In spring, a single oak tree produces both male flowers and small female flowers, meaning that the trees are monoecious.
| FactSnippet No. 2,274,482 |
13 Facts About Oak tree
2.
Oak tree wilt, caused by the fungus Bretziella fagacearum is a lethal disease of some oaks, particularly the red oaks.
| FactSnippet No. 2,274,483 |
3.
Leaves and acorns of the oak tree are poisonous in large amounts to livestock including cattle, horses, sheep, and goats due to the toxin tannic acid, causing kidney damage and gastroenteritis.
| FactSnippet No. 2,274,484 |
4.
Oak tree planking was common on high status Viking longships in the 9th and 10th centuries.
| FactSnippet No. 2,274,485 |
5.
Oak tree bark is rich in tannin, and is used by tanners for tanning leather.
| FactSnippet No. 2,274,486 |
6.
Oak tree galls were used for centuries as a main ingredient in iron gall ink for manuscripts, harvested at a specific time of year.
| FactSnippet No. 2,274,487 |
7.
Oak tree is a national symbol from the Basque Country, especially in the province of Biscay.
| FactSnippet No. 2,274,488 |
9.
Oak tree leaves are traditionally an important part of German Army regalia.
| FactSnippet No. 2,274,490 |
10.
Oak tree leaves are embroidered onto the covers worn by field grade officers and flag officers in the United States armed services.
| FactSnippet No. 2,274,491 |
11.
Oak tree is used as a symbol by a number of political parties.
| FactSnippet No. 2,274,492 |
12.
Thor's Oak was a sacred tree of the Germanic Chatti tribe.
| FactSnippet No. 2,274,493 |
13.
Jurupa Oak tree – a clonal colony of Quercus palmeri or Palmer's oak found in Riverside County, California – is an estimated 13,000 years old.
| FactSnippet No. 2,274,494 |