Hesperis matronalis
Dame's rocket is another banned flower in Colorado. That is, you can't sell it. They are a tall, early summer flowers. They remind me of tall phlox but they have 4 petals rather than 5. I still love them; they grow well here, but don't take over.
Hesperis matronalis
Type: perennial Zone: A2,A3,1,2,3,4,5,6-all
Elevation (if known):
Color: lavender Height: 2-4 ft
Ease of growth: easy
Bloom Time : Late Spring, Summer
Sun: yes Part Shade: no Shade: no
Water Needs: regular
Native to: CO/NM native? no
Deer Resistant: no Rabbit Resistant : no
Soil : Average
Propagation: Seeds, divisions
Comments/warnings: