How to Fertilize clematis 'Henryi'?
Diluted high-potassium feed monthly spring through early summer months

clematis 'Henryi' · Clematis 'Henryi'
Plant in a sheltered situation 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 (2-3in) deep to encourage new shoots to grow from below ground level. See clematis cultivation for more advice
Diluted high-potassium feed monthly spring through early summer months