The most effective, groundwater safe plant food on the market. Created over many years by a German botanist. The nutrients, while low in concentration, are readily available to all plants and easily absorbed. All-purpose plant food feeds indoor and outdoor plants. Good for use when transplanting or cutting to help stimulate plant growth. Apply with a hose-end sprayer for broadcast foliar feeding. Non-burning formula feeds safely through the leaves or roots. Available in 1-gallon.