Wow that Ghost Lavender is something to look forward to. So pretty. Thought I'd come and hang out a bit and run away from the world. Lots of sharin' and carin' goin' on in this neck of the woods. I'll be interested to know how long it takes you to get that lavender going. Mine rooted in a few weeks in Spring temps but it has taken the entire summer for them to grow beyond cutting stage and fatten / branch out. One has been close to death the entire time but is fractionally growing in height and hanging onto some green.I haven't tried with lavender yet but I might this spring. I have regular and ghost lavender (planted a few months ago so no flowers yet) in the garden so I'll do both! And I think the key for me to get it to work is keeping it on the heat mat. Nothing happened when the perlite was room temps, which in my house are in the low to mid-60s most of the year.
P.S. There is something truly marvelous about a revegging plant imo.... love em for that!