When it comes to feeding your plants, there are several ways of doing it. There are multi-purpose general feeds that can be used on all plants all round the garden. But there are some situations where a specific feed, supplying a specific plant nutrient, are needed. For instance, when planting in the garden you should use a feed that is high in phosphorous to encourage strong root growth and fast establishment. Where plants aren’t flowering well, a high potash feed will encourage more flowers.