Wildlife in your Garden

The cut (canal) back of my flat is covered in this stuff at the moment, think it's duck weed?, don't seem to upset the local Geese though
View attachment 266016

My little back garden pond is the same at the moment.
Duckweed is a pig. If you have it on a garden pond get rid, but you'll need to do it daily for weeks as it regenerates very quickly. It stops sunlight penetrating the lower layers, thus preventing photosynthesis further down the water column. The creatures that survive off submerged plants therefore suffer. Deoxygenation is also quite likely.
 



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