A growing medium comprising fibrous tree bark and fibrous wood components, wherein the fibers of the growing medium have an average length to width ratio, such that the growing medium has a dry bulk density of about 60 kg/m.sup.3 or lower and wet bulk density of about 120 kg/m.sup.3 or lower.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and provide an expansive soil material. The expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and provide an expansive soil material. The expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

The invention herein provides a composite material suitable for the absorption of moisture in natural outside areas. More particularly, the composite material can be applied to both grassy and non-grassy natural areas to both absorb any excessive, apparent moisture therein and to also enrich the underlying earth of both grassy and non-grassy natural areas.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.