POTAGER THIS MORNING (今朝のポタジェ)

In the kitchen garden,
courgette and cucumber grow their large leaves and bear fruits.
Large yellow flowers of courgette are so beautiful.
Dahlia in front of the shed is in bloom.

ポタジェではズッキーニとキュウリが大きな葉を伸ばし、実をつけています.
ズッキーニの大きな黄色の花がきれいです.
シェッドの前ではダリアも咲いています.

My wife found a pair of  Anoplophora malasiaca on a standard rose
and I caught them. 

This is the most dreadful pest of roses as I wrote in a post two years ago.
We always go round the garden to find pests carefully on roses.

家内がゴマダラカミキリのつがいをスタンダードバラで見つけ、捕まえました.

これはバラの最悪の害虫で、2年前の投稿に書いています.
いつもバラの害虫に注意して庭を回ります.

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PRUNING & TRAINING OF BRICK WALL ROSES (レンガ塀のバラの剪定と誘引)

I pruned and trained the climbing roses on the brick wall yesterday.

昨日、レンガ塀のツルバラを剪定誘引しました。

I found a larva of Anoplophora malasiaca ( 'Teppo-Mushi' in Japanese) 

in the branch of Rosa 'Gertrude Jekyll'.  

This pest may let a whole rose plant wither. 

Last May, Rosa 'Crown Princess Margareta' on the brick wall died as a whole.  

Fortunately, it withered only one of four branches this time.  

ゴマダラカミキリの幼虫（テッポウムシ）を

バラ「ガートルード・ジェキル」の枝の中に見つけました. 

この害虫はバラの株全体を枯らすこともあります.

昨年5月にはレンガ塀のバラ「クラウン・プリンセス・マルガリータ」が枯れました.

幸運にも今回は4本の枝のうちの1本だけで済みました. 

The number of branches of Rosa 'Constant Spry' (on the left ) is more than six, 

however, that of Rosa 'Gertrude Jekyll'　(on the right) is only three.  

レンガ塀の左側のバラ「コンスタンス・スプライ」の枝の数は6本以上ありますが、

「ガートルード・ジェキル」の枝数は3本だけです. 

I planted new young plant in the plot 

where Rosa 'Crown Princess Margareta' had grown and died last year.  

去年枯れた「クラウン・プリンセス・マルガリータ」のあった場所に、

新しい苗木を植えつけました. 

I really recognized the awfulness of Anoplophora malasiaca once again.

テッポウムシの恐ろしさを改めて認識しました. 

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THIS WEEKEND (この週末）

This weekend we had no rain.  It was mostly cloudy with some sunshine, and it was very humid.
We were busy at gardening.


（この週末は雨は降らず、曇り空で時々日がさす天気で、蒸し暑い日でした。庭仕事に忙しい週末でした。）


I made an observation platform (a bench and a handrail) at the top of a new garden.

（新しい庭の一番上にベンチと手すりを設置して展望台としました。）

A view from the observation bench today's morning

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Rosa 'Crown Princess Margareta' at the brick wall had been dead last month.  I dug it up and examined its reason.  Eventually I had found a larva of Anoplophora malasiaca ( 'Teppo-Mushi' in Japanese).  That is the most dreadful pest of roses in Japan.


（レンガ塀のバラ「クラウン・プリンセス・マルガリータ」が先月枯れました。昨日これを掘り上げて原因を調べてみたところ、ゴマダラカミキリの幼虫、テッポウムシを見つけました。日本で最悪のバラの害虫です。）

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Our friend in my town had given us herbaceous cuttings of four kinds of hydrangea, and we planted them in small pots today.  The picture below shows flowers and cuttings.


（町内の友人が4種類のアジサイの枝をくれたので、小さなポットに挿し芽をしました。下の写真は花と挿し芽です。）

Hydrangea flowers were arranged with Rosa 'Angela'.  Vivid pink colour of the flowers brightens the atmosphere.

（アジサイとバラのアンジェラをアレンジして、その鮮やかなピンク色が雰囲気をぱっと明るくしてくれます。）

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MARPLE ARRESTED THE CULPRIT (マープル犯人逮捕)

Yesterday morning, my wife Marple found a female adult of rose-borer in our garden.  The culprit perched on a leaf of Rosa 'Iceberg' at the rose arbour.  She caught it alive in a flash.  This is the first time we look at a real one.   A saw-like ovipositor, by which it cuts rose stems, can be seen on the enlarged picture.  Oh, it's awful!


（昨日の午前中、家内のマープルは庭でバラクキバチのメスの成虫を見つけました。この犯人はバラのアーバーの下にあるアイスバーグの羽にとまったので、間髪を入れず生け捕りにしました。本物を見るのは私たちは初めてです。バラの茎を切るノコギリのような産卵管が拡大写真では見えます。本当に恐ろしい！）

Body length; 16mm

A serrate brown ovipositor

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ROSES' ARCHENEMY APPEARED (バラの大敵現る)

Roses' powerful enemy has appeared last week, and its attack is continuing now.

（バラの大敵が先週から出現して、今も攻撃が続いています。）



This is the first sign of being attacked which I found in Rosa 'Mary Rose' last Saturday.  A new shoot suddenly wilts while others are vigorous.

（写真は先週土曜日にバラのメアリーローズにみられた攻撃の最初の症状です。新しい枝が突然しおれますが、ほかの枝は元気です。）

Peeling skin of its stem revealed that the enemy incised the stem in the shape of flying seagull.  The skin looks normal and I didn't know that it is a deed of an insect when I saw it for the first time.  I examined about it and it became clear that the pest is a rose-borer Neosyrista similis.

（枝の皮をはぐとカモメが飛んでいるような形にこの敵が茎を切り裂いているのがわかります。樹皮は普通に見えるため、最初にこの症状を見たときはこれが昆虫の仕業とは知りませんでした。調べてみたらこの被害はバラクキバチの仕業とわかりました。）

Once I saw through a stem using a pocket torch and a magnifying glass, I found something oval just close to the seagull-shaped incision.  Using a sewing needle, I found a very small oval egg.

（以前、懐中電灯の光を通して虫眼鏡で観察してみたら茎がカモメ形に切られた茎の近くに何か卵形のものを見つけました。縫い針を使って、とても小さな卵形の卵を見つけました。）

This is a wilted shoot of Japanese wild rose 'Rosa multiflora' found last Saturday in our garden.  Its leaves is becoming dry, therefore, it seems that several days have passed since the attack of the enemy.  I cut the stem and found a small caterpillar.　

（これは先週土曜日に庭でみつけた野生のバラのノイバラの萎れた枝です。すでに葉が乾燥してきているので、攻撃から数日たっていると思われます。茎を切ってみたら小さな幼虫をみつけました。）

There are many Q and A on internet about rose borers, however, I couldn't find scientific information about it.  But I found the scientific paper written by a Chinese student of Kyushu University.  It was reported in 1936, in Japanese with an English abstract.  The paper includes meticulous observations about rose borers and is very useful for gardeners growing roses.  Photos below are front page and English abstract of the paper.  You can read the full text here.

（インターネット上にはたくさんバラクキバチに関する質問コーナーはありますが、なかなか科学的な情報はみつけられませんでした。しかし、九州大学で学ぶ中国からの留学生が書いた科学論文を見つけました。昭和11年に日本語で書かれていて、英語の要約がついています。論文にはバラクキバチに関する詳細な観察が書かれていてバラを育てるガーデナーには大変役立つと思います。下の写真は論文の表紙と英文要約です。ここで全文を読むことができます。）

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TRAPS FOR SUMMER VEG

Some mini tomatoes and cucumbers are ripening in the kitchen garden, despite the relative lack of sunshine during this summer.

Mini fruit tomato 'Aiko' 

Mini fruit tomato 'Yellow Aiko'

We are using traps for these vegetables instead of insecticides.
The first trap is a sticky trap.  Because yellow color attracts many kinds of insects, the trap is full of insects stuck on it in a few days.

A yellow sticky trap over cucumbers

The second trap is a yellow bucket filled with water and a little of oil and vinegar.  Yellow color and vinegar smell of the bucket attracts insects and they drown in the water with surface oil.  The nursery in our town recommends and sells this yellow bucket.

A yellow bucket trap between tomato and basil

The last one is a measure coping with crows.  A simple inflatable crow is hung, and crows fear it (they think it a dead crow), and keep away from it.  It's workink, I think.  

 An inflatable crow repellent in tomatoes

A PEST OF ROSES

Anoplophora malasiaca is the most dreadful pest of roses in Japan.  Most of gardeners have a experience of its damage to large rose stems.
A larva of it is called 'Teppo-Mushi' in Japan, which means 'rifle worm' in Japanese.  Eggs of Anoplophora malasiaca are laid into stems of various trees including roses.  A larva eats pith of stem and make a tunnel within it, just like the way stem borers do.  It looks like a bullet in a barrel of a rifle.

They come to gardens in June and July to lay eggs.  They usually fly to the top of roses with a height of more than 1.7 meter, and move down to a large part of branch or stem, most often to the point several inches from the ground.

Roses, especially climbing ones, often wither due to this pest.  We had lost a Rosa 'Pierre de Ronsard' several years ago.  Fortunately  Rosa 'Paul's Himalayan Musk' and Rosa 'François Juranville' had withstood attacks to their large branches.

Yesterday my wife found and caught it (below).

Anoplophora malasiac

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Four pictures below are situations of damage and precautionary measures in our garden.

Fine wood particles are attached on the surface of a rose stem.  This is a sign of a larva of Anoplophora malasiac. (Rosa 'Summer Snow, September 2012)

After removing the wood particles, holes of the back side of stems were found using a mirror.  By using a wire, larvae had been squashed.  (Rosa 'François Juranville', July 2012)

In order to prevent the damage, we used a fine net.  (Rosa 'Paul's Himalayan Musk') 

Another method is to coat the surface of large stems with special emulsion of resin.  (Rosa 'Summer Snow', April 2013)

Every two weeks from spring to autumn, we must check the signs of Anoplophora malasiaca about all of the roses in our garden.  (But we often forget it!)