Cinnamon extract can also be found in the health suppliments section. I had no luck finding it on spice racks but found a bottle at Vitamin Shoppe. The GNC I checked do not carry it but some other might. Hope this help.
I am using it tonight on my plant but the mites are all over the blooms, not sure what I should do to get rid of those critters, since I do not have worm tea.