10 Best Tomato Fertilizers 2026 in the United States

Burpee Organic Tomato & Vegetable Granular Plant Food is a well-regarded choice for gardeners looking for an organic fertilizer. It comes in a 4-pound package and is easy to apply, providing long-lasting results by releasing nutrients over a period of up to 3 months. This makes it convenient for those who prefer not to fertilize frequently. The product is OMRI listed, ensuring it is suitable for organic gardening practices.

The fertilizer supports robust growth and healthy plants by supplying essential nutrients continuously throughout the growing season. It is well-suited for tomatoes and other vegetables, but may not be the best choice for those seeking a synthetic fertilizer with immediate, intense nutrient delivery. Burpee's long-standing reputation and commitment to quality make this a reliable option for organic gardeners aiming for superior yield and plant health.

This 10-10-10 slow-release fertilizer offers a balanced mix of nitrogen, phosphorus, and potassium, which are essential nutrients for healthy tomato plants. Its granular form makes it easy to spread evenly in your garden. The slow-release formula means it feeds your plants for up to 8 weeks, reducing how often you need to apply it—typically twice per season for vegetables like tomatoes.

It also includes a quick-release nitrogen component to give your plants an immediate growth boost, which is handy for jump-starting your tomato plants early on. While this fertilizer is synthetic, it’s versatile enough for a wide range of outdoor plants, including tomatoes, flowers, shrubs, and fruit trees. Just remember to water after application to help the nutrients soak into the soil.

For tomato growers seeking an easy-to-use, balanced fertilizer with steady feeding and occasional quick boosts, this product fits well. Its all-purpose nature suits gardeners who want a simple, reliable fertilizer without fussing over specialized mixes.

Osmocote Smart-Release Plant Food Flower & Vegetable is a well-regarded fertilizer that works great for vegetable gardens, including tomatoes. It’s designed to support strong root growth and healthy top growth, which is important for producing flavorful tomatoes. One of its main benefits is the slow-release formula that feeds plants for up to four months, meaning you won’t need to apply it frequently. This can save time and effort during the growing season.

The fertilizer comes in granule form, which is easy to spread around your plants. Osmocote is known for balanced nutrition that supports both blooms and vegetables. It’s a synthetic fertilizer, so if you prefer organic options, this might not be the best fit.

This product is well suited for gardeners looking for a low-maintenance, slow-feeding fertilizer to promote healthy tomato plants and other vegetables.