One of the trees to spring up after the fire in the Cavity Lake area is the Jack Pine. The Jack Pine needs fire to open its cones and release the seeds. The Jack Pine has a straight trunk and grows from 25 to 60 feet tall. The bark is dull red-brown irregulary divided into small scales. Pine cones are 1 1/2 inch long and contain good seeds for many years as long as the tree is vital. The seeds are designed by mother nature to be carried for in strong winds. The photo is from the MN DNR of the Jack pine needle. The Jack Pine can grow on poor soil and is shade tolerent.
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