Best Slow-Release Flower Fertilisers of 2026

The Gro-Sure Plant Food offers an effortless solution for nourishing your plants. With just one application, you will provide an initial burst of energy, ensuring your plants get the boost they need right away. This product then supplies continuous feeding for up to six months, giving your plants the essential nutrients throughout the growing season. It is versatile enough for all non-ericaceous plants, making it ideal for pots, containers, beds, borders, and hanging baskets. You can enjoy healthy and thriving plants without constant reapplication.

The Goulding G60114 Fertiliser is designed to condition and enrich your soil, ensuring that your plants have the best foundation for growth. By promoting stronger roots, it helps you cultivate healthier plants that can withstand various conditions. You will also enjoy vibrant blooms, adding beauty to your garden. Enriched with humics, this fertiliser enhances soil quality, making it an excellent choice for any gardening enthusiast looking to improve their plant health.

Vitax Q4 Fertiliser is a versatile, all-purpose fertiliser perfect for a wide range of plants including flowers, vegetables, and fruit. Originally designed for professional growers, it helps you achieve bigger, brighter blooms and abundant crops. The fertiliser contains essential nutrients and trace elements to support healthy and vigorous plant growth. Its pelleted form is low dust and easy to handle, allowing you to apply it simply and cleanly by working it into the soil and watering it in. This makes gardening less messy and more enjoyable for you.

The Vitax Q4 Fertiliser is a professional-quality, all-purpose plant food ideal for gardeners looking to enhance their flowers, vegetables, fruit, and tomatoes. It contains essential nutrients and trace elements that promote healthy, abundant growth, ensuring bigger blooms and bumper crops. The pelleted, low dust format makes it easy and mess-free to apply—simply work it into the soil and water it in. This product is designed to give you convenience and excellent results in your garden, whether you're planting or boosting established plants.

The You Garden Fertiliser Discs are an innovative solution for gardeners looking to enhance their hanging baskets, planters, tubs, and window boxes. These discs provide a slow-release fertiliser that nurtures your plants over several months, ensuring they receive the nutrients they need for a healthy start. You will appreciate the reduced effort in watering during the summer months, making plant care much easier. Supplied in a re-sealable pouch, they are convenient to store and use whenever needed.

The Doff Bonemeal Fertiliser is a natural, ready-to-use solution that promotes strong and healthy growth in your garden. As a slow-release fertiliser, it ensures your plants receive a consistent supply of nutrients over time, making it ideal for organic gardening. You can conveniently use it all around your garden, whether you're growing root crops, peas, or beautiful flowers like dahlias and peonies. This versatility allows you to enhance the vitality of various plants effortlessly.

The Miracle-Gro Plant Food is specially designed for ericaceous, acidophilic, or lime-sensitive plants. Its slow release formula means you won't need to feed your plants regularly, saving you time and effort. With patented technology used by professionals, one application can nourish your plants for nearly six months. This product contains all the essential nutrients, ensuring your plants grow strong and healthy, potentially reaching up to twice their size.