清玄

清玄的基本数据

养护难度

适合中级者

寿命

该品种寿命数据有限

体型

作为盆栽以小至中型流通（该品种成熟树木尺寸数据有限）

浇水

肥料（春季和秋季，适量）

光照和放置位置

光照充足、通风良好的地方。新芽期的红色新叶对干燥和强光敏感，应限制在上午光线程度。梅雨结束至9月上旬需遮荫

浇水

叶片展开后干燥速度快。春季每天2次，夏季2-3次，冬季1-2天1次，向根部浇水。夏季缺水会影响秋叶效果

温度和越冬

抗寒性强（日本红枫适应USDA第5区）。落叶后经过2-3次霜冻后，需保护免受干风和晚霜

培养土和换盆

使用排水良好的培养土，在新芽展开前的3月左右换盆。每2-3年一次，小型盆栽1-2年一次，修整根系以增加细根

肥料

新叶硬化的4月中旬和5月施用有机肥料。对成熟树过量施肥会导致徒长。秋季肥料在9月结束

修剪和造型

3月中旬至4月中旬摘除顶部芽。叶片修剪和疏叶在6月中旬进行，修剪在落叶前后进行（冬季修剪有枝条枯死危险）。金属丝易嵌入，应短期使用

病虫害和注意事项

新芽易发生蚜虫，梅雨后容易出现白粉病。叶片薄容易产生药害，使用药剂时应遵守标签浓度

关于清玄

Seigen is a Japanese maple bonsai cultivar prized as a "spring maple" for its red spring shoots and vivid autumn foliage. Typically grown as a small to medium bonsai, it suits intermediate-level growers.

开始养护清玄前需要了解的7件事

1. 1Managing Light

   Seigen's signature red spring leaves are sensitive to strong light and drying out. While the new leaves are emerging, limit the plant to morning sun, and provide shade from the end of the rainy season through early September to prevent leaf scorch. A spot with good air circulation is also important.

2. 2Watering When Dry

   Bonsai pots hold very little soil, so they dry out quickly, and Seigen is no exception. Water thoroughly once the surface soil feels dry, letting water run from the drainage holes, and pay extra attention during spring shoot growth and before autumn coloring when the tree is more sensitive to dryness.

3. 3Well-Draining Soil

   Seigen develops a fine, fibrous root system typical of Japanese maples, so it does best in bonsai soil that balances drainage with some water retention. A commercial maple or deciduous-tree mix based on akadama is easy to work with and helps prevent root rot from excess moisture.

4. 4Repotting in Dormancy

   As roots fill the pot, growth slows, so Seigen needs repotting every few years like most bonsai. Doing this while the tree is dormant and leafless, trimming back old soil and roots at the same time, keeps stress on the tree to a minimum.

5. 5Two Seasons of Color

   Seigen's appeal comes from its two color changes each year — red shoots in spring and colorful foliage in autumn. Protect new growth from strong wind and frost in spring, and keep watering and light steady as autumn approaches to help the color develop evenly.

6. 6Pruning to Shape

   With its small leaves and fine branching, Seigen responds well to pinching and pruning, which keep the silhouette delicate and bonsai-like. Pinch out the central buds from mid-March to mid-April, and prune around the time the leaves fall. Avoid pruning in winter, as it risks branch dieback.

7. 7Choosing a Healthy Tree

   When selecting a Seigen, look for small, densely growing leaves and a well-balanced branch structure, both signs the tree will be easy to style as bonsai. Because care calls for intermediate-level experience, some background in basic maple bonsai watering and pruning will make growing it easier.

清玄的常见问题

Q.Is Seigen suitable for beginners?

A.Seigen's care level is generally considered intermediate rather than beginner-friendly. Some prior experience with basic maple bonsai watering and pruning makes it easier to manage, so it suits growers who already have some bonsai experience rather than a first tree.

Q.How does Seigen differ from other maple cultivars?

A.Seigen belongs to the "spring maple" group, valued for two distinct color changes each year: red new growth in spring and colorful foliage in autumn. Its small, finely textured leaves also make it easier to train into a refined bonsai silhouette.

Q.How large does Seigen grow?

A.As bonsai, Seigen is most commonly grown and sold in small to medium sizes. Detailed records of the cultivar's mature size outside of bonsai training are limited, so its final size largely depends on pot choice and ongoing pruning.

Q.When does Seigen show its best color?

A.Seigen offers color twice a year — reddish new shoots in spring and autumn foliage later in the year. The exact timing shifts somewhat depending on climate and the tree's growing location.

Q.How long does a Seigen tree live?

A.There isn't much documented information specifically about the lifespan of the Seigen cultivar. As with bonsai in general, consistent care — repotting, pruning, and routine maintenance — supports growing the tree over the long term.

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