Burn Season is upon us!

March is typically the start of "prescribed burn" or "ecological burn" season for natural land managers. Fire is the easiest way to manage many natural lands, as it clears out accumulated vegetation and keeps invasive brush and weeds in check.

Unlike native plants, non-native species tend to have shallow root systems that are more vulnerable to the effects of fire. Native plants can easily withstand even an intense burn on the surface, because their roots stretch down 5-15 feet.

I have heard questions raised about whether ecological burns contribute to global warming by releasing carbon into the atmosphere. While there is a carbon release during the burn, the fact is that natural areas sequester (store) much more carbon in the soil through their deep and dense root systems than what is released during a burn.

As much as 90% of a prairie plant's biomass (roots, stems and leaves taken together) is stored under the soil surface in the root system! So, while there may be a short-lived boost in carbon released during a burn, over the course for the following year season when the plants are growing and continuing to build their root system, a much greater amount will be stored in the soil.

Unfortunately, in the unincorporated areas of McHenry County, the decision has been made that while natural area managers can burn prairies and wetlands in March, they cannot burn any accumulated brush piles until open burning season in April & May if the brush piles are within 500' of a residential dwelling.

Pace it off, and you will see that 500' is quite a distance! In my Harvard neihborhood, 500' would be more than two blocks away! This ruling by the Planning & Development department will hamper management of these natural areas. In addition to an IEPA burn permit, the county now requires a county burn permit (which must be applied for at least 10 days prior to the burn), and if there are brush piles on the property, the burn plan must include provisions for protecting the brush piles from burning while the area around them burns.

As more developments are proposed to have natural lands within them, the use of ecological burns is likely to become more common, not less. It is customary during the management of natural lands to cut invasive brush in the winter, and then burn the area in the spring (usually as early as March, but no later than mid April because desireable plants are often growing by then). The accumulated brush piles are typically burned down during the ecological burn. This just makes sense.

I think it is a ridiculous rule! As you can see from the photo at top, burning a meadow in the spring can generate a lot of smoke, just as burning a brush pile can. How is it okay to burn the wetland in March, but not the associated piles of brush in the wetland? Both are part of ecological management of a natural area!

Also, consider this, when TLC conducts an ecological burn of a natural area: we have a permit from IEPA and the county; we notify the local fire department and dispatch; we take steps to notify neighbors; we have at least 6 people to participate in the burn, including at least one experienced burn leader; we only burn if the weather conditions are appropriate (wind, humidity, etc); and we have safety equipment including rakes, shovels and backpack water sprayers to manage any problems.

When your neighbor decides to burn his pile of landscape waste in April, he may only bring along a case of beer. But that's okay in McHenry County, since it is open burning season!