While you're pruning you might want to try to root a few stems for more plants. It's a bit late for this, I have good luck rooting a few each spring by just cutting off a good looking stem, removing lower leaves and sticking them in the ground. I don't bother with them AT ALL or I'd have a better success rate, but the fact is I really don't need any more!

They seem to be doing well, at least from the picture. They probably are making seeds. Are the leaves themselves dying? Lavender don't like to be overwatered, they like good drainage too. If you want more flowers, it's usually a good idea to deadhead them before they go to seed.

Okay. We don't have true central heat, but heat with a wood stove. That room tend to run cold. No water pipes. No central heat. Just wood, wall, books, and fabric. I could also try the colder cellar with some weak light from a cellar window with translucent film over it. My ancesters were all English and came to 'America' in the 1600's (Puritans -Quaker). I grew up on the New England coast (cool) and always hoped to visit England. For now I get by watching Masterpiece Theatre pieces. I swear, I watch some and the repeats just to drink in the landscape, geology and foliage. Lucky you, Campanula. I grew up where people had interesting accents. When I went away to college, my accent was pointed out to me time and again, so I worked to eliminate it (I was living away in urban areas then, so easy enough to do for one one tuned in to pronunciation. I usually have to put the TV subtitles on with some of the U.K. programs, even though if I were to visit for a few weeks, I'd be speaking with the same accent. When watching these programs, I find myself repeating the words and accent a few times. I just love that! I tell my friends that I wasn't meant to be carried over here. I don't like hot weather. Love the smell of grass, shore, woods, moss, sheep, horses and cows. I love knitting with good wool yarn, but it's always too hot to enjoy sweaters here. If Poppleton and Emu still make that 100% wool, dark blue black 5-ply navy Guernsey yarn, I might order some to make a simple jumper. Pass me a scone and pour me a cup of tea. Embothrium, I can try a window area in the cellar, otherwise that lavender will have to get its own rental unit in a greenhouse. Thanks both of you for your help.

Hi all thank you so much for your help!! I’ll make a mental note about the leaves, though luckily the leaves are not physically ON the lavender, they are in leaf bags which I made a sort of wall of, to go around the pots. Next year, if they survive, I’ll come up with a better method :) I suppose I’ll just have to leave them and hope they live. I’m a bit disappointed my Home Depot sold them if they’re not particularly hardy (especially in this area) because they looked SO beautiful and even smelled great despite not having any flowers. floral uk- there’s a tiny window in the garage, but it’s super dark so I don’t think it would work. Ken- zone 6 in central Massachusetts (so not near the coast), so the weather here is a bit spastic.