八重寒红

八重寒红的基本数据

养护难度

适合中级者

寿命

梅是长寿树种，有树龄据称达400年的盆梅。

体型

梅是高3～10米的落叶小乔木。作为盆栽时，根据盆的大小进行仕立。

浇水

肥料（花后的3～6月和9～11月施肥。夏季停止）

光照和位置

要形成花芽需要从春季开始充足的光照。放置在光照良好、通风良好的地方，夏季因强烈光照容易灼伤叶片，因此需要遮光。

浇水

本性好水，有叶片时易干燥。春秋季每天1～2次，夏季2～3次，冬季每2～3天1次为指导标准，表面土壤干燥时充分浇灌。

温度和越冬

冬季休眠。为防止鉢土冻结或晚霜伤害根部，需在架下或冷室等地保护。

土壤和换盆

以赤玉土为主体，混入约2成排水良好的沙。换盆于芽萌前2月左右进行，与花后修剪一起进行。1～2年进行1次，老木2～3年进行1次。

肥料

喜肥树种。花后3～6月持续少量施肥，花芽形成的夏季停止，9～11月秋肥应充足。选用磷酸含量多的结实花卉专用肥料较好。

修剪和整形

在5～7分花时摘去残花，花后立即修剪。由于容易长出长枝，5月左右摘除新梢以形成开花的短枝（花芽在7～8月形成）。

病害虫和注意事项

注意蚜虫、螨虫、介壳虫、钻入树干的透翅蛾（有树脂流出）、白粉病和黑星病。花梅对溃疡病敏感，应避免强风。

关于八重寒红

Yae-kanko is an extremely early-blooming Japanese apricot with deep red double flowers, opening in the coldest weeks of winter. It flowered earliest in a Fukui Prefecture cultivar trial and suits intermediate bonsai growers.

开始养护八重寒红前需要了解的7件事

1. 1Keep It Outdoors in Full Sun

   Yae-kanko is a sun-loving ume, so it should be kept outdoors year-round in a spot with plenty of light and good air circulation. Even during its winter bloom, it does best outside, since exposure to cold helps its flower buds develop properly. Extended time indoors can weaken the tree, so limit indoor display to short viewing periods.

2. 2Water Thoroughly When Dry

   Because bonsai pots hold little soil, they dry out quickly, so the basic rule is to water thoroughly once the surface of the soil feels dry. Pay extra attention during the bloom period and the early spring growth spurt, when the tree can dry out fast. At the same time, avoid letting water sit in the saucer, since constantly soggy soil can lead to root rot.

3. 3Use Free-Draining Soil

   Ume dislike staying wet, so use a well-draining, well-aerated mix built around akadama soil. A bonsai blend or a potting mix formulated for ume and flowering trees makes upkeep easier. Soil breaks down and drains less well over time, which is another reason regular repotting matters.

4. 4Repot Regularly

   Repot around February, before the buds break, together with the post-bloom pruning, roughly once every one to two years (every two to three years for old trees). Use an akadama-based mix with about 20 percent free-draining sand; repotting is also a good chance to prune roots and refine the shape. Afterward, watch for drying out and keep the tree out of harsh direct sun while it recovers.

5. 5Prune and Feed After Bloom

   Once flowering finishes, prune back overly long shoots promptly and leave the short spurs where next year's flower buds will form. Apply a slow-release fertilizer regularly during the growing season, cutting back in summer so the tree isn't overtaxed. Exposure to cold during winter dormancy also helps the flower buds mature fully.

6. 6Keep Airflow Good to Deter Pests

   Ume can attract aphids and scale insects, so thinning out crowded branches to keep air moving is a useful preventive step. If you spot a problem, deal with it promptly before it spreads.

7. 7Check Branch Shape and Buds When Choosing

   When selecting a tree, look for one with vigorous overall growth and no severe damage or dieback on the trunk or branches. If flowering is your main interest, check that the short spurs are carrying well-formed flower buds, which gives a good sense of how it will look in bloom. For bonsai styling, it also helps to pick a tree whose branch arrangement is already close to the shape you want.

八重寒红的常见问题

Q.When does Yae-kanko bloom?

A.It's an extremely early-flowering cultivar that blooms in the depths of winter, from the start of the cold season through early February. It flowers noticeably earlier than most other ume varieties.

Q.Is Yae-kanko suitable for beginners?

A.Yae-kanko is generally considered a variety for intermediate growers, since it helps to already know the basics of ume bonsai care such as watering, pruning, and repotting. It suits people with some prior experience growing ume.

Q.How large does it get as a bonsai?

A.As a bonsai it is trained to match the size of its pot, so it can be kept compact in a container. Its shoots tend to grow long, so pinch them back to create the short branches that carry flower buds.

Q.How long can this tree live?

A.With ongoing care such as repotting and pruning, Yae-kanko can be enjoyed for many years.

Q.What do the flowers look like?

A.It produces deep red, double flowers with many overlapping petals for a showy bloom. Among kanbai (cold-season ume), it stands out for both its rich color and its very early flowering.

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