Plant Food 10-4-3. One formula for everthing you grow - indoors and out. This blended, liquid plant food is comprised of oilseed extract, an organic and natural source of highly efficient plant nutrition, plus nitrogen. If you want only one fertilizer you can count on for everything you grow, try Nature's Source. It's safe when used as directed, it's economical and IT WORKS! Internationally renowned horticulturist, Dr. Allan Armitage, uses it in his own gardens, a testament to its effectiveness.