Mentha spicata ‘Spearmint’, this popular plant is known by many names: Common mint, Garden mint, Green Pea Mint, Lamb Mint, Mackerel Mint, Mary’s Herb, Sage of Bethlehem. Mentha spicata ‘Spearmint’ is a rhizomatous perennial that produces very fragrant foliage on erect bracts. The flowers are light purple. It blooms in the summer. Mentha spicata ‘Spearmint’ can be grown in any soil, poorly-drained or well-drained. You can plant it in the sun as well as the shade.
Mentha spicata ‘Spearmint’ could be invasive so you should restrict the spread of the roots. You can propagate by divisions or seeds. You can cut it back after the flowers are gone and it will regrow. Caterpillars do like these plants!