1 Species
For optimal growth and development, fertilize your Ginkgo bonsai regularly during the growing season with high-nitrogen fertilizer when buds begin opening in spring. You can apply liquid fertilizer weekly until the leaves turn yellow in autumn, or use a balanced organic fertilizer for slower nutrient release. A dual approach combining both liquid and solid organic fertilizers can provide comprehensive nutrition, but avoid over-fertilizing as this can damage the roots. For increased vigor, fertilize every two weeks from spring through mid-summer, then again in September and October.
Ginkgo bonsai trees thrive in full sun but require careful positioning based on their stage of growth. Young trees should start in semi-shade to prevent leaf burn before gradually transitioning to full sun, which produces the most vibrant autumn colors. During winter, protect the tree from freezing temperatures by moving it indoors, as extreme cold can damage both foliage and roots. While Ginkgo bonsai are generally hardy, they need winter protection when temperatures drop significantly to prevent root damage.
Pruning Ginkgo bonsai requires a delicate touch since pruning scars do not heal over time. Focus on maintaining the tree's natural form and keep pruning to an absolute minimum. When necessary, prune only in spring or fall, reducing leaf clusters to 2-3 leaves while keeping the outermost leaf. For shaping, clip new shoots back to 2-3 buds and avoid cutting large branches as these scars will remain visible permanently. While the tree can be shaped into a broom-style form, its natural shape often produces the most elegant results.
Young Ginkgo bonsai trees (under 10 years) should be repotted annually in early spring, just before new leaves appear. More mature specimens can go 2-5 years between repottings. Use a well-draining standard soil mix with about 10% coarse sand and grit to match their natural growing conditions. When repotting, be extremely careful with root pruning as Ginkgos don't tolerate aggressive root work. Choose a pot that ensures proper drainage and provides adequate space for root development.
Maintain consistent moisture for your Ginkgo bonsai with regular watering during the growing season. Check soil moisture daily by inserting your finger about an inch deep - water thoroughly when the surface feels dry. While the soil should be kept moist during active growth periods, allow slight drying between waterings as these trees prefer slightly drier conditions. Adjust watering frequency seasonally, increasing during warm months and reducing significantly in winter when the tree is dormant. Misting the foliage can help maintain necessary humidity levels, particularly after repotting.