'Purrsian Blue' has aromatic, silver green foliage, which forms attractive, naturally rounded clumps growing 14 to 18 inches high and spreads 18 to 30 inches across at maturity. It begins to flower in the late spring and continues blooming throughout the summer until the fall frosts arrive.

Does catmint spread easily?

Catmint has few pests and the seeds are sterile so it doesn't spread by self-sowing. Catmint is a classic cottage garden plant that often accompanies peonies, roses, coreopsis, and delphiniums. Because of its spreading nature, it's a great filler plant to provide color and green foliage between later blooming flowers.

Can catmint be invasive?

Catmint is not a plant that is generally considered invasive according to Cornell University. However, it does spread within your garden over time and does need to be controlled to some degree. ... It is a drought-tolerant plant that produces attractive foliage and blue flowers throughout the summer.