Hi ashropshirelady
Although high altitude lavender is great, this is grown in the same way as the lower lavender just at higher levels which increases its ester content making it more sedative than the lower types.
The type that I am talking about grows wild at high levels in some regions of the drome and haute provence (hence its name alpine lavender). It is a much smaller plant and has a more refined nature although the yield is far lower. I feel it is worth finding for some conditions (noteably skin conditions) and is worth the extra pennies!!
Again (and I am sorry to harp on about my holiday) I found some growing it the more remote cols (passes) and it was truly wonderful seeing it growing amongst other beautiful wild flowers. The cols were very high, very steep, very narrow with very high vertical drops on my side of the car (no barriers), very nerve racking!!! but worth it for the pictures of wild lavender.
Having been to this region several times I am always amazed at what I find growing wild, silver fir, helichrysum, rosemary, lavender it is an aromatherapists dream (not my husbands though who is lavendered out!!)
This year I also found a wonderful organic distillery (as well as others I have found in previous visits) that was more than happy to let you see the whole process of distillation. In the morning I watched Lavande Fine (true lavender) and in the afternoon marjoram. Got it all on video and am looking forward to showing it to my new students in September (hopefully they will be as thrilled as I am). Also thought about setting up aromatherapy tours of this region as I have found a lovely hotel that caters for vegetarians and loads of interesting places to visit, but will have to work out the logistics of it all.
Oh I have gone off the original subject sorry
Anyway hope this all helps
love and light