Delicious, Erratic Acorns
Our back deck at Winding Pathways is an outstanding vantage point for watching butterflies, birds, and even our evening aerialist bats. The deck is perched over a deep, cool ravine with a stately black oak hovering above. That can be a problem.
In most autumns our black oak cascades acorns down to the ground and our deck. Removing them takes aggressive sweeping. Despite the hassle we love acorns.
Oaks
Acorns are, of course, the seeds of oak trees. Hundreds of oak species live across much of the northern hemisphere. They can be a little tricky to identify since oaks sometimes hybridize and look like a blend of two or more species. Many people use leaf shape to identify trees, but oaks may throw a curve. Often leaves, called sun leaves, up on the top of an individual tree are smaller and may have a somewhat different shape than those down lower on the same tree. It can be confusing.
There are two general oak types, the white and red oak groups. White oak type trees include species commonly called white, swamp white bur (sometimes spelled burr), chinkapin also spelled chinquapin, and chestnut oaks. Their leaves have rounded lobes and they produce large acorns with low acid content. Red oak type trees include species commonly called red, black, and pin oaks. Their leaves have pointed lobes and their acorns are usually small and laden with bitter acid.
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- Acorns from the black Oak are small and bitter.
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- Oaks have different shaped leaves
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- Century Oak Tree
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- Oak leaves turn russet in autumn.
Acorns
Acorns are nature’s gift to many wildlife species and people. Few seeds are as abundant, large, and nutritious as acorns. Squirrels, chipmunks, muskrats, woodchucks, deer, bears, blue jays, wild turkeys, and a host of other animals gorge on them. The calorie-rich nuts help wildlife put on fat that helps them survive the coming winter.
But, there’s a problem. Oaks are erratic acorn producers. As a general rule, the white oak types only create a heavy crop every few years. Red oak type trees are more reliable but still sometimes skip a year of seed production. Sometimes few oaks in a vast area will produce acorns while an individual tree here and there will be loaded. Find a heavy acorn bearer in a scare year and you’ll have the company of many animals feeding on the nutritious nuts. Part of the reason for erratic crops stems from pollination. Oaks are wind-pollinated and a long spell of rain when they bloom in the spring can dampen pollination and eliminate a crop that autumn.
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- Acorns set up in the spring
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- The white meat of an acorn.
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- Two kids check out the acorns on a branch
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- Iowa has many types of oaks
Acorns are a delicious human food that was relished by native people across the globe. To learn more about acorns and how to process them into food check out the Winding Pathways blog of August 2014 called Delicious Acorns.
