birds can transport a lot of nutrients. I noticed a lot of Prunus Padus and Cornus sanguina in the nearby park that the pigeon eat. Now the built a nest in my pergola, so I'm expecting miracles 😂
Very unscientific, but one may dream, right?
If you don't get it from elsewhere, then from lower layers with deep rooting mulch plants, which was already mentioned I saw.
Have fun!
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