Chaste Tree
Summer heat brings out the best in chaste tree, which covers itself in fragrant spikes of lavender-blue flowers. Aromatic, hand-shaped gray-green leaves add soft texture to cottage gardens, borders, and patio containers. Bees, butterflies, and hummingbirds visit the long-lasting blooms constantly. Give it full sun and well-drained or even dry soil once established. Chaste tree seed responds well to warmth, and soaking it briefly before sowing can speed things along.