Rhododendron

Rhododendron ponticum is a large evergreen shrub, often considered invasive in the UK, with leathery dark green leaves and clusters of purple-pink flowers in late spring to early summer. It can form dense thickets, outcompeting native vegetation.

Sun: Full sun to partial shade.

Soil: Acidic, well-drained soil.

Hardiness: H6 — down to −20°C.

Flowering: May, Jun.