Hi, I've rooted a few things, most stuff I just layer... but I have a new house and want to use a few plants for edging and it seems to be cost prohibitive to buy these in bulk at the moment ($6-8/each here) so wanted to get some tips on making more. I have Nepeta 'walker's low' and artemesias 'silver mound' and 'powis castle'. Also a 'Tuscan blue' rosemary. Can anyone tell me the best methods of making more of these? Thanks!

-Bonnie