A hanging basket liner 2 comprises a concave-shaped form of an impermeable plastics material and which has a perforated upper in use region 2a; and a non-perforated lower in use region 2b that functions in use as a moisture reservoir. The plastics material is suitably a plastics, preferably polyethylene, film that is pre-formed substantially to the required shape. The perforated upper in use region may be formed by apertures 3 larger than 1cm and they made be arcuate or half-moon shape. The film may be designed to biodegrade and may be light coloured or white to reduce solar heat gain. The plastic material may have a hemispherical or frusto-hemispherical shape.
