Hosta

Plant in spring or autumn in moisture-retentive, humus-rich soil in partial or full shade. 'Sum and Substance' tolerates more sun than most hostas — its thick leaves resist scorching — but the richest gold colour develops in light shade. Mulch thickly with garden compost each spring and keep the soil consistently moist throughout summer. Feed with a balanced slow-release fertiliser in April. Grow in containers using loam-based compost for the best results on patios. Protect emerging shoots from late frosts with a layer of fleece in April. Divide every five to six years in spring to rejuvenate large clumps.

Remove individual damaged or yellowing leaves throughout the growing season. Cut spent flower stems back to the base after blooming. Once the foliage collapses after the first autumn frosts, clear away all dead leaves to reduce slug hiding places over winter.