Euphorbia sikkimensis | Sikkim spurge Herbaceous Perennial/RHS Gardening
Euphorbia sikkimensis (Sikkim spurge) An erect herbaceous perennial with pink young shoots bearing narrow leaves and terminal clusters of bright yellow flower-heads in late summer. HxS upto 1.5m x 50cm. Sun or part shade in a moist but well drained soil.
Penstemon 'Schoenholzeri' HxS 90x60cm. Vivid scarlet flowers over a long period from June to September, often in to October in milder conditions. Simple, narrow leaves. Full sun in a well drained soil. May need some winter protection. Best not to cut back until spring.
Find Cornish plants for every garden - Plant A-ZDuchy of Cornwall Nursery
Helleborus 'Harvington Hybrids' Double Red Lenten Rose. Large double red flowers in late winter/early spring. Evergreen, dark green foliage. Well drained fertile soil in shade or part shade. Will grow in sun provided the soil does not dry out and is rich in organic material such as well rotted manure.