Nettle tea is easy to make and is a great tonic for plants. Chop fresh nettle stems and pack them in to a bucket, covering with water. Cover with a stone or slab to keep the nettles submerged in the water. Leave it for 2-3 weeks. The resulting feed will smell foul, but is dynamite for plants as it’s full of nutrients. To use, dilute ten parts water to one part nettle feed. This will be particularly beneficial for leafy plants such as brassicas since it’s nitrogen rich. Fruiting crops like tomatoes will benefit more from a potassium rich feed like that made from comfrey. The process (and dilution rate) is the same to make comfrey tea.