How to Prune clematis 'W.E. Gladstone'?
Optional Pruning (clematis) group 2, or Pruning (clematis) group 3 - results in loss of early flowers

clematis 'W.E. Gladstone' · Clematis 'W.E. Gladstone'
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
Optional Pruning (clematis) group 2, or Pruning (clematis) group 3 - results in loss of early flowers