清玄

清玄的基本資料

栽培難度

適合中級者

壽命

此品種壽命相關資料較少

體型

盆景中作為小型至中型流通（此品種成樹尺寸的資料較少）

澆水

肥料（春季和秋季，適量）

光照與擺放位置

陽光充足、通風良好的場所。新芽期的紅嫩葉怕乾燥和強光，宜保持在上午日光程度。梅雨後～9月上旬遮光

澆水

葉展開後易乾。春季每日2次、夏季2～3次、冬季1～2日1次為目安，澆於株基部。夏季缺水會損害紅葉

溫度與越冬

耐寒（伊羅波槭為USDA第5區）。落葉後經歷2～3次霜凍後，避免乾風和晚霜，妥善保護

土壤與換盆

選用排水良好的土壤，換盆在新芽前的3月前後。2～3年一次、迷你型1～2年一次，梳理根部以增加細根

肥料

新葉定形的4月中旬和5月施有機肥。完成木過肥易徒長。秋肥於9月結束

修剪與整形

3月中旬～4月中旬摘除中心芽。葉刈與疏葉於6月中旬，修剪於落葉前後（冬季修剪有枝枯風險）。鐵絲易陷入，應短期使用

病蟲害與注意事項

新芽易發蚜蟲，梅雨後易發白粉病。葉薄易藥害，施藥應遵循標籤濃度

關於清玄

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.

開始照料清玄前需要了解的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.

清玄的常見問題

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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