The Cultivation and Management Techniques of Ginkgo Street Trees
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Ginkgo biloba is a highly adaptable tree species with a broad range of cultivation areas, making it an ideal choice for street planting. Proper cultivation techniques are essential to ensure its healthy growth and long-term survival. Here are some key practices for growing Ginkgo as a street tree:
First, selecting high-quality seedlings is crucial. The seedlings should have strong, well-developed root systems with white or slightly reddish roots that are closely connected to the xylem. If the roots appear dark, it may indicate poor health and delayed leaf development. For street use, it's best to choose male plants with straight trunks and uniform shapes. The branch base should be around 3 meters from the ground to allow for proper clearance.
Second, planting should take place in early spring before the buds begin to sprout. The soil should be deep, fertile, and rich in organic matter (1% to 3%), with good drainage. At the bottom of the planting hole, add cooked organic fertilizer and mix it with 20 cm of well-rotted soil to avoid burning the roots. If the soil is dry, fill the hole with water and let it dry before planting. Ginkgo is usually planted with a root ball. Avoid planting too deep; the original root line should be level with or just slightly above the ground surface.
Third, watering and fertilization are important during the initial stages. Water the tree every 5 to 7 days after planting. Once the tree is established, it doesn't require frequent watering. A first watering should be done before bud break in spring. In May, if the weather is dry, a second watering can help promote growth. During rainy seasons, adjust watering based on actual conditions. Ginkgo is drought-tolerant, but good drainage is necessary to prevent root rot. In spring and autumn, apply organic fertilizer using a ring or hole method outside the canopy, followed by watering. Ginkgo has a unique ability to survive even when roots are dead—this is called "false living." Some trees may not show leaves for years, but they can still recover. This makes Ginkgo a resilient choice for urban environments.
Fourth, pruning and pest control are relatively minimal. Pruning is only needed before transplanting to remove weak, dead, or crowded branches. Ginkgo grows slowly, so regular trimming is unnecessary. Weeding is important to reduce competition and improve soil aeration, which helps promote root growth. Ginkgo is generally resistant to pests and diseases, but young trees can be vulnerable to sunburn and bacterial infections during hot, dry summers. Using shade nets or applying Bordeaux mixture can help protect them. Crickets are the main pests to watch out for. Overall, Ginkgo is easy to grow and requires minimal maintenance, making it an excellent choice for urban green spaces.
Proper post-transplant care, including maintaining soil porosity and balancing root-to-leaf ratios, plays a critical role in the survival of Ginkgo biloba. With the right care, this ancient tree can thrive for decades, providing beauty and environmental benefits in city landscapes.