Systems, devices, and/or methods for covering structures

1. A support system for a green wall, the support system comprising a plurality of elongate, top-less, trough-like trays, wherein:

the trays are configured to resist vertical movement of a plurality of elongate containers once the containers are installed in the trays, the containers configured to contain plant growing medium, the containers arranged to define a stacked plurality of substantially horizontally-extending courses;

the trays are configured to resist horizontal movement of the containers once the containers are installed in the trays; and

each of the trays is configured to secure a corresponding tubular irrigation conduit that extends substantially parallel to and substantially below the corresponding course of the stacked plurality of substantially horizontally-extending courses.

2. The system of claim 1 , further comprising:

the trays are configured to securely, yet non-destructively removeably, attach to a securement system.

3. The system of claim 1 , further comprising:

a first tray of the plurality trays comprises a tray bottom portion that is substantially solid and comprises a plurality of ribs that are configured to retain a predetermined amount of water in the tray bottom portion.

4. The system of claim 1 , further comprising:

the plurality of containers.

5. The system of claim 1 , further comprising:

the irrigation conduit.

6. The system of claim 1 , further comprising:

a restrainer configured to secure a container to a tray and/or a securement system.

7. The system of claim 1 , wherein:

each tray is configured to be located substantially horizontally and/or substantially vertically adjacent to one or more growing zones, each growing zone defined by one or more of the containers, each growing zone not occupied by a tray.

8. The system of claim 1 , wherein:

each tray defines a longitudinal axis that is configured to extend substantially parallel to a longitudinal axis of each container installed in that tray.

9. The system of claim 1 , wherein:

a first tray of the plurality of trays defines a plurality of substantially solid tray bottom portions.

10. The system of claim 1 , wherein:

one or more of the trays is substantially semi-annular in longitudinal cross-section.

11. The system of claim 1 , wherein:

one or more of the trays is configured to non-destructively releasably lockably attach to a securement system.

12. The system of claim 1 , wherein:

one or more of the trays comprises one or more tray support members that is configured to be supported by a securement system.

13. The system of claim 1 , wherein:

one or more of the trays comprises one or more substantially downward-opening hook-shaped tray hangers that is configured to be supported by a substantially horizontally-extending elongate member of a securement system.

14. The system of claim 1 , wherein:

one or more of the trays comprises one or more tray securement members that is configured to securely, yet non-destructively removeably, attach to a securement system.

15. The system of claim 1 , wherein:

one or more of the trays comprises one or more substantially upward-opening hook-shaped tray securement members that is configured to securely, yet non-destructively removeably, attach to a substantially horizontally-extending elongate member of a securement system.

16. The system of claim 1 , wherein:

one or more of the trays comprises an apertured portion.

17. The system of claim 1 , wherein:

one or more of the trays is configured to allow plant roots to extend substantially downwards from the containers.

18. The system of claim 1 , wherein:

the system is configured to provide an exposed face for the green wall that is plantable to form a vegetated living wall.