Help! Waterlogged raised bed killing plants
jenniferavril Posts: 30
We live in a new build and have had significant problems with waterlogging in the sloped garden. After extensive, very good and well executed drainage which is connected to the waste water pipes (including a silt trap), flagging the worst areas and building raised beds around the edges, it seems there is still a serious problem at the bottom of the beds/slope. The natural earth beneath is compacted clay but the beds were filled with high quality soil, but are now drenched. We get a lot of water from our uphill neighbours, especially since they flagged most of their garden and put plastic grass on the rest.
At the weekend I dug up the mature evergreen fern I'd planted at the end of summer to try and drink up some of the moisture, but it had died. When I pulled it out, it was clear why (see pics). It came out complete in one pull with a suction noise because it was soaking wet. What on earth can I do about this, given there's nothing more we can do to improve drainage and the conditions are clearly far too wet for plants as it's now just standing water? The hole is maybe only half a foot deep, if that. Seems we've wasted a lot of money on these beds.
You could plant plants suitable for bog gardens!
Full length of the bed, gives an ok idea of the slope but I'd say it's a bit steeper than that in reality. Flagged area with bins directly next to the bottom. It's clear from the wet wood how much water is there.
"Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
To try and give an idea of drainage (don't know how to rotate first photo) - there is some under that bed but it starts about halfway down, all the pipes are connected together and into the main drain. Water still collects in that corner at the bottom behind the gate despite there being further drainage downhill of it. Is there a way to add a pipe at the bottom, given I've nowhere to connect it to? This was done June 2021.