Lemon Mint or Lemon Bee Balm (Monarda citriodora) - Herbaceous perennial in the mint family that blooms purple flowers with a strong lemon scent during spring & summer. 
 
 
Growth: Can grow about 30 inches tall.
Light: Full sun to part shade
Soil: Likes dry to medium moisture with well-drained soil.
Hardiness: Drought tolerant. Deer & rabbit resistant. Repels bugs.
Maintenance: Self-seeds. Low maintenance once established.
Benefits: Attracts butterflies & bees.