Fertilizers, Nutrients & Additives

To support the plants you want to grow, sometimes the soil needs the right additives. Feed gardens well by adding high-quality plant fertilizer from Greenhouse Megastore. We have leading brands like Jack’s, Espoma, Pro-Mix and Earth Science to supplement everything from house plants to commercial landscapes.

Plants have a lot of different needs, which is why there are so many fertilizers. All-purpose fertilizers are almost always a safe bet, but we also have tomato fertilizers, orchid fertilizers and other special blends. Some fertilizers are intended for seed starting, while others promote fruit or foliage development. They come in many forms as well, from slow-release granular fertilizers to fast-acting liquid supplements. Keep your garden Earth-friendly with organic fertilizers like bone meal, chicken manure and worm castings.

Whether you need a balanced fertilizer, a high-potassium formula or something to boost your shrubs, we have something in stock that will match. Are you searching for specific soil additives? There are ways to adjust the soil pH or add certain nutrients like calcium and magnesium. We also have rooting hormones that stimulate cuttings, helping you propagate new plants and gardens faster.

Browse our catalog above or use the search bar to locate garden and greenhouse fertilizers in time for the growing season. Greenhouse Megastore is happy to work with our customers to determine the correct fertilizer for any application. Call us toll-free at 1-888-281-9337 to chat with a knowledgeable sales associate. We have bulk garden fertilizer bags and other ways to save, keeping good gardening within our budget.