clematis 'Sir Trevor Lawrence'

Plant in a moisture-retentive, well-drained soil, with the roots and base of the plant kept cool and shaded by other plants or a layer of pebbles at the base. Plant with the crown 5-8cm deep to encourage new shoots to grow from below ground level. Suitable for a large containers, at least 45cm deep and wide in a soil-based potting compost. See also clematis cultivation

Clematis pruning: group three - cut back last year's stems to a pair of strong buds 20cm above soil level before new growth begins in early spring

Propagate by layering or semi-hardwood cuttings

Young shoots may be troubled by aphids and caterpillars; petals can be eaten by earwigs

May suffer from clematis slime flux