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Step 1
Examine the husk for cracks. Burr Oak acorns are larger than those of most oak species. Don't pick up any cracked acorns as rain and pests are likely to have spoiled the kernel.
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Step 2
Shake the acorn to see if the kernel is loose. If the kernel rattles around quite a bit, the Burr Oak acorn will probably not grow, as the acorn has dried out or is shriveled.
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Step 3
Look closely for holes in the shell and husk. These could be cause by pests or by interior rot.
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Step 4
Take the largest acorns. The larger Burr Oak acorns are the healthier ones overall. A large plump unblemished acorn will also have the greatest chance to produce a strong Burr Oak.
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Step 5
Discard any acorns that have darkened or turned black. The acorn should be a nice solid tan color.







