If you take the stinging nettle season very seriously- as I hope you do- we previously mentioned a couple of ways to preserve them, but now it’s high time to transition with the plant as it grows. Personally I’ll never pick anything taller than my knee and here in Pittsburgh stop right around May 1st. After this point the tender leaves and stems will become courser as the stem elongates and she prepares to flower and set seed. Let’s let that happen and let the seeds drop too, then we can cut down the tall stalks to use as an all-purpose fertilizer for our gardens. We’ll be trying out in earnest this year making some fiber from them too, which we hope using this technique will produce some good results.
Stinging nettles contain a wide span of nutrients leafy green plants love such as potassium, phosphorus, calcium, and magnesium. By doing a basic ferment those nutrients are released for easier access. The liquid can be dumped at the foot of a plant or sprayed on the leaves for foliar feeding. This fertilizer is best for leafy green plants or plants in their growth stage, that is, before showing any signs of transitioning to flowering.
The process is easy. Cut down the tall nettles and stuff em in a bucket. Cover them with water, with rainwater being best, and let get good and stinky (outside naturally). Use anytime really. Depending on conditions we tend to start using it once the plant looks good and broken down and use a sprayer to foliar feed a lot of crops. It’s really satisfying to leave the farm behind in a cloud of stink.