How to Fertilize Clematis 'Janny'?
Balanced perennial feed every four weeks spring through summer growth

Clematis 'Janny' · Clematis 'Janny'
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. Plant with the crown 5-8cm (2-3in) deep to encourage new shoots to grow from below ground level. Can be grown in containers at least 45cm (18in) deep and wide in a soil-based potting compost. See clematis cultivation
Balanced perennial feed every four weeks spring through summer growth