Minnesota First Detectors What’s in Your Woodpile?

Minnesota First Detectors Firewood Regulations EAB quarantine = restrictions on regulated articles Hardwood firewood = regulated article Regulated articles cannot be moved out of quarantined areas unless accompanied by a MDA certificate

Minnesota First Detectors Firewood Regulations Quarantined Counties

Minnesota First Detectors Firewood Regulations Quarantined Counties

Minnesota First Detectors Firewood Regulations MDA certificates require an active compliance agreement with the MDA or USDA Under the conditions of a compliance agreement, certificates may be issued for firewood that has been heat treated to specific temperatures in a kiln to render it safe MDA certified firewood is allowed to move freely around the state

Minnesota First Detectors DNR-approved Firewood Required on State- Owned Land DNR lands have additional firewood regulations. Regardless of any quarantines, firewood must be either: Obtained from a firewood distribution facility on State-owned land, or Obtained from a firewood dealer approved by the DNR commissioner (with receipt)

Minnesota First Detectors

Softwood versus Hardwood Softwoods have Tracheids (fibers), No Vessels (pores). Many have Resin Canals. Resin Canals

Minnesota First Detectors Softwoods versus Hardwoods Hardwoods have Fibers and Pores Pores

Minnesota First Detectors Ring Porous versus Diffuse Porous Large Pores in Earlywood and Small Pores in Latewood = Ring Porous Hardwood Large, obvious lines are Earlywood. Smaller,darker heartwood or lighter sapwood lines are Latewood.

Minnesota First Detectors Ring Porous Wood: Black Ash

Minnesota First Detectors Ring Porous Wood: Green Ash

Minnesota First Detectors Ring Porous Wood: Bur Oak

Minnesota First Detectors Ring Porous Wood: American Elm

Minnesota First Detectors Semi Ring Porous: Black Walnut

Minnesota First Detectors Ring Porous versus Diffuse Porous Pores about same size and distributed evenly throughout growth ring = Diffuse Porous.

Minnesota First Detectors Diffuse Porous Wood: Basswood

Minnesota First Detectors Diffuse Porous Wood: Boxelder

Minnesota First Detectors Diffuse Porous Wood: Big Toothed Aspen

Minnesota First Detectors “Other” Features: Elm Bark Cross-Section Layered Bark of American and Rock Elm

Minnesota First Detectors “Other” Features: Long-Grain of Elm

Minnesota First Detectors “Other” Features of Oak: Rays Rays

Minnesota First Detectors Versus, No Rays in Ash Cracks or Checks, but not Rays

Minnesota First Detectors “Other” Features: Elm and Hackberry Both Have Wavy (tire track) summerwood Hackberry American Elm

Minnesota First Detectors “Other” Features: Elm and Hackberry Hackberry has Corky Ridges on Bark, no Layered Cross-Section

Minnesota First Detectors “Other” Features: Red vs. White Oak Sodium Nitrite turns White Oak Heart Wood Blue to Purple

Minnesota First Detectors “Other” Features: Black Walnut Medium brown to dark chocolate heartwood.

Minnesota First Detectors Let’s Quiz the Log Splitter!

Minnesota First Detectors Which log is hardwood?

Minnesota First Detectors Which log is hardwood? 1. Log on the left 2. Log on the right Response Counter

Minnesota First Detectors What is this?

Minnesota First Detectors What is this? 1. Oak 2. Ash 3. Walnut 4. It’s hardwood; that’s all I need to know. 5. I don’t know. Response Counter

Minnesota First Detectors What is this?

Minnesota First Detectors What is this? 1. Maple 2. Oak 3. Walnut 4. Pine 5. Don’t know. Response Counter

Minnesota First Detectors What is It?

Minnesota First Detectors What is it? 1. Hackberry 2. Chokecherry 3. Crabapple 4. River Birch 5. Chokeberry Response Counter

Minnesota First Detectors What is It?

Minnesota First Detectors What is it? 1. Birch 2. Cottonwood 3. Big-Toothed Aspen 4. Silver Maple 5. Black Cherry Response Counter

Minnesota First Detectors What is It?

Minnesota First Detectors What is it? 1. Black Walnut 2. Buckthorn 3. Bur Oak 4. Boxelder 5. Ironwood Response Counter

Minnesota First Detectors What is It?

Minnesota First Detectors What Is It? 1. Cottonwood 2. Green Ash 3. Hackberry 4. Elm 5. Linden Response Counter

Minnesota First Detectors What is It?

Minnesota First Detectors What is it? 1. Elm 2. Boxelder 3. Silver Maple 4. Ironwood 5. Linden

Minnesota First Detectors What is It?

Minnesota First Detectors What is it? 1. Black Pine 2. Black Cherry 3. Austrian Pine 4. Douglas Fir 5. White Cedar

Minnesota First Detectors What is It?

Minnesota First Detectors What is it? 1. Linden 2. Sugar Maple 3. Black Ash 4. Elm 5. Green Ash

Minnesota First Detectors