Burning things like trees, residuals crops, fertilizer bags, livestock bedding, and even garbage can be a routine part of operating a farm. But, navigating Marylandâs laws governing open burning can be confusing, and costly if you get it wrong. It is always prudent to check with local authorities before you burn, but hereâs some information that can help you know what to ask them. Maryland Department of the Environment Regulations Must Allow It All open fires in Maryland are regulated under Maryland Department of the Environment Air Quality Regulations. Depending on whatâs being burned, where and how itâs being burned, and also why itâs being burned, Maryland Department of Natural Resources and Maryland Department of Health may also be involved, as may other local officials.