Description
PROBOX PROPAGATOR SMALL 60CM X 40CM X 40CM is the compact dedicated propagation environment from ProBox that creates the ideal high-humidity, controlled-light space for rooting cuttings and establishing seedlings before transplanting into the main growing system. We have been recommending ProBox propagators to UK growers since 2017 as a practical, well-built solution for managing the most environmentally sensitive phase of the cultivation cycle.
Why a Dedicated Propagation Environment Dramatically Improves Cutting Success
Unrooted cuttings are extremely vulnerable to moisture loss through leaf transpiration because they lack the root system to replace water uptake from substrate. The critical window between taking a cutting and the establishment of a functioning root system requires an environment that maintains very high relative humidity — typically 85–95% — to minimise the vapour pressure deficit that drives transpiration. Attempting to propagate cuttings in the main grow room, where humidity is managed for established plants at lower levels, results in poor rooting rates and slow, stressed establishment. The ProBox Small propagator at 60 x 40 x 40cm provides a compact, enclosed environment where humidity from a small humidifier or misting quickly builds to the high levels cuttings need, while indirect low-intensity light provides the energy for photosynthetic function without the heat stress that direct HID or high-power LED illumination would cause in an unrooted plant.
Setup, Lighting, and Transitioning Cuttings to the Main Grow Space
The ProBox Small accommodates a standard propagation tray with humidity dome inside, or can be used with propagation cubes placed directly on the floor tray. Use a T5 fluorescent or small LED propagation bar positioned at close range — 10–20cm — for the gentle light intensity appropriate for propagation. Maintain temperatures of 22–26°C at the cutting level for optimal rooting speed. As roots establish — typically visible through the cube or detectable by gentle resistance to pulling — begin venting the propagator gradually to acclimatise cuttings to lower ambient humidity before transplanting into your main grow system. The compact 60 x 40cm footprint makes the ProBox Small ideal for home growers with limited space. Browse our full propagation range for cloning gels, rooting cubes, and propagation lighting to complete your setup.
Browse the full range: Explore our complete New Products range at The Horticulture Company. Also in this range: IONIC CALMAG PRO, UGRO XL BASIC 70LITRE, EXHALE CO2 BAG, PLANT !T YOYO (PACK OF 8).







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