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Rootblast International

Professional Gardening Medium

By using your own mix with Rootblast, you can start with a known entity, controlled pH, salt levels, moisture holding capacity, drainage ability and balanced nutrient levels. The four ingredients for Rootblast growing mix are peat moss, vermiculite, perlite and Rootblast.

Virtually everyone who has used the growing medium with Rootblast has written or called to praise its ability to reduce shock, its creation of a faster take off of the newly planted material, and especially the low maintenance required.

Mixing Instructions

Note: If using the Rootblast mix to germinate seeds indoors, do not use perlite. Instead substitute the same quantity of vermiculite in its place.

On a clean surface (piece of plywood, plastic drop cloth or wheel barrow):

  1. Open peat bale and loosen peat moss.
  2. Evenly spread vermiculite, perlite and Rootblast over peat.
  3. Mix very thoroughly with a garden rake.
  4. Moisten with water and mix in (this step is optional).

Note: If you choose to complete step #4 the mix should “just” stick together when a handful is squeezed. If it doesn’t, mix more thoroughly and “carefully” add a little more water.

Quantities based on Sphagnum peat moss bale sizes (compressed bales). Available at your local discounter or garden center:

Peat Moss I peck 3 peck 1 cu. ft. 2.2. cu. ft. 3.8 cu. ft. 6 cu. ft.
Vermiculite 2 qts 4.5 qts 10 qts 21 qts 37 qts 60 qts
Perlite 1 qt. 1.5 qts. 3 qts. 7 qts 12 qt.s 20 qts.
RootBlast 3.5 TB/
(2 oz.)
8 TB/
4.5 oz.)
18 TB/
(10 oz.)
40 TB/
(22 oz.)
68 TB/
(38 oz.)
108 TB/
(60 oz.)
Total Yield .5 cu. ft. 1.2 cu. ft. 2.5 cu. ft. 5.5 cu. ft. 9.5 cu. ft. 15 cu. ft.

* Measure Rootblast 1.8 tablespoons (TB) per ounce. All quarts are U.S. quarts.
** 1 peck = 8 quarts

If you are an experienced grower and use your own mix, you will need about 4 oz. of Rootblast per cubic foot of mix.

Your growing medium with Rootblast (made as directed), is a perfectly balanced formula to promote extremely fast root development. You may also use this growing medium for all your indoor and outdoor planting needs.

Note: If using the Rootblast mix to germinate seeds indoors, do not use perlite. Instead substitute the same quantity of vermiculite in its place.