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Landscape Gardening

Growing shrubs on pure compost

My previous gardener has filled my garden bed around my garden boundary with 100% compost approximately 30cm deep. He thought I would just plant some flowers but in fact I was trying to plant hedges and shrubs for the last 12 months to a very disappointing results. I was told it could be to do with the 100% compost as it does not hold water.

Should I dig up all the compost and replace with topsoil?

2 Answers from MyBuilder Landscape Gardeners

Hi yes I would be tempted to take at least half of the compost out and replace with topsoil. Give it a good dig over, mix well and replant. You could then use the rest of the compost as a mulch/top dressing every few months to keep the nutrient levels up or just spread the excess compost on your other borders or containers.


Answered 24th Apr 2018

I believe your gardener was wrong. Ideally you want a 60/40 mix of topsoil/compost in my opinion this works well and better. Full compost is never a good idea.


Answered 1st Jan 2019

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