Your age ?

[Unbound]

It can cause it to be a more efficient magical tool, as well as can potentially awaken other energetic abilities that have to do with the natural spirit of the metals. Yes, technically you can do this to awaken the spirits in any metal, so it would work the same for a gardening tool. It will open up the natural energies and it would be like clearing an electrical path, your energy will more ready flow through the tool from you and in to your work. Depending on the blade, it's also possible for there to be intelligence within a blade that can even be communicated with.

Um, you maaay be able to find a store with it, but I wouldn't count on it. You're best off to get some mugwort and to make the tincture yourself. (http://www.kcweb.com/herb/tincture.htm) This can include a ceremony if this is conducive to you in the sense of awakening and organizing the energy of the herb. You can also do a ceremony for the soaking of the blade, which you would probably keep soaking for a few hours at least (you don't want to do it for toooo long, just because you don't want to induce rust). Ceremonies, and rituals, are activities designed to focus the energies. All the tools involved in ceremonies do little on their own, they represent portions of the magician and they provide a focus for particular energy types as they are being expressed. For example, it can be challenging for an individual to internally manage masculine and feminine energies from the mind. However, if you signify a sword as the embodiment of the masculine energy, and the chalice as the feminine (for example), you can more easily differentiate between the two types of energy while doing the work.