A plant growing apparatus including a chamber for growing plants. The chamber includes a base for receiving the plants, a lid movably mounted in relation to the base having an outer face and an opposite inner face, and a collapsible screen having an inner surface and being mounted between the base and the lid for closing the chamber. The collapsible screen is operable between an extended configuration and a collapsed configuration. The collapsible screen is configured to collapse upon approaching the lid towards the base and to extend, upon distancing the lid away from the base. The plant growing apparatus also includes a horticultural lamp mounted on the inner face of the lid.