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This winter has been exceptionally cold and full of snow and wind. With cold winters, our heat bills go up. One way many people try to spend less on those bills is to use wood-burning stoves and fireplaces to supplement the heat inside our homes through the winter months. However, if the firewood is stored incorrectly, insect issues can develop inside our homes.

Firewood storage

Firewood should only be brought into the home as it is needed — only a few pieces at a time. Many insects lay their eggs or pupate within trees prior to or just after they have been cut down for firewood, the insects may still be inside the wood when you bring it indoors. When the wood warms up in your home, the insects can emerge. These insects rarely cause an infestation in your home or cause damage to your furniture or home structure, but can be a nuisance when they get into your home.

Be careful of how you stack your wood outdoors, as well, to avoid problems with termites. If you stack your wood directly on the ground outdoors up against your home, you may be providing a highway for the termites to move from the ground to your home. The best practice for stacking firewood would be to stack it on a rack made out of steel or another material other than wood. Also, don’t stack your wood so that it is up against your home, shed, garage, or other building that termites can move into.

Insects in firewood

Carpenter ants are commonly found in decaying wood. They do not feed on wood, but they dig into decaying wood to form galleries for their nests. Carpenter ants are the large black or red ants often found on trees with decay because they are making a nest within that tree. In a house, carpenter ants can do damage if you have a leak which has caused wood in your home to decay. They can be brought indoors with firewood in which they were living.

There are many wood-boring beetles that are also found in firewood. Longhorned beetles, flatheaded borers and bark beetles are all found in trees and logs cut for firewood. Females of these beetles are actually attracted to dying, freshly cut or recently killed trees to lay eggs on the wood. These beetles can emerge in your home but don’t usually cause problems in the wood products found within your home.

One common structure-infesting pest, the powderpost beetle, can get into your home, but they only lay their eggs on bare, unfinished wood. Wood that has been varnished, painted or sealed is safe unless exposed surfaces appear.

Using wood ash in the garden

Another issue I see with fireplaces is in the garden. People use the wood ashes on their gardens because the old saying is that it is good for the soil. It is true that wood ashes can be used on the garden. However, if the ashes are applied too often or too heavily it can damage the soil or plants growing in it. Ashes will raise the pH in the garden, making it more alkaline. However, in Nebraska soils it is not necessary to raise our naturally high pH. Adding nutrients to make the soil pH too high can be harmful for plant growth. Most Nebraska soils have a pH of 6.5 or higher and Illinois Extension recommends avoiding using ashes in your garden with this pH level. It is best to first get a soil test to know where your levels and your pH are at before you add ashes or any fertilizer to your garden. If you could benefit from ashes, only apply a little to the garden and use the rest in your compost pile where the nutrients can be beneficial.

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If you have any further questions please contact Nicole Stoner at (402) 223-1384, nstoner2@unl.edu, visit the Gage County Extension website at www.gage.unl.edu, or like my facebook page at http://www.facebook.com/NicoleStonerHorticulture and follow me on twitter @Nikki_Stoner.

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