I folded the liner back on itself to create a lip. On the 'wet' side, I filled with pebbles and cobbles. On the 'dry' side, I packed soil so as to keep the lip in position. I then placed some cobbles and pebbles on the dry side so as to avoid there being one definite line between wet and dry. It's difficult to tell which of the pebbles and cobbles are 'in' the pond and which aren't.
I also dug down the 'dry' side to around 40cm and lay a pierced compost bag there before backfilling with soil so as to create an area that doesn't drain as well, i.e. a bog garden. The set up is thus that, if the pond overtops because of heavy rain (as it has done lately), it floods the bog area which will be planted up with things that love the moistness. This means that I can plant marginals in and out of the pond so, for instance, I have some sedges inside the liner on a shallow shelf and some of the same in the bog area, further blending the two and avoiding any delineation.
Here are a few photos from books I've read that might give you some inspiration:
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I folded the liner back on itself to create a lip. On the 'wet' side, I filled with pebbles and cobbles. On the 'dry' side, I packed soil so as to keep the lip in position. I then placed some cobbles and pebbles on the dry side so as to avoid there being one definite line between wet and dry. It's difficult to tell which of the pebbles and cobbles are 'in' the pond and which aren't.
I also dug down the 'dry' side to around 40cm and lay a pierced compost bag there before backfilling with soil so as to create an area that doesn't drain as well, i.e. a bog garden. The set up is thus that, if the pond overtops because of heavy rain (as it has done lately), it floods the bog area which will be planted up with things that love the moistness. This means that I can plant marginals in and out of the pond so, for instance, I have some sedges inside the liner on a shallow shelf and some of the same in the bog area, further blending the two and avoiding any delineation.
Here are a few photos from books I've read that might give you some inspiration:
It's in my signature beside the avatar
But yes- get yourself up north for some exploring. Anywhere from Loch Lomond 'up'. Glencoe, Fort Bill, the NW Highlands, Assynt etc
I live in west central Scotland - not where that photo is...