rootgrow? Seed & Bulb companion is a specially formulated blend of UK origin mycorrhizal fungi that will benefit virtually all seeds, plants and bulbs (except brassicas, rhododendrons, azaleas, heathers, cranberries or blueberries). In a matter of weeks seedlings will develop a huge secondary mycorrhizal root system, supporting your plants for their entire lifetime, supplying nutrients that will greatly enhance flowering and fruiting. - Increased resistance to damping off - Only one application required - Healthier and more even growth - Lasts lifetime of plant - Better uptake of nutrients leading to better flowers, fruit and vegetables