Lemon verbena
Aloysia citrodora

Hardiness: Zones 8 to 10
Plant type: Herbaceous perennial
Height: 2-4ft
Spread: 2-4ft
Sun: Full sun
Water: Medium to dry
Bloom time: July to September
Bloom color: White
Soil: Well draining, garden soil, compost amendment beneficial

More information on this plant here.