System comprising a structure for removably attaching one or more holders for plants, and at least one holder

A system comprising a structure for removably attaching one or more detachable holders for plants:

• the structure comprising a plurality of horizontal supports;
• and
• the one or more detachable holders for plants comprising:
• a front part,
• a rear part connected to the front part and having a linear extension at a top side, wherein
• the linear extension is configured to engage with a first horizontal support, and
• a bottom part for supporting the one or more detachable holders for plants located between the front part and the rear part, wherein the bottom part includes a mechanism to engage the one or more detachable holders to a second horizontal support of the plurality of horizontal supports, wherein the first horizontal support and the second horizontal support are parallel to each other, wherein when the one or more detachable holders for plants is attached to the structure,
• a centre of mass of the one or more detachable holders for plants is at a distance in front of a plane formed by the first horizontal support and the second horizontal support, so that gravity pulling on the one or more detachable holders for plants will make the linear extension engage with the first horizontal support and the bottom part engage with the second horizontal support.