Invasive – Purple Loosestrife
1. Hummingbird Hyssop
Name: Agastache cana
USDA Hardiness Zones: 5 to 9
Size: Up to 3 feet tall and 18 inches wide
Conditions: Full sun; well-drained soil
This tall, xeric perennial adds a deep rose color to the garden in the heat of summer. Spikes of tubular flowers attract many varieties of hummingbirds throughout summer, making this is a must-have plant. Minimal maintenance is required. Do not cut hummingbird hyssop back in fall because leaving the foliage intact for winter allows it to catch leaves and other garden debris for insulation, helping the plant survive.
Invasive – Dame’s Rocket
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