Quote Originally Posted by Dutch Pimp
Anybody know of a cheap, simple nutrient source for silica?..
Does horsetail weed grow where you live? It's a primitive plant that is very high in silicates. It grows wild all OVER the place, becoming a noxious weed in many cases. It likes moist soils. You probably have some in your back yard lol!
At the greenhouse where I used to tech, we made a foliar silica/iron spray by steeping dried horsetail in hot water, straining, and then adding chelated iron.
Hopefully Rhizome will pop in because I'm certain he knows the details on making a 'horsetail tea'.