The standard rose (Mary Rose) in the potager garden was planted when the garden was first laid out over ten years ago. Each May, it produced beautiful pink flowers and became something of a symbolic tree for the potager.
Around last year, the tree began to show signs of declining vigour. Sawdust emerged from the rootstock, suggesting longhorn beetle larvae had entered the trunk and were feeding on it.
It did flower again this May, but from around summer, some branches began to die back. By autumn, most of the branches had died.
Consequently, I decided to remove this rose. Digging into the soil revealed a dozen of Japanese beetle larvae, and the rose's roots had been almost entirely consumed by the larvae. These larvae were the culprits.
For now, I've decided to plant some flower seedlings. These are a large Echinacea grown from seed in the side yard garden and a small Rudbeckia seedling I recently purchased. I shall take my time considering whether to plant another standard rose.
ポタジェガーデンのスタンダードのバラ（メアリーローズ）は10年以上前に庭を造った時に植え付けました。そして毎年五月にピンクの美しい花をつけて、ポタジェのシンボルツリーとなるような存在でした。
昨年ごろから少し木の勢いが落ちてきていました。台木から木くずが出てくることもあり、カミキリムシの幼虫が木の幹に入り込んで食害していたようです。
今年も五月には花をつけましたが、夏ごろから一部の枝が枯れたりしてきました。そして秋になってほとんどの枝が枯れてしまいました。
そこでこのバラは抜去することにしました。土を掘っていくと10匹以上のコガネムシの幼虫が見つかり、バラの根はほとんど幼虫に食べられてなくなっていました。犯人はこの幼虫たちでした。
とりあえず花の苗を植えることにしました。横庭に種から大きく育ったエキナセアと、最近買ったルドベキアの小さな苗です。再びスタンダードのバラを植えるかどうかはゆっくり考えようと思います。
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| 2016 |
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| 2020 |
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| 2021 |
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| 2022 |
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| 2024 |
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| 2025 |
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| A standard rose, almost dead ほとんど枯れたスタンダードのバラ |
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| Japanese beetle larvae コガネムシの幼虫 |
Dear Poirot
返信削除It is always such a shame to have to remove a plant, especially a rose. I had to remove a rose which was doing really well, but a bit too well, starting to shade out other plants. It had also sent suckers through the border and I am still fighting with some of these!
Best wishes
Ellie
Dear Ellie
削除Thank you for your comments.
It was such a shame about the rose that had bloomed so beautifully for us every year.