STSI-Specialist Tree & Shrub Soil Improver:
This is our technically advanced peat-free substrate alternative to sphagnum moss peat. Its own unique structure enables it to absorb moisture at a rate of 8-9 times its own dry packed weight, thus dispensing with the need to include wetting agents into the product itself. It has been specifically produced by ENVIRO MULCH for the Tree and Shrub planting industry and user.

ECONOMICAL & ECO-FRIENDLY:
STSI  is a naturally and organically grown product from a highly sustainable source and because it is grown above ground there are no issues with bacterial infection. Similarly, STSI contains no harmful pathogens.

STSI is our own special blend of new and aged 100% Coconut Coir fibre medium, processed through ½” mesh and compressed at 2.5:1 into printed heavy gauge LDPE bales. Using the product in this form allows for its immediate use in situ, instead of the need to apply additional breaking up and hydration of a higher compressed content.
15kgs Bales (when packed) offering up to 175 litres of expanded product when hydrated with water. Bale size: (45cm x 32 cm x 52 cm approx)
See also our recommended and specially developed nutrient additive: ENVIRO-COTE

USE:
Unlike other Tree/Shrub Planting composts, which are very heavy in weight and are produced to effectively replace the existing growing medium surrounding the Tree/Shrub, STSI is designed to be used as a valuable support product to the planting operation and should be mixed with the native backfill substrate at a rate of 40:60 (40% STSI)per planting hole*, where it will help to not only condition & improve the current soil structure & properties, but it will assist with faster development of essential root growth. The natural and organic properties of STSI enable it to work extremely well with mycorrhiza, a friendly funghi that are present in all woodland soils and are typically added in the planting process as their presence greatly helps to increase nutrient uptake and enhancement of the root systems.
*variable subject to prevailing soil conditions

• STSI may also be used as a general soil conditioner and improver.
• In the construction of golfing greens, public planting of parks & gardens.
• As a Growing medium in the mushroom industry
• In Hydro-seeding mixes