• Christmas Tree Inspection and Certification
Christmas trees shipped outside the regulated area must be inspected and must be accompanied by proper certification. Much of Michigan lies within the area regulated under the two federal quarantines. Growers and shippers should consult USDA-generated maps and county lists to determine if their trees ...

• Interstate Shipping Certification Documents
Cut Christmas trees shipped outside the regulated area must have a Michigan Department of Agriculture certification.

• Required Treatments for Spruce, Fir and Douglas Fir
It has been shown that gypsy moth is capable of completing its development on spruce, fir or Douglas fir and may subsequently lay egg masses on those trees. Inspection alone is not enough to detect egg masses on these trees due to the dense nature of the needles and branches.