After a year with hardly any duckweed (don’t ask me why) it’s back with a vengeance.
There are 8 ducks apparently hoovering it up for hours every day, but neither they nor the grass carp, which also feed on duckweed, make much difference when there’s this much on the pond. In the right conditions, according to the books, duckweed can double in 3 days.
We clear it by the very simple method of putting on waders, getting into the pond, and pushing a long 6 inch plank held on edge through the water, so the weed piles up in front of it. Enough of the plank is submerged to trap the weed in large quantities.
We push it to the bank and then scoop the thick accumulation of duckweed out with a grass rake, onto a large plastic sheet, allowing the water to drain back into the pond along with lots of tiny creatures. The plan is to reduce the duckweed to the point at which the ducks and fish can eat all the new growth andkeep it under control.
And here is the cleared pond. The green in the centre is the reflection of a bush in the clear water!