Here's a list of 12 plant varieties and their ideal situation for specific zones.
More in Outdoors
Note: This is plant has been labeled an invasive species in some states.
- Upright tender perennial with narrow leaves and light pink flowers in summer.
- Plant in full sun to partial shade; invasive weed in warmer climates.
- Plant in moist well-drained soil.
- Height: 3-4 feet
- Width: 3-4 feet
- Grown as an annual in zones 2-7
- Hardy in USDA zones 8-11
Zones 2-7: Plant in spring after danger of frost has passed; plant in full sun; remove after first killing frost.
Zones 8-11: Plant in spring; plant in full sun to partial shade; mulch to conserve moisture; prune back in late winter; deadhead to prevent seeding.