Converting a Pond to plant bed.

Hi all,

One of my clients has a large pond that they now wish to fill in for safety due to new baby and the potential for disaster.

They are happy to have it converted into a plant bed, however the initial priority is water out and then filled with the solid stuff.

The pond is 10m diameter and 1.25m deep.

I have not dealt with this issue before but do wish to sort it for them.

My basic plan is:

  • Pump out water
  • Clear plant baskets, pump for fountain etc
  • Create drainage through liner ( break liner )
  • Fill base with ballast -compact down
  • Fill next layer Grade B top soil - compact down
  • Fill top layer Grade A top soil
  • Let it all settle
  • Plant out or add walkway to central seating area.

Any advice please, would this be a suitable approach.





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  • i think thats about right if it is a rubber liner make shore  you take chunks of it out rarther than just slitting it or the fork through it 

    it looks a nice pond a shame realy and i hope there is macanical access as there will be a lot of tonage infill 

    • PRO

      It is a shame it looks like a good pond . 

      Probably not a viable option at 10 M but i have seen bespoke steel pond covers made on site to prevent accidents occuring .  

      You may have already made provision for the pond life which might exist in there such as hibernating amphibians , newts in particular are protected .  

      If the pond is teeming with pond life a good site to visit is

      • PRO

        Thanks for the link.

        There is not much life in it however as it is drained we shall net and move any inhabitants to another larger wildlife pond thats also in the garden ( to be fenced off)

        • PRO

          Probably a lot more life in there than you realise. At least there is another pond. 

    • PRO

      Yes it is a shame it has to go its a fantastic pond.

      Luckerly there is room to carefully back a tipper up to it assuming the driveway can take the weight.....

  • PRO

    Seems a real shame to lose it - looks really nice.  Any chance you can persuade them to fence and net it?  A lot cheaper presumably and great for wildlife when the little one is older.

  • PRO

    Don't forget to get the electricity for pump and lights disconnected. 

  • Personally I would recommend they fence it off. I certainly wouldn't have anything to do with the destruction of a perfectly good pond - too few of them already!

  • PRO

    If my maths is correct 10 metre x10 metre x1.25 = 125 m3 that’s a hell of a hole to fill.please correct me  if wrong 

    years ago at hortic college we needed a thousand ton to build a large mound and the cheapest way was to ask a groundwork’s company for subsoil clay or ungraded dirt I.e soil with grass rubble gravel etc mixed up 

    it was a landfill cost to them to dispose so  they brought 50 x20 tonne loads for free and an excavator to mound it for free 

    they wanted rid for free for sure 

    then they gave us 20 ton topsoil for planting 

    it was for a hospice so good PR too but you may get a deal on similar for a hundred ton to bulk it out 

    • PRO

      Yes it will take alot to fill, as its a circle school days maths needed dusting off to use pi i.e radius squared 25m x pi 3.14xdepth 1.25m = 98.5m3 which is roughly £5k... 

      However a change of plan looks on the cards with a grate cover made up for this pond and we will fill the other larger pond and ideally with some of the matured compost from the massive amount there is there plus ballast, soil etc.

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