The gingko biloba’s uniquely fan-shaped leaves start out green but change to golden-yellow in the fall. Before the whole leaf turns golden, there is sometimes a stage during which the leaf is two-toned, with separate bands of gold and green. The common name “maidenhair” was inspired by the fan shape of the leaves, which reminds people of the maidenhair fern (Adiantum spp.). The bark on older specimens of the tree becomes deeply furrowed. The seeds, which are only present on female trees, and to a lesser extent the leaves, are toxic to humans and pets. They are also disease-resistant and tolerate urban pollution.
Light
Plant ginkgo biloba in an area that receives full sun to part shade.
Soil
The ginkgo is not fussy about soil type or most soil conditions and will tolerate both acidic and alkaline soil as well as compacted soil. It prefers well-drained sandy soil or loam with a pH in the 5.0 to 8.0 range. They are more tolerant of compacted soil than many other types of trees.
Water
Water as needed to keep the soil moist, provided the site is well-drained. Moisture is particularly important when the tree is young; it is relatively drought-tolerant at maturity.
Temperature and Humidity
Ginkgo bilobas are commonly grown in urban sites in many regions, proving their tolerance of a wide range of moisture conditions and temperatures. However, they can struggle in hot, dry climates.
Fertilizer
Young ginkgo biloboa trees can benefit from a spring feeding of tree fertilizer. For the amount, follow the product label instructions. Mature trees typically do not need to be fed.
Varieties of Male Ginkgo Biloba Trees
‘Autumn Gold’ (zones 3 to 8) is a popular male cultivar. It grows to 40 to 50 feet tall, with a spread of 25 to 30 feet and has a broadly spreading canopy.‘Saratoga’ (zones 4 to 8) has a similar size and shape to ‘Autumn Gold’. What makes this cultivar different is the V-shape of its leaves, which strays from the usual fan shape. ‘Fastigiata’ (zones 3 to 8) is another popular male cultivar and is a good choice if you want a tree that is narrow (column-shaped). It becomes 30 to 50 feet tall but just 10 to 15 feet wide.‘Princeton Sentry’ (zones 3 to 8) is also columnar but matures somewhat larger, at 40 to 50 feet tall and 20 to 30 feet wide.‘Fairmont’ (zones 5 to 8) is a tall, skinny tree, reaching at least 50 feet in height but just 15 to 18 feet across.‘Pendula’ (zones 5 to 8) is a good choice for a small space. It’s a slow-growing male cultivar that has a stocky build and reaches just 8 feet tall at maturity, with a maximum spread of 10 feet. While the cultivar name ‘Pendula’ usually suggests a weeping form, in this case, the tree is more umbrella-shaped.
Pruning
Many types of ginkgo start out narrow while young but then become quite wide as they age, growing into shade trees. You can slow down this process a little by pruning them while young so as to force them to produce a single leader. But a much better solution is to select a cultivar known to have a narrow shape. At the other end of the spectrum, they are also used for Japanese bonsai.
Propagating a Gingko Biloba Tree
Gingko can be propagated from cuttings. Here’s how it’s done:
Growing Gingko from Seed
While it is possible to grow a gingko from seed, the safest way to ensure you are growing a male tree is through cuttings, as described above.
Common Problems with Gingko Biloba Trees
The male trees are preferred (unless you have allergies), because they are fruitless. Female trees bear a fruit-like product, actually a seed ball. It not only emits a foul odor but also is slippery when it drops down on sidewalks or driveways. The problematic “fruit” is about the size of a cherry tomato.
Female Trees Drop Smelly Fruit
Cleaning up after female Ginkgo biloba trees is a high-maintenance task. Fortunately, all-male cultivars have been created through grafting. Buying one of these cultivars gives you a way to experience the beauty of the tree while avoiding the mess.
