Plants can’t get much more unique than the ginkgo tree


Some botanists call them living fossils. Ginkgo biloba is the only species remaining from a Division of plants that went extinct thousands of years ago. It is one of the most primitive plants still in existence, but it thrives in urban environments. It tolerates pollution, some shade, and periods of dryness.
Ginkgoes once inhabited much of the world, but the last ice age wiped them out everywhere but in China. Even there they are now extinct in the wild.
Once you see one you’ll never forget it. The leaves are like those on no other plant. They are fan-shaped and most are split in the middle, hence the species name biloba.
The tree got its common name, Maidenhair tree, because some thought the fan-shaped leaves resembled fronds of Maidenhair fern. Leaves are borne on rounded stem spurs. Fall foliage is a gorgeous golden color.
Ginkgoes are seed bearing plants but they don’t produce true fruits. They have grape sized structures surrounding the seeds that resemble fruits though. Pulp is soft and similar in color and texture to that of a ripe wild persimmon. These false fruits are best avoided as they contain substances similar to urushiol, the irritant found in poison ivy, oak and sumac.
These fruit-like structures are only found on some trees. Ginkgoes are yet another one of those dioecious plants. Male trees produce no seeds, which makes them far more desirable for landscape use.
Most ginkgo trees found in nurseries are now grafted as to eliminate the seed mess, which can be plentiful, unsightly and smelly. When fruits decompose they produce butyric acid, which is the product formed from rancid butter.
Female trees are not all bad though. When properly processed the nutlike seeds are edible and a delicacy in Japan and China. They somewhat favor chestnuts. When it comes to herbal medicine ginkgo is one of the most sought after species anywhere.
Ginkgo nuts have been found to reduce cholesterol. Seed and leaf extracts are routinely prescribed by herbalists to improve brain function. Many holistic preparations to combat Alzheimer’s contain ginkgo as a major ingredient.
Additionally, much research is ongoing to determine ginkgo’s influence in fighting certain types of cancer. Antioxidant levels are high. However, eating too many seeds can be toxic to nerve cells and cause breathing difficulties, so don’t go hog wild.
Ginkgo interacts with many common prescription and non-prescription drugs. Ibuprofen is a common over the counter anti-inflammatory medicine and it can slow blood clotting. Ginkgo does too, so taking them together liberally could cause bruising or internal bleeding. The same can be said for aspirin and many prescription blood thinners like Plavix and Coumadin.
Ginkgo extracts can also negate the effects of Xanax, which is used to treat anxiety. The list of medications that interact with ginkgo is as long as my arm.
Ginkgo draws miracle claims by some and warnings by others, but I’m more into its use for aesthetic reasons. They are adaptable, well-shaped, containable shade trees. Ginkgoes are a conversation plant.

Specimen in the NCSU Arboretum showing the distinctive leaves

Specimen in the NC State University Arboretum showing the distinctive leaves

Female ginkgo loaded with fruit

Female ginkgo loaded with fruit

Ginkgo seeds

Ginkgo seeds

Golden fall foliage

Golden fall foliage

 

Ted Manzer teaches agriculture at Northeastern High School.

Advertisements

About tedmanzer

I grew up in Old Town Maine and got a B.S. at the University of Maine in Plant Sciences/ minor in Botany. From there I moved to West Virginia and earned a M.S. in Agronomy at WVU. I also met my wife there. She grew up in rural WV as the daughter of tenant farmers who raised cattle and hogs. Their lifestyle at times was one of subsistence and I learned a lot from them. I've always been a foraging buff, but combining my formal botanical knowledge with their practical 'Foxfire-type' background opened up my eyes a little more. I now teach agriculture to high school students at Northeastern High School in Elizabeth City, NC. My wife teaches with me and we make a great team. I also write a weekly nature/foraging column for the local paper (dailyadvance.com) and frequently publish articles in several other newspapers in northeastern North Carolina. I also have written several Christian nature/adventure novels that I plan to publish eventually. One is a five book family saga I call the 'Forgotten Virtues' series. In the first book, Never Alone, a young boy comes of age after his father dies in a plane crash, and he has to make it alone. Never Alone is now available in paperback, Kindle and Nook. The second book, Strange Courage, takes Carl from his High School graduation to his recovery from a nasty divorce. The third book, Second Chances, takes Carl from his ex-wife's death and the custody of his son to his heroic death at age 59. The fourth book, Promises Kept, depicts how his grandchildren react and adjust to his death. In the final book, Grandfather's Way, his youngest and most timid granddaughter emerges from the shadow of her overachieving family and accomplishes more in four months than most do in a lifetime. I use many foraging references with a lot of the plants I profile in these articles in those books.
This entry was posted in foraging and tagged , , , , , , , , , , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s