http://www.thepracticalherbalist.com/holistic-medicine-library/horsetail-pocket-herbal/

2 teaspoons of this chopped into fine pieces boiled 10 mins as a tea, best morning or midday as it gives a lot of energy.

This is horsetail herb (Equisetum arvense). It's 70% silica in it's nutritional profile, and is the primary plant used in making nutritional extracts containing silica.

It's growing all nuts and crazy in my garden right now. I grabbed a little and put it in my lunch, my mood flipped immediately positive. Otherwise been grumpybutt much of today.