Typha latifolia ‘Variegata’
A marginal aquatic perennial with strap-shaped narrow leaves with cream stripes. Dark brown spikes in summer lasting well into autumn.
Typha minima
A slender marginal aquatic perennial with very narrow leaves. Dark brown spikes from mid to late summer.
Ugni molinae
An upright shrub or tree with glossy dark green leaves. Fragrant, pink-tinged, white flowers in late spring, followed by dark red berries in autumn.
Ulex europaeus
An upright to rounded shrub spine-tipped green stems with grooved spine-leaves. Scented, bright yellow flowers mainly in spring but may flower intermittently throughout the year.
Ulex europaeus ‘Flore Pleno’
An upright to rounded shrub spine-tipped green stems with grooved spine-leaves. Scented, double yellow flowers mainly in spring but may flower intermittently throughout the year.
Ulmus parvifolia ‘Geisha’
A dwarf bushy shrub with tiny green leaves edged with white.
Ulmus x hollandica ‘Jacqueline Hillier’
A rounded bushy, suckering shrub with double-toothed small leaves.
Umbilicus rupestris
A small perennial with fleshy round leaves with a dimple in the centre. Spikes of tubular greenish white flowers in summer.
Uncinia rubra
An evergreen perennial with pretty greenish red to rich reddish brown leaves. Narrow spikes of brown to black flowers from mid to late summer.
Uncinia uncinata
A dense evergreen perennial with pretty pale brown to red-brown leaves. Dark brown flowers from mid to late summer.
Urospermum delachampii
A spreading biennial or perennial with hairy grey-green leaves and soft lemon-yellow flowers in summer.
Uvularia grandiflora
A choice perennial with downward pointing mid-green leaves. Pendent yellow flowers sometimes flushed green from late spring to early summer.