Organic Gardening Guru|Tips For Those Growing Their Own Food Organically
Dec
14
asked:
The word “mulch” comes from the old English word “melsc” – meaning rotten hay. In today’s language it has come to mean any material that covers the soil to preserve moisture content, prevent soil erosion and inhibit weed growth. For organic gardening I choose materials that will break down over time, feeding my plants and contributing to the amount of humus in the soil.
Many materials are suitable to use as mulch, such as: leaves, straw / hay, sawdust, gravel / rocks, paper / cardboard, grass clippings, carpet underfelt and even plastic. Each one has its own benefits and disadvantages.
Dark mulches warm the soil, whereas light coloured mulches will keep the soul cooler. In a cool climate a light straw mulch will hold back the development of many hot season vegetables – so take care with your choice of mulch and the time of year you apply it.
I’ve heard it said that mulches can be a refuge for problem garden pests, but nature balances this with enough predators to consume any rise in pest numbers.
Leaves are the most natural mulch of all. However most of the nutritional content has been taken from the tree before the leaf falls to the ground. Many leaves contain tannins and some have growth suppressants (eucalypts & pine needles for example), so it’s better to either add them to your compost heap or place them in a wire container and allow them to decompose for a year or so and become leaf mould, them use as mulch.
The word “mulch” comes from the old English word “melsc” – meaning rotten hay. In today’s language it has come to mean any material that covers the soil to preserve moisture content, prevent soil erosion and inhibit weed growth. For organic gardening I choose materials that will break down over time, feeding my plants and contributing to the amount of humus in the soil.
Many materials are suitable to use as mulch, such as: leaves, straw / hay, sawdust, gravel / rocks, paper / cardboard, grass clippings, carpet underfelt and even plastic. Each one has its own benefits and disadvantages.
Dark mulches warm the soil, whereas light coloured mulches will keep the soul cooler. In a cool climate a light straw mulch will hold back the development of many hot season vegetables – so take care with your choice of mulch and the time of year you apply it.
I’ve heard it said that mulches can be a refuge for problem garden pests, but nature balances this with enough predators to consume any rise in pest numbers.
Leaves are the most natural mulch of all. However most of the nutritional content has been taken from the tree before the leaf falls to the ground. Many leaves contain tannins and some have growth suppressants (eucalypts & pine needles for example), so it’s better to either add them to your compost heap or place them in a wire container and allow them to decompose for a year or so and become leaf mould, them use as mulch.
