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Acacia Trees

Q.Can I use Vermiculite to aerate soil in a raised garden bed?

Zone Melbourne South East, 3978. New building block. | Anonymous added on January 29, 2020 | Answered

I have an L shaped raised garden bed where one side is fine but the other section is always damp. It’s about a year old and I had planted Acacia Limelights but they have recently died. I also have a few Leucodendron (Jolly Jokers) that are not happy. I’m not sure if it’s a drainage problem or not. Could I possibly add Vermiculite to the soil to aerate it or would you suggest something else? I really don’t want to have replace the soil! Thank you, Barbara.

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Certified GKH Gardening Expert
Answered on January 29, 2020

Usually something like peat moss or compost is added to soil to improve the drainage. The Acacia Limelight needs well-draining soil so that might have been why it succumbed. Make sure you are choosing plants that need part-sun since this is a morning sun situation. Here is an article about amendments to improve drainage:

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