Micro Size, Halogen Power One of the challenges today's lighting designers face is to provide adequate pedestrian illumination from increasingly narrow planter areas. To address this problem, our engineering staff developed the SaguaroPetite®. Designed for today's crowded planters - the top of the FX Luminaire® SP is just 3.65" in diameter with a 12" Riser. When incorporated with plant material, the SP simply disappears into the garden.