Aconitum napellus (Monkshood):
Dark blue hooded flowers over finely divided foliage. This Aconitum flowers early, in late spring/early summer. Height to 1.5m. Hardy.
[Collect Only]
Cichorium intybus (Wild chicory):
Beautiful cornflower-blue flowers held on tall stems in late summer. May need support. Hardy. Up to 2m.