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Silver variegated leaves (not frost hardy) with violet purple flowers from May to November. Sun ..
Large heart-shaped leaves and maroon stained stems with lacy heads of lilac flowers in June and then..
Verbena bonariensis
Tightly packed clusters of small mauve flowers from late summer until the frosts. Sun ..
Lilac flower spikes compliment roses beautifully. Sun ..
Viola labradorica ambig.
A mass of small dark purple leaves with light purple flowers in April. Semi-shade ..