Campanula Iridescent Bells = 'Iribella' (PBR) (Bellflower 'Iridescent Bells'): Purple buds open to silvery-lilac bells in summer. Prefers a moisture retentive soil. Height to 80cm. Hardy [Collect Only]

Hosta 'Frances Williams': Large heart-shaped crinkled leaves with a prominent green-yellow margin. Lavender purple flowers in mid summer. Hardy. Up to 75cm.

Hosta 'Krossa Regal': A robust variety with tall grey-green leaves with deep veins. Lilac flowers in mid-summer. Also good in containers. Hardy. Up to 1m. [Collect Only]

Liatris spicata 'Kobold' (Gayfeather 'Kobold'): Plump spikes of purple flowers in mid to late summer. Likes dryish soil in a sunny spot. To 80cm. Hardy

Nepeta kubanica (Large flowered catmint): Upright stems of large deep blue flowers above aromatic deep green leaves. Long flowering. Prefers a sunny spot. Hardy. Up to 90cm.

Persicaria microcephala 'Red Dragon' (PBR) (Knotweed 'Red Dragon'): Stunning foliage with upright stems of lance-shaped purple-green leaves, with delicate chevron markings in white. Best leaf colour in full sun. Hardy. Up to 90cm. [Collect Only]

Salvia nemorosa 'Amethyst' (Balkan Clary 'Amethyst'): Slender spires of long-lasting warm purple spikes from mid to late summer. To 90cm. Hardy.

Salvia x sylvestris 'Mainacht' (Wood sage 'May Night'): Spikes of warm purplish blue flowers in mid-summer. Height to 70cm. Hardy.