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Hereof, are all Salvias perennials?
Recommended Varieties There are over 900 species of salvias and many of the tender perennial species are popular as annuals in regions where they are not fully winter hardy. The following common salvias are usually grown as annuals. They may be grown as perennials in warmer regions.
do Salvias spread?
While different species of salvia will vary in terms of their height and spread, these plants will generally reach heights between 2–4 feet and can have a spread of anywhere from a foot to 4 feet. Their fast growth will quickly provide you with some color and greenery in your garden.
Most of these Salvias are evergreen to a certain temperature, below which they can behave as herbaceous perennials. Salvia greggii (often spelled incorrectly as Salvia greggi) is the most commonly grown of the woody salvias. While Salvia greggii is tolerant of severe pruning, this is best done only in spring or summer.