what do plants grown in

If you want to get rid of those flagstones, just place an ad that they are free and come get them. A lot of people would use them to make walks etc.

 

Even if they are broken ??? Im thinking of telling him to just leave them in the trench as im worried he is talking rubbish and then i would get someone else to remove them. The trench is about 3mx3m and 6ft deep. Is that a lot of costly top soil to fill it ? he said about 6 tonnes

 

If 6 ft deep that makes about 18 cubic meters of soil; yes expensive and may need more than 6 tonnes of soil.

 

sorry i meant the hole was about 6ft deep according to him. Putting in the slabs has filled in hole thats about 6ft deep. I doubt he is putting 6ft worth of soil on top of the slabs but when they get compacted im not sure how much soil needs to go above them

 

Just a thought but if you got rid of the slabs and contacted one of those grab hire companies they might just let you have some soil on the cheap to fill the hole,it doesn't need to be top soil.
You could then get some topsoil to put about a ft or so over the top.

I think you need to look at finished levels before going to far.

 

I would probably just take out the top two feet of debris and fill over the remainder with topsoil.

 

Only trouble I see with that is the fill is going to keep sinking as it gets washed in between the slabs. You will be adding soil for quite a while as it settles.

 

Is there anyway to get around this issue ????

 

I thought it funny till i came across this
www.independent.co.uk › life-style › malcolm-mclaren A garden designer explains how to reuse old concrete, paving ...
22/06/2021 · Chamomile is easily planted around the crazy paving. Scleranthus and sagina, both drought tolerant, are also suitable and make lovely green mounds that spread through the paving,

 

@hi2u_uk

When the slabs are at the level you want put a strong geotextile over the slabs and then your soil. The geotextile will still allow water to drain through and restrict loss of soil particles. You will still get some loss and need to top up with soil but less

 

Agree, you wouldn't want to fill a hole that depth with top soil, it could end up being water logged.

I can understand why the landscaper has filled the hole with slabs, removing them to the tip and backing filling with that amount soil to fill the hole would of increased the costs sharply.

If they intend to plant shallow rooted plants, then as NigelJ has suggested a geotextile with a dumpy bag or two of top soil should be sufficient. They could go down the route of a raised bed, would add a feature to the garden if they intend to lay some flags down.

 

I've just been out to look and it seems that he has put in other rubble not just paving stones in the hole. Im very tempted to tell him to stop working now as im not sure about this way of filling it in . What im hearing is making me think that in the long time there will be problems. I doubt he is going to want to go and buy a geotextile membrane

Is 6ft a normal size depth for a pond. My neighbour has a pond and i don't think its 6ft deep

 

There isn't a body at the bottom, is there?