Aster trifoliatus subsp. ageratoides 'Ashvi': White flowers in a neat mound over a very long season - July to November. Hardy. Up to 80cm.

Erigeron karvinskianus (Fleabane): That pretty little daisy you see growing in the cracks in paving and walls in late summer....

Leucanthemum x superbum 'Aglaia' (Shasta Daisy 'Aglaia'): Double, frilly white flowers in late summer and autumn. Glossy green foliage. Fully hardy, dislikes soggy soils. Height to 50cm

Persicaria amplexicaulis 'Alba' (white flowered red bistort): Spikes of white flowers in late summer. Large oval pointed leaves. Hardy. Up to 1.2m. [Collect Only]

Persicaria runcinata 'Purple Fantasy': Attractive foliage perennial with triangular leaves with V shaped dark purple marks. Loose spikes of pink/white flowers in summer. Hardy. Up to 60cm.