Clematis John Howells ('Zojohnhowells'PBR) (Vt)

Plant in 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. See clematis cultivation

Propagate by softwood cuttings in spring, semi-ripe cuttings in early summer or layering

Young shoots may be susceptible to aphids, slugs, snails or caterpillars

May be susceptible to clematis wilt and clematis slime flux