Propagation Lighting

Propagation lighting is distinct from main-canopy lighting. Seedlings, cuttings and clones require gentle, consistent light at an intensity that encourages root development without stressing delicate new growth. Too much intensity too early causes bleaching, wilting and stunted development. The right propagation light provides the correct spectrum and PPFD for each stage without generating the heat that damages young plants.
T5 Fluorescent Propagation Lights
T5 fluorescent tubes remain the most popular choice for propagation in the UK. Their low heat output allows positioning just 5–15cm above cuttings, delivering a gentle 200–400 µmol/m²/s — precisely the range that encourages rooting without photoinhibition. Available in 6400K blue-spectrum for vegetative propagation and 3000K warm-white for early flower rooting, T5 fixtures are inexpensive, simple and highly effective.
Multi-tube T5 panels are ideal for high-volume propagation, accommodating 24, 36 or 72-cell propagation trays beneath a single unit. Pair with a heated propagator tray for the warmth and humidity control that maximises rooting rates.
LED Propagation Panels
LED propagation lights have improved rapidly and are now a strong alternative to T5 systems. Purpose-built propagation LEDs are designed to deliver the correct PPFD without the heat penalty of a main-canopy LED system. Look for models with adjustable hanging height or dimming to allow gradual intensity increase as cuttings root and seedlings establish.
Many propagation LEDs include a blue-heavy spectrum with a small amount of red to support rapid cell division in root tissue. Avoid using full-power main-canopy LEDs above propagation trays — the intensity and heat will damage unrooted cuttings. We have been advising UK growers on correct propagation lighting since 2017. Browse the full range below.