The invention taught is a method and apparatus to mix a special polymer, hot water or other hot water material containing additives and a special mixture of dry growing substances mixed in a particular way so that they may be applied to structures such as to ceilings, walls, and any grade of vertical slants, commercial roofs, courtyards, indoor and outdoor applications. The purpose is to coat any surface and grow any plant for any reason be it erosion control, beautification of an area. The invention would help in reforestation after fires and such. This invention has a wide range of applications and so it is impossible to limit it to just one of these applications. Green parking lots and green areas that before could not be made green is just one area for the invention.

A sowing unit is provided including water-absorbing material, an enclosure and a seed. The water-absorbing material is vermiculite, which is a hygroscopic negatively-charged material capable of binding a positively charged nutrient ion selected from NH4+, L-arginine, L-lysine and L-histidine. Further, there is least one hole in the water-absorbing material arranged to hold one or more seeds.

A sowing unit is provided including water-absorbing material, an enclosure and a seed. The water-absorbing material is vermiculite, which is a hygroscopic negatively-charged material capable of binding a positively charged nutrient ion selected from NH4+, L-arginine, L-lysine and L-histidine. Further, there is least one hole in the water-absorbing material arranged to hold one or more seeds.

In various embodiments, an apparatus for growing plants is provided. The apparatus may include an irrigation apparatus, an accommodating space for accommodating one or more seed mats, and a controller which is configured to control the irrigation apparatus by a program controller. The irrigation apparatus includes a water circuit system for feeding water to the seed mats. The water circuit system includes at least one inlet, a water tank, at least one water circuit pump and at least one outlet. The irrigation apparatus includes a sensor which is configured to determine a conductance of the fed water.

In various embodiments, an apparatus for growing plants is provided. The apparatus may include an irrigation apparatus, an accommodating space for accommodating one or more seed mats, and a controller which is configured to control the irrigation apparatus by a program controller. The irrigation apparatus includes a water circuit system for feeding water to the seed mats. The water circuit system includes at least one inlet, a water tank, at least one water circuit pump and at least one outlet. The irrigation apparatus includes a sensor which is configured to determine a conductance of the fed water.

A sowing unit including water-absorbing material, an enclosure and a seed, wherein the water-absorbing material includes a hygroscopic negatively-charged material capable of binding a positively charged nutrient ion selected from NH4+, L-arginine, L-lysine and L-histidine; and optionally a nutrient including a positively charged nutrient ion selected from K+, NH4+, L-arginine, L-lysine and L-histidine. Methods and uses of the sowing unit are described.

According to the present invention a composite structure is provided comprising in intimate mixture essentially through the whole composite structure: peat fibers, peat particles, peat agglomerates or mixtures thereof, that have been obtained from horticultural peat by fractionation or by producing from peat fines; and polymer fibers, which composite structure has been heat-treated to bind the polymer fibers to each other and to stabilize the peat fibers, peat particles, peat agglomerates or mixtures thereof in place in the composite structure. In addition, a process is provided for the production of the composite structure.

According to the present invention a composite structure is provided comprising in intimate mixture essentially through the whole composite structure: peat fibers, peat particles, peat agglomerates or mixtures thereof, that have been obtained from horticultural peat by fractionation or by producing from peat fines; and polymer fibers, which composite structure has been heat-treated to bind the polymer fibers to each other and to stabilize the peat fibers, peat particles, peat agglomerates or mixtures thereof in place in the composite structure. In addition, a process is provided for the production of the composite structure.

A method of making a media usable for instance in hydroponics. The method comprising mixing together three components, granulating the mixture and firing the granules formed, the first component is silica sand, the second component is mica granite sand, and the third component is a glass powder, with the firing taking place at a temperature such that the third component melts during firing.

A hydroponics growing medium comprising mineral fibres and an organic binder, the growing median has a Weathered Interlaminar Strength of at least 4 kilopascals and a phenol content of less than or equal to 0.01% by weight.