Visit robwilsonart.co.uk/art-kit-timelapse to watch a 3-minute time-lapse video showing how I painted the silver birches using card and stencil.

Best sown in autumn in a light position in a cold frame. Only just cover seed and place pot in a sunny position.

Spring sown seed should be surface sown in a sunny position in a cold frame.

When large enough to handle, prick out into individual pots and grow on in a cold frame for at least a first winter. 

Plant out into permanent positions in late spring or early summer, after last expected frosts.