Growing with Perlite and Perlite/Peat Mixes
As the greening of the world continues, there is an
ongoing trend to utilize container plantings. Not only are these containers used in indoor
and outdoor pedestrian malls, they are used in rooftop gardens over underground garages
and shopping malls, on patios, decks, terraces and in penthouse gardens.
A problem common to all of these applications is weight.
Structural design on the floor, deck, or rooftop is often the limiting factor in so far as
container weight is concerned. This, in turn, limits the depth of growing mix that can be
used which restricts the size of shrub or tree that can be planted.
Lightweight Perlite (100% perlite) or Perlite/Peat Growing
Fully watered perlite/peat moss growing mixes weigh only
about 950 lbs/cubic yard (550 kg/cubic meter), and 100% perlite media weigh even less.
Using the previous example, the same container filled with a perlite/peat moss growing mix
would weigh only about 1700 lbs (770 kg)----less than one ton! This tremendous weight
saving with perlite/peat moss mixes can provide architects, designers, and nurserymen with
a host of additional options including more extensive plantings, larger shrubs and trees, and reduced design loadings for rooftops.
This water holding ability of horticultural perlite also
increases its nutrient holding capacity when water-soluble fertilizers are used. In
addition, horticultural perlite provides aeration to the growing mix which is essential
for optimum plant development.
A further advantage of using lightweight 100 % perlite or
perlite/peat moss growing mixes in containers is that they are easier to move and relocate
and they last longer because they are not subject to stresses and strains induced by heavy
Container planting mixes also may utilize soil in
conjunction with sphagnum peat moss, horticultural perlite and nutrients.
Check with your local garden center or contact our company for further recommendations or suggestions.
Information given herein is from sources considered
reliable, but no guarantee of accuracy can be made or liability assumed. Your
supplier may be able to provide you with more precise data. Certain compositions or
processes involving perlite may be the subject of patents.