This sub-shrub, native to the Himalayas, is exceptional
for its rich blue flowers
which occur in terminal spikes during the early winter season. The 3- to
6-inch-long flower spikes are borne above
the large, rounded and prominently veined leaves. It is a popular garden
plant. The plant even looks great in foliage without flowers. One prominent
way in which it differs from its wild cousin
Rosy Eranthemum (Eranthemum roseum) is that the flowers are
completely scentless, whereas those of Rosy Eranthemum have a strong odour.
Blue Sage will
attain a height of 4 to 6 feet and has a 1 to 3 foot spread. After a season or
two each of the branches dies back to the soil line. If conditions are
reasonable numerous new shoots come up. Blue Sage
will produce more blooms and remain compact if the plant is
severely cut back after flowering. Cut the plant to the ground
after frost; new shoots will appear when the weather gets
warm. Flowering: February-April.