How to Make Stinging Nettle Fertiliser at Home
You know those pesky nettles that always seem to pop up where they are not wanted? What if I told you they could be turned into something incredibly useful for the garden?
This is a recipe I learned from my cousin Laura, who runs the lovely Meadowbrook Nursery from her home in Kildare. She is full of brilliant gardening ideas, and when we were developing new prairie style gardens last year, she suggested I try making a homemade nettle feed to give the ornamental grasses a boost.
So I put on my gloves, grabbed my clippers, and went on the hunt for nettles. Having so many goats and animals around made the search a little trickier than I expected, but I eventually found enough to fill a small barrel.
Why I Wanted to Try It
I have always loved gardening methods that feel simple, practical, and connected to the land around you. There is something very satisfying about taking a plant that most of us pull out and discard, and finding a way to turn it into something useful.
This recipe felt exactly like that. Low cost, easy to make, and rooted in the kind of slower gardening I love most.
What You Need
You do not need anything fancy to make this fertiliser. Just a few basics:
Rubber gloves
Fresh nettles
A barrel, bucket, or large container
Water
Clippers or secateurs
Something to loosely cover the top
A sieve or strainer
Containers or bottles for storage
The rubber gloves are especially important. Nettles have a way of getting through ordinary gardening gloves, so a good pair of rubber gloves makes the job far easier.
How to Make Stinging Nettle Fertiliser
Once I had gathered the nettles into the barrel, I used my long handled clippers to chop them up. I had read that bruising the leaves helps the process along, and this felt like the easiest way to do it.
After chopping the nettles, I was left with around half a barrel of leaves and stems. I topped it up with water and left it to sit for two weeks to ferment. I loosely covered the container to stop anything from falling in and to help reduce evaporation, as I was making it during a particularly warm spell in summer.
After the two weeks were up, I strained the liquid and bottled it for storage. When using it in the garden, I diluted it at roughly one part feed to ten parts water. One barrel ended up giving me more than enough to last the season.
I will admit, I was a little sceptical at first. It seemed almost too simple to make much of a difference.
How I Used It in the Garden
I used this homemade stinging nettle fertiliser around much of the garden, but the most noticeable difference was in our newly planted leylandii hedge. What we thought would take two years to fill out happened in a single season.
The grasses in the prairie garden also put on really strong growth, and many of my roses seemed to respond well too. It was one of those moments in the garden where something simple ended up being far more effective than expected.
Why I Love This Garden Trick
What I love most about this method is how resourceful it feels. It takes something unwanted and turns it into something genuinely useful. That kind of gardening always feels especially rewarding to me.
It is also a lovely reminder that gardening does not always have to involve expensive products or complicated routines. Sometimes the simplest methods are the ones that work beautifully and stay with you for years.
A Few Helpful Notes
The smell becomes quite strong while the nettles are fermenting, so it is best to make this well away from the house.
Always wear gloves when handling nettles, and use a container you are happy to keep for garden jobs.
If you are trying it for the first time, test it on a small area first and see how your plants respond.
Final Thoughts
This has become one of my favourite homemade garden recipes. It is simple, practical, and such a satisfying way to make use of something that would otherwise just be thrown away.
If you have nettles growing where they are not wanted, this is a lovely way to turn them into something useful. It is one of those old fashioned garden ideas that feels both grounded and rewarding, and I know it is a method I will come back to again and again.
If you try it in your own garden, I would love to hear how you get on.