite, 100L/3.53 cu. ft. Bag - Pack of 1

    Perlite is a unique volcanic mineral which expands from four to twenty times its original volume when it is heated. Perlite can reach temperatures of approximately 1600-1700 degrees F. The media's expansion is due to the presence of two to six percent...

    $53.95 $35.44
  • Perlite #3, 4 cu.ft. bag

    Perlite #3, 4 cu.ft. bag

    Perlite #3 features large coarse particles which maximize nutrient uptake, drainage, and aeration and help prevent water rot at the root level. Perlite #3 can be used as a stand-alone medium in drip systems or as a mix-in element with other growth...

    $51.95 $32.69
  • Perlite #2, 4 cu.ft. bag

    Perlite #2, 4 cu.ft. bag

    Perlite #2 is the most commonly used Perlite in the horticulture industry because it works great in the propagation of seedlings, is well suited as a mix-in element with other growth mediums, and it enhances drainage and aeration of plants while reducing...

    $49.95 $31.47
  • Perlite #8 X-Large & Bulky 4 cu.ft. bag

    Perlite #8 X-Large & Bulky 4 cu.ft. bag

    No 8 Perlite features EXTRA LARGE and BULKY coarse particles which maximize nutrient uptake, drainage, and aeration and help prevent water rot at the root level. Perlite can be used as a stand-alone medium in drip systems or as a mix-in element with...

    $59.49 $43.00
  • Vermiculite Premium Grade 12 Qt. Bag

    Vermiculite Premium Grade 12 Qt. Bag

    Horticultural Vermiculite provides numerous benefits by improving moisture retention and soil aeration. These properties make it ideal for seed germination, root cuttings, and soil amending. A valuable growing medium for small area gardening and...

    $37.45 $23.60
  • SALE
    GROW!T #3 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1 GROW!T #3 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1

    GROW!T #3 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1

    GROW!T #3 Perlite, Super CoarseGROW!T Perlite is a versatile and inert soil amendment and soilless medium. Use it to aerate soil in container gardening, for germination and propagation of seedlings, for propagation of cuttings, and as a hydroponic...

    $47.95 $10.00
  • SALE
    GROW!T #2 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1 GROW!T #2 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1

    GROW!T #2 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1

    GROW!T #2 Perlite, Super CoarseGROW!T Perlite is a versatile and inert soil amendment and soilless medium. Use it to aerate soil in container gardening, for germination and propagation of seedlings, for propagation of cuttings, and as a hydroponic...

    $49.95 $10.00
  • GROW!T #8 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1 GROW!T #8 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1

    GROW!T #8 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1

    GROW!T Perlite is a versatile and inert soil amendment and soilless medium. Use it to aerate soil in container gardening, for germination and propagation of seedlings, for propagation of cuttings, and as a hydroponic medium. Hydrofarm searched globally...

    $65.95 $51.36
  • GROW!T #4 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1 GROW!T #4 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1

    GROW!T #4 Perlite, Super Coarse, 4 Cubic Feet - Pack of 1

    GROW!T Perlite is a versatile and inert soil amendment and soilless medium. Use it to aerate soil in container gardening, for germination and propagation of seedlings, for propagation of cuttings, and as a hydroponic medium. Hydrofarm searched globally...

    $60.95 $48.43

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