Drying lavender/general lavender questions

Drying lavender/general lavender questions

I planted some french lavender in my yard this year - it's the kind that has ferny-looking leaves. It's grown really well but did not bloom a great deal. My best friend mentioned she'd love some dried lavender, so I thought I'd try to do it, but every site I look at talks about drying the flowers. If I just dry the leaves will there still be enough scent for it to be worth it? And for those of you who've done it before - suggestions? I also had some other lavender I planted that grew but never bloomed - it said "english lavender" on the tag and the leaves are more of a blue green color. Any tips on getting it and the other to bloom more next year? Or suggestions on anything I need to do to take care of it over the winter. I live in zone 7b (if I'm reading the map right!) Thanks for your help!
Spring sprung very, very suddenly!

Spring sprung very, very suddenly!

Chile peppers

Chile peppers

plant ID plz~

plant ID plz~

Fall Garden Photos- Zone 6

Fall Garden Photos- Zone 6

Dahlias!

Dahlias!

Another angle of the mystery bug

Another angle of the mystery bug