Stupendous tall Iris with beautifully crafted yellow ‘flags’ on rigid upright stems well above the narrow strappy green leaves (easily hidden among other perennials).
For open sites on fertile moist soils ideally but very tough. Basically they’ll grow anywhere Agapanthus or Kniphofia succeed.
1L pots ~ £7
Aconitum ex. Spark's variety
Classic tall spires of deepest inky purple in summer. Ideal among medium sized deciduous shrubs. Any fertile retentive soil in sun or semi shade. These are seedlings but come true.
Amsonia hubrichtii hybrid
None of the Amsonias are exactly garish but all have a real beauty that is well worth a close look. The tubular flowers are a soft but clear blue over willowy foliage. Hubrichtii itself (which I hope to have for sale next year) is a bit of a classic, with extremely fine narrow foliage turning intense golds and oranges in autumn, but it is on the small side and can be hard to please. The hybrids we have are larger overall but with the same narrow foliage and good autumn colour. An easy border perennial.
1L pots ~ £6
A big wide branching perennial mainly grown for the fruits, like elongate mutant blackberries, in late summer, by which time the entire plant will have developed a rhubarb-pink hue.
Earlier on it’s a big lush green thing decorated with spikes of creamy flowers. It looks well with other large herbs, such as Datisca or Zantedeschia, or Ligularia. Grows quickly in any moist fertile soil in sun or part shade.
1L pots ~ £6