Liquid feed can be a quick fix if plants are looking a little undernourished, or a regular necessity for container-grown fruiting plants in flower. Directing nutrients in a liquid form straight at the roots of the plant makes them far easier to absorb.

I make my own liquid and comfrey feeds, or fertilizers, because they are useful substitutes for compost and the plant material can be added to the compost bin later, so nothing is wasted. Liquid feeds give an instant boost to container-grown fruiting plants, such as tomatoes, or plants that look undernourished and have pale leaves; the goodness from a top-dressing of compost, on the other hand, will take some time ...

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