Production of acorns increases each year in proportion to the size of the oak tree's canopy. When oak trees reach near 100 years old, the acorn production slows to a yearly rate of 2,200. Even though oak trees have both male and female flowers, they still need neighboring oaks to pollinate.
http://www.gardenguides.com/115030-acorns-oak-trees.html
Oaks are divided into two groups: red oaks and white oaks. White oaks have leaves with rounded lobes. Their acorns are sweet and develop in six months. Red oak leaves are pointed with tiny bristles at the ends of lobes. Their acorns are bitter and take two years to develop, remaining overwinter on a defoliated tree.
http://homeguides.sfgate.com/kind-oak-tree-huge-acorns-73823.html
Acorns are nuts from oak trees. There are really, from a food aspect, two types of acorns: Spanish and North African acorns, and all the rest.
http://www.cooksinfo.com/acorns
Like other nut bearing trees, oaks produce a large amount of acorns; unlike other nut-bearing trees (pecan, walnut and hazelnut) the seed nuts cannot be consumed by humans or most animals because of the tannin in the seed. A huge quantity of acorns must be produced for an oak to propagate itself.
http://www.gardenguides.com/115030-acorns-oak-trees.html
Oaks have spirally arranged leaves, with lobate margins in many species; some have serrated leaves or entire leaf with smooth margins. Also, the acorns contain tannic acid, as do the leaves, which helps to guard from fungi and insects. Many deciduous species are marcescent, not dropping dead leaves until spring. In spring, a single oak tree produces both male flowers (in the form of catkins) and small female flowers.
https://en.wikipedia.org/wiki/Acorn_Tree
And another reader's question about acorns: We have a couple of huge oak trees and once again, they are raining acorns. The flower beds I have under these trees are coated with acorns. I am shoveling them up by the bucket loads. The grass around the trees are also covered with the nuts. Many have already started to send down a root.
http://www.dailypress.com/features/family/home-garden/dp-garden-qa102406-story.html
Huge oaks can live to be 200 years old. Acorns are the fruit of oak trees. Every fall these often massive, stately trees produce a rain of acorns that are quickly eaten, buried, or stored by a wide variety of animals. Acorn size varies from one-fourth inch to over 2 or 3 inches, depending on the species.
http://homeguides.sfgate.com/kind-oak-tree-huge-acorns-73823.html
Oak Trees not Producing Acorns (VA) I have a lot of Oak trees on my land. Only one of the trees produces acorns and they are tiny acorns. All the other trees, many are mature, have no acorns at all. I am curious if these Oaks are a special variety that does not produce acorns.
https://web.extension.illinois.edu/askextension/thisQuestion.cfm?ThreadID=20139&catID=195&AskSiteID=87
The acorns most worth bothering with are considered to be those of the oak tree known variously as holly, holm or ilex oak (Quercus ilex var rotundifolia -- aka var ballota) which grows all around the Mediterranean, including particularly north-west Africa, Spain and Portugal. These are long, cylindrical acorns.
http://www.cooksinfo.com/acorns
The leaves and acorns of the oak tree are poisonous to cattle, horses, sheep, and goats in large amounts due to the toxin tannic acid, and cause kidney damage and gastroenteritis. Symptoms of poisoning include lack of appetite, depression, constipation, diarrhea (which may contain blood), blood in urine, and colic.
https://en.wikipedia.org/wiki/Acorn_Tree
what tree has acorns?
Oak tree has acorns An oak tree has acorns.