Schultz Flower & Vegetable Extended Feed Plant Food is great for all flowers and vegetables. It is convenient because it waters and feeds plants all at once. It starts working instantly for fast and beautiful results. Enriched with Schultz extended feed plant food, it feeds continuously for up to 9 months. The slow release of nutrients virtually eliminates the chance of overfeeding. Instead, your plants get the nutrition they need, when they need it. Feeds plants through the leaves and roots. It is easy to use and does not require mixing. Feed once & you're done!.