The foliage and flowerhead look very much like L. citriodora, but it has a disinctly lemony scent, not 'greasy' or oily as you describe. Check your library or bookstore for The Genus Lavandula by Tim Upson, Susyn Andrews and Georita Harriott. Very detailed drawings of the various species as well as good descriptions and lots of photos.

please .. though i like to see my name in lights... use a post name that is searchable .... so that my pearls of wisdom ... anyones pearls.. can be referenced later ... anyway ...i dont know why you have to wait until they are growing.. but they do come up on stored energy ... so making too small a hole.. and severing hosta roots is going to hurt them ... but if you are working on a big enough sized clump of soil ... you should be all set ... frankly.. maples will win .... take note this summer which are the best under them .... and move out the problem children ... and move in the one that have a chance of scraping it out with the maple ... consider pots under the maples... and the maple will still grow into the pot .... but it is easier to move the pots occasionally .. rather than popping them out.. every severed root will be replaced by hundreds of replacement feeder roots ... IMO ... i moved 65 miles from my old maples .. lol ... i won ken

bump

This might take the prize for the biggest bump, but I ever so accidentally stumbled upon your lovely forum today and then in a moment so serendipitously immense it is beyond Kismet, found this particular post giving me the answers to questions that have been niggling my brain far too long. Thank you, thank you! Urm.... Thank you!!! Rain