Cover the soil you depend on
Mulch moderates temperature and moisture at the soil surface — where roots, fungi, and irrigation meet. Thin decorative chips will not protect a bed that radiates heat by mid afternoon. Aim for a continuous blanket: roughly five to eight centimetres of coarse material on open beds, topped up where wind and birds scatter it.
Mulch application
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Cover completely
Patchy mulch creates a heat mosaic — bare spots become the weakest plants.
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Keep crowns clear
Pull mulch back from soft stems and tree trunks to prevent collar rot.
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Water under the blanket
Deep soaks less often; daily sprinkles on dry chips waste water.
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Renew what breaks down
Ramial chip, straw, leaves — plan a local supply rather than endless bag purchases.
Edible LandscapesIf you can see dark soil baking in full sun at two o’clock, you are already behind.
Paths matter too — bare compacted alleys radiate heat onto neighbouring beds. Wood chip paths, living ground cover, or light-coloured gravel reduce edge stress.