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“The heat that builds up underneath it will kill most garden pests and their eggs, weeds, parasites and a host of other harmful microorganisms.”
After removing the plastic, lightly cultivate the soil to ensure it is ready for planting.
The gardening pros also instructed gardeners to “selectively” and “aggressively” thin out the plants they have.
They said: “This is essential because small, weak seedlings are more likely to become diseased.
“They, in turn, may pass the problem on to healthy plants.
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