So, I asked garden experts to share the hidden fire risks in a garden during a heatwave, and these are the five things they said. So, if you’re looking to heatproof your garden this summer and maintain a safe environment, here are five risks you need to be aware of. Garden mirrorsWhile garden mirrors can be used as a clever trick to make your garden look bigger , they can also increase your risk of fire during periods of hot, dry weather. (Image credit: Future PLC/Dominic Blackmore)‘Outdoor electrical equipment is another area that deserves attention. Garden wasteRight now, gardens will be very dry, making your garden waste, for example grass cuttings, more flammable.