How can I improve clay soil?

  • Erstellt am 2024-04-10 10:16:40

FrankChief

2024-04-17 11:21:03
  • #1
We had a very clayey or firm or heavy topsoil.

With the sand, we were able to loosen it so that infiltration is apparently now possible.

Only with 10 tons of sand, the soil is now too much and too high.
How can we properly lower the soil?
 

chand1986

2024-04-17 12:44:30
  • #2
Excavation = soil deeper or raise the entire rest (which will hardly be possible?). What can I say? You lose the excavated centimeters of additional volume for infiltration again. Possibly your measure has improved the rest so much that it is still better after excavation than before the sand addition. Otherwise, of course, it is annoying, but I see no alternative. The plan just wasn’t thought through to the end… happens.
 

FrankChief

2024-04-17 13:00:19
  • #3
Sand will eventually wash into the deeper sand layers over time, right?

What do you think, how long does it take for most of the sand to be washed into the deeper layers by rain, etc.?

If we remove the top layer (about 3-5 cm) at the end of the year or next year, is most of the sand already in the deeper layers?

Don't the grass roots also displace the sand or let the sand wash faster into deeper layers?
 

nordanney

2024-04-17 13:13:30
  • #4
It will mix. But that can take years.
 

chand1986

2024-04-17 13:14:32
  • #5

How does it get there? You said the layer underneath is clayey and dense. The sand doesn’t just flow in there within a year with some water.


Roots always loosen - the thicker and longer, the more so. But what is the plan here? Grass does not root very deeply into the clayey substance, rather with fairly thin roots. Afterwards, you have to remove the grass as well. Does that make sense?

If you want to try loosening plants, fill it up with strong-rooted annuals. Annual lupines go really deep. Yellow mustard also works. It grows fast, massively improves soil aeration, and in the end, you have green manure. After that, you can compost and remove the greenery if necessary.
 

FrankChief

2024-04-17 13:38:52
  • #6
we have sown lawn again

The idea was simply that in the future we just pull off the lawn probe (e.g., with a lawn probe cutting machine) and then are already 3-4 cm lower and it might already be enough or we remove a thin layer of soil again and then already have the perfect height
 

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