Do sage plants multiply? I want to plant a few near evergreen trees but don't...

I want to plant a few near evergreen trees but don't want them to outgrow the nouns where they are mortal planted.
Answers:    My sage plant is about 16 years dated and currently is about 3 foot in diameter. Since we rent, it have made it through 5 moves and has done better every year. If you find that it outgrows the nouns that you want to plant it in, you should own no problem moving it in the adjectives.

I've only have one seedling start from dropped seed. You can usually prevent self-seeding by adjectives back the flower stalks after the plant blooms. (My plant took 6 years up to that time it bloomed, but that may not always be the overnight case. The first few years I was collecting a great deal of the leaves for drying, and that may have prevented flowering)
My sage plant have stayed in one spot for years. It doesn't kernel and produce multiple babies, but just grows woody. In reality, I have dug it out this spring and bought a untried one.