A substantially rectangular and open bottom shield configured to be fitted around an in-ground plant at ground level as enabled by an elongated slit and central aperture. A peripheral wall perpendicular to an opaque top panel extends downward around at least 75% of the perimeter of the top panel. The top panel is inclined toward the central aperture through which water and fertilizer can flow toward the plant root system.

A water-saving device comprising a hollow frusto-conical housing having a wide lower end adapted to overlie a ground surface and a narrow upper end. A flexible tarp is integrally connected around the circumference of the narrow upper end of the housing, and a draw string is integrally attached around the circumference of a upper end of the flexible tarp. The draw string is pulled taught to reduce the circumference of the upper end of the flexible tarp and enclose the tarp around the tree trunk.

A new plant growing assist device, comprising a container, a separator in the middle of the container dividing it into upper part to keep the soil for planting, and lower part to act as a water reservoir, the bottom of the container is provided with a snorkel, around the said snorkel there is a buckle which used to connect it with raw water pipe. The device utilizes the reflux of the natural rainfall water and the vapor of the earth surface; it can effectively save irrigation water, ensures the survival of trees planted in the desert, and reduces the cost of desertification control. The several through holes of the separator ensure proper ventilation; the monitoring window makes it possible to observe the water level inside the water reservoir, the top of the container is covered to prevent water evaporation, out-extending holes are provided to allow the roots to extend outside.

The invention provides components, structures, methods, and assemblies for applying feeding materials to plants. The invention may include a permeable structure constructed of a woven material incorporating nutrient-rich material (such as compost, fertilizers, soil amendments, soil supplements, or other material). The structure may be substantially closed around the edges and allow for the flow of water and other material therethrough to plants and surrounding vegetation.

A daylight redirecting window film formed by a flexible multi-layer film laminate with a total thickness of less than one millimeter and configured to be applied to an indoor-facing window surface of a building facade. The window film includes a pair of outer film substrates flanking a light redirecting core layer. The core layer includes a parallel array of channels defining total internal reflection (TIR) surfaces and linear optically transmissive structures protruding transversely thought the core layer and bonded to the outer film substrates. A light output surface of the outer film substrate which is disposed on an indoor-facing side of the laminate includes a two-dimensional pattern of light scattering microstructures which are configured to spread light at least in a plane that is perpendicular to the channels. The TIR surfaces intercept and reflect a portion of sunlight propagating through the core layer such that the window film redirects that portion of incident sunlight towards a plurality of divergent directions, forming relatively high bend angles.

A plant root management and protection system configured for embedding within a dug pit, the system comprising: a sidewall peripherally defining a receiving internal cavity and having (i) a top opening dimensioned to receive a root ball of a plant therethrough, and (ii) a bottom opening defined by a peripheral edge of the sidewall; and at least one root-guiding extension extending outwardly from the sidewall and perpendicularly to a longitudinal axis of the sidewall, wherein each of the at least one root-guiding extensions defines an open-ended hollow passageway in communication with the cavity; wherein, when embedded a dug pit, the longitudinal axis of the sidewall is upright and the top opening does not extend above surface level, and wherein at least a vertical portion of the sidewall ending with the peripheral edge is configured for entrenching in a bottom surface of the pit.

An irrigation apparatus for dispersing liquid through a plant growing medium is disclosed. The apparatus includes a container. The container has an outer wall with an inner surface, an open top, and a base portion configured to cover the plant growing medium. The base portion is configured with a plurality of holes for receiving liquid therethrough. The plurality of holes are configured as raised shields to block light and receive air, water, and nutrients. The container is configured with at least one center opening therethrough having an inner wall for receiving a plant. The center opening has at least one longitudinal opening extending therefrom to outer wall to allow placement of container on plant or to allow removal of container from plant. The container is configured with a plurality of stakes extending therefrom the base portion for providing stability for apparatus to be secured in plant growing medium.

An irrigation apparatus for dispersing liquid through a plant growing medium is disclosed. The apparatus includes a geometrically shaped container of variable size. The container has an outer wall with an inner surface, an open top, and a base portion configured to cover the plant growing medium. The base portion is configured with a plurality of holes for receiving liquid therethrough. The plurality of holes are configured as raised half-circles to block light and receive air, water, and nutrients. The container is configured with at least one center opening therethrough having an inner wall for receiving a plant. The center opening has at least one longitudinal opening extending therefrom to outer wall to allow placement of container on plant or to allow removal of container from plant. The container is configured with a plurality of geometrically shaped stakes of variable size extending therefrom the base portion for providing stability for apparatus to be secured in plant growing medium.

A method of making a daylight redirecting window film having a layered structure with a total thickness of less than one millimeter and having at least two optical films bonded together. One of the optical films has a first light redirecting layer disposed on a first side of the film and including a linear array of light redirecting structures configured to reflect light using a total internal reflection and defining a parallel array of narrow channels, and a second light redirecting layers disposed on an opposite second side of the film and including light scattering surface microstructures. The method includes coating a surface of at least one of the films with an optical adhesive, positioning the optical films such that the top portions of the light redirecting structures face inwards, and bonding the films together to form a monolithic multi-layer light redirecting film structure.

A tree mat is formed to cover the root portion of a planted tree and cover the surrounding soil. The tree mat according to an embodiment includes a base part formed in a predetermined size to cover soil around a tree and including a tree insert hole formed in a central portion thereof, and a protective part provided in the same shape including the tree insert hole as the base part and coupled to an upper portion of the base part to store fertilizer or water between the base part and the protective part, wherein the base part includes fine water supply/drain holes formed therein to have a predetermined size so that the fertilizer is discharged to the soil.