The cardboard will break down in the soil, which is another benefit of this technique. Sarah Beaumont, CEO and Content Director of Indoor Home Garden, explained that, alongside tackling weeds, the broken-down weeds will provide necessary nutrients to the soil, making it “the perfect ground for fresh plants of your choosing”.
Experts also warned that roots can grow through the cardboard, however this is only in certain conditions.
Melody said: “Firstly, the cardboard must be moist enough to allow the roots to penetrate it. Second, the cardboard should be placed in a place where there is no light or air circulation for it to be effective.”
This should prevent the plant from drying out before it has a chance to take root and begin growing.