Well, Spring is here and all sorts of plants are pushing through the soil. An old friend of mine who will soon be arrive is the Stinging Nettle.

Picture of Nettle, borrowed from BrewBook on Flickr
Off and on I have consumed Nettle infusion for a few years now. An infusion is a tea which is left to steep for 4-8 hours rather than the traditional 2-10 minutes. This allows time for the plant to break down fully in the water. Also, components of plants which are broken down early in steeping aid in further digesting other components later on.
As a side note, if you regularly drink any form of herbal tea, I recommend trying a cup which has been steeped 4-8 hours alongside a cup which has just been brewed. The difference in taste is not only that it is stronger, but is noticeably different in quality. (I recommend this with a leaf or root-based substance as flower teas finish much quicker owing to their more delicate construction.)
The taste of a nettle infusion is rich and earthy. It is not the grassy flavour some other herbs present with, nor are there much volatile oils such as with the mints and culinary herbs. To me it tastes strongly of health, vitality, spring, earth and green. Not everyone’s cup of tea, but delicious over ice during a heatwave.
The flavour is not misleading, nettle is actually ridiculously healthy, being high in iron as well as other minerals and vitamins. It is also one of the most commonly-used herbs in western European clinical herbalism, considered with its balancing qualities to be as close to a panacea as anything could be.
(Excuse me for hippying out there for a second.)
While I do not know of any stands large enough to harvest enough nettle to supply me with much infusion (which requires one dry ounce per liter), I do know where to obtain sufficient plant to play a few games.
Nettle contains histamine, and elicits a mild allergic reaction. Myself I have worked barehanded with nettles before and been fine, but then I used to install fiberglass insulation in short and a tank top, so YMMV.
Now I am also wondering, could I quickly make a rope of nettle to bind someone? The deceptively-named paddling.net (actually about kayaking and canoeing!) has a report of creating rope out of nettle, though in a way so as to remove the stinging qualities. Also found a website which contains detailed, illustrated instructions to making rope out of nettle and other easily-found fibres.