Hello Marsha
I grow several agastaches incl Black Adder. Some are easier than others....Blue Boa for example is very easy
For Black Adder I find pulling a basal shoot the most effective way. However, a cutting from a shoot with no flower buds and of reasonable thickness and about 2 or 3" long works well. I use hormone gel/powder and a 50/50 mixture of mpc and perlite.
When? Now or during the summer but the earlier the better I think
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.