The invention relates to a wall component 10 for growing plants. Component 10 has a chamber 11, in use containing a growing medium. Chamber 11 has a chamber front face 12 with holes 12A through which plants can be planted, a chamber top face 13, a chamber bottom face 14, opposing chamber side faces 16,17, and a chamber rear face 15. A cut-out 18 is provided in the top face and the side walls between the front and rear face, said cut-out adapted to receive a generally horizontal irrigation pipe X. In use two or more components can be arranged abutting one another in rows and columns to form a wall for growing plants whilst supporting an irrigation pipe.
