Hi, my culinary salvias are ocasionaly for that purpose but in general they are structural border shrubs for their reliable ornamental value. Some of the older shrubs are about 4 ft high. These may have trunks that are at 3" thick. They are evergreen, grey green slightly hairy leaves, and can be severely pruned, almost copiced and will come back vigorously. Mine have been producing plenty seedling volunteers which I'm planning to replant in my future wild prarie garden this fall/spring. They produce masses of blue flowers in summer just before lavender with which combines very well. Both seem to have the same soil and humidity requirements. With our typical very dry rainless summers they simply thrive. Ideally they profit from fall pruning (, which doesn't always occur...
). They put up their show generously with almost no care at all. They withstand frost , however only once I lost the summer bloom with a very late severe frost exactly Christmas day ( already summer in the S.hemisphere)., but the leaves or plants were unharmed. Some of my bushes are about 27 years old and they seem to keep going on.
