trying to locate a source of tansy (Tanacetum vulgare)
For the last couple years we've had certain times where the common black ant has decided to migrate into our home in huge numbers. This is normally in late spring and summer and with a small child we just don't want to start spraying pesticides everywhere. Normally we go the vacuum and ant trap route and I'll make up a 5% solution of borax and honey for outside where they come in.
One of the "natural" remedies I've read is using tansy leaves to keep these buggers at bay and they are great beneficial insect-attracting plants as well, not to mention have a beautiful yellow flower. It would be kept contained since I know they can grow pretty invasive if not restricted but the problem is I CAN'T FIND THEM ANYWHERE FOR PURCHASE!
I'm located in SE PA near philly and would love some help in acquiring a plant or two.
Thanks for your help.