What is Perlite and how and why is it used in the horticulture?

 Characteristic: Lightweight, white, porous material for amending soils and potting mixes.

Uses of Perlite

Perlite's many uses and beneficial properties include:
¤ Inorganic, inert and sterile.
¤ No known toxicity or fire hazard.
¤ Prevents compaction - improves aeration and drainage.
¤ Does not decompose - lasts for years.
¤ Stimulates root initiation and vigorous growth.
¤ Insulates and minimises temperature fluctuations.
¤ Almost neutral pH.
¤ Holds moisture but does not become soggy.
¤ Free from disease, weeds and insects.

 Main size of expanded perlite as follows

Granular: 0.15-1.18mm,1-3mm,1-6mm,1-8mm,2-4mm,3-6mm,4-8mm

Powder:200mesh

Patio Planting

Horticultural perlite is an ideal material for patio plantings in container boxes, tubs, and ornamental containers. Because a perlite soil mix is so light in weight, handling headaches are reduced as planters filled with a perlite soil mix may be easily moved to rearrange a patio planting display or to protect plants against adverse weather. A suggested soil mix for patio planters is one third horticultural perlite, one third peat moss and one third composted wood product such as bark or shavings, although 100% fine perlite also can be used! Patio plantings in either type of media will require more frequent watering than garden plantings since they tend to dry out faster.

Roofscape Gardening 

For the apartment dweller with a limited outdoor roof garden, perlite can be of enormous benefit. The weight of planting mixes is very important when the strength of the supporting structure must be considered.  As a result, a perlite growing mix can be several times as deep as a conventional soil mix without increasing weight. This enables the rooftop gardener to grow larger trees. shrubs, and plants and to have more extensive gardens.

Soil Conditioning

Perlite improves the texture of heavy silt or clay soils by increasing aeration and drainage. It also minimises the tendency to 'cap' over germinating seeds, and lasts for many years.
Treat difficult seed beds and flower beds by working up to 25% of perlite into the top 5-10cm before sowing.
For trees, shrubs and roses, mix perlite with the soil when back-filling the planting hole, in order to stimulate root growth. Firm the mixture around the roots and water thoroughly.

Capillary Watering, NFT & Hydroponics

Perlite is an inert, sterile, neutral, ultra lightweight aggregate with a very high air and water-holding capacity. Perlite can be sterilised for re-use by steaming, by flame-gun or by treating with any proprietry chemical sterilizer.
For capillary watering use at least 25mm depth of perlite in place of sand or gravel in polythene-lined benches or suitable trays.
For ring culture and low cost commercial production of tomatoes use perlite in a polythene lined trench or channel, and saturate with nutrient solution.

Packing:100L white poly woven bags or jumbo bags
Loading quantity:730Bags in 1*40'HQ,300Bags in 1*20'GP

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