Ideal for grow bags, large pots or veg garden, our ingenious Halos have a central inner pot that creates a deeper planting zone for healthier root growth. A 3 litre outer 'moat' has six 2.8cm (1") watering spikes which penetrate below the surface, delivering water and liquid feed direct to the roots at a rate that the plant is better able to absorb, minimising wastage (it typically takes 3-6 hours for the water reservoir to drain fully). There are also three anchor slots for canes, and a cane grip cap to create a sturdy wigwam. Canes not included. Diameter 29cm (11½"). Pack of 3.