
Today GM is going to continue his attempt to help you lose your tree blindness by teaching you a little bit about some of the mightiest trees around: oaks.
Oaks are one of the larger groups of trees that you might find on Georgetown streets. They range from towering giants to far more modest species. This list probably won’t cover every single variety you’ll find, but it will cover most.
The first thing to look for to identify an oak is acorns. But if it’s not the right season for acorns, look for the leaves. The basic oak leaf is fairly easy to identify. It looks like this:

Different variations on this basic shape distinguish between many of the more common oak species. But some oak leaves look nothing like this. They are identifiable by other features described below.
The first thing to say is that all oaks fall into two large groups: white oaks and red oaks. This isn’t really something you need to know to identify specific species, but it’s helpful in understanding how they break down.
White Oak
There are dozens of tree species within the white oak group. But only a handful of those are likely to show up in Georgetown. Confusingly, one of those species is called a white oak (which is different than the larger white oak group). Like the larger white oak group, the white oak species has rounded lobes like this:

White oaks are slow growing giants. Between this and their massive mature size, they don’t get planted in street tree boxes very much. Continue reading →
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