Piptanthus nepalensis (Evergreen Laburnum)
- Usually Flowers : May, June
Semi-evergreen or deciduous, open, upright and tender shrub with leaves of three dark blue-green leaflets. Upright, terminal racemes of pea-like, vanilla-scented, bright yellow flowers emerge from hairy buds May and June. Ht.2.5mt.(8ft.). Pendant green seed pods form after flowers August to September. Best grown in full sun and well-drained soil. Grow against a warm wall and protect from cold winds.
Polygonum baldschuanicum (Mile-a-minute plant)
Polygonum (syn. Fallopia)
- Usually Flowers : June, July, August, September
Very vigorous, deciduous woody-stemmed twining climber with rounded triangular leaves. Drooping panicles of tubular, pink-tinged white flowers produced from summer to early autumn. Ht.15mt.(50ft.). Grow in full sun or part shade and moist, well-drained soil. Very tough.