Moisture retentive soil
Well drained soil
From late summer into autumn 'Vivid' puts on an eyecatching display of tall, pale mauve flower spikes, each densely packed with individual bugle-like flowers with speckled throats.
Physostegia have narrow lance-shaped pale green leaves with serrated margins. The upright stems of 'Alba' bear spikes of tiny two-lipped pure white flowers during early summer. The Obedient Plant ....