Abstract: Apparatus is provided comprising a housing for growing plants under controlled conditions. The housing is defined by a base, walls and a cap. Electrical sockets are mounted in the housing, and fluorescent lamps are electrically connected to the sockets. Supports connected to the wall in spaced-apart relation to the sockets are releasably engageable with the fluorescent lamps for support thereof. A typical wall is formed with a recess having a given length in a first direction. The support is made of a flexible material and is formed with a stem, clips extending from one side of the stem for embracing and supporting the fluorescent light, and a head extending from another side of the stem and engageable in the recess. Arms lead away from the head and wall at first locations adjacent to and on either side of the stem and towards the wall at second locations farther from and on either side of the stem. Feet are respectively at distal ends of the arms and engageable in the recess.

Abstract: Apparatus for stimulating plant growth under controlled conditions comprises a housing having a lower portion, an upper portion, a hollow interior in which plants are grown and an exterior. Fluorescent lamps mounted within the interior stimulate growth of the plants. The housing is formed with vacuum-metalized walls or panels which, when illuminated by the lamps, reflect a major proportion of light into the interior. The housing is further formed with a lower vent and an upper vent to facilitate circulation of air through the interior. The lower vent substantially surrounds the lower portion of the housing and the upper vent substantially surrounds the upper portion of the housing to optimize the flow of air. The lower and upper vents are formed and located with respect to the lamps and walls so as substantially to block passage of light through the vents from the interior to the exterior.