At its best:
Jun, Jul, Aug
Prop the basket in a bucket or plant pot, to make planting easy, and line it with sphagnum moss or an alternative.
Add a piece of plastic – such as from an old compost bag – to the inside of the moss, to help retain moisture. Cut a few drainage holes in the plastic.
Fill the basket two-thirds with multi-purpose compost, and add water-retaining gel, mixing it in with the compost.
Add the nemesia and diascia to the centre of the basket, then the pelargonium and diascia plants around the edge. Fill in-between the roots with compost, leaving a gap of around 2cm between the top of the compost and the basket's rim.
Add slow-release fertiliser pellets to the compost around the plants. Water in well and leave the basket to drain before hanging in position.