| 2026/4/30 |
Hi, I'm Kei Narujima! This is a blog about the flowers, plants, and bugs I find in central Tokyo, along with bits of art and Japanese culture to make you smile or think (or so I hope)! こんにちは。花や虫、そして時々日本の文化などについて書いてます😊。
Linden Arrowwood (Viburnum Dilatatum) ガマズミ(莢蒾)
Japanese Red Maple (Acer Pycnanthum) ハナノキ(花之木)
英語の後に日本語が続きます。
Japanese red maple trees (Acer pycnanthum) are native to Japan. Their Japanese name is "hananoki," translating to "flower tree," which is too general, isn't it? The tree is named as such after its deep red flowers standing out because they're produced before green leaves are in early spring when no other flowers are seen. This makes sense. I first found the flowers because the red color stood out in early March.
| 2024/4/30 |
Daylily with Pointed Petals (Hemerocallis) ヘメロカリス
Daylilies (Hemerocallis) are native to East Asia and can be found across Japan. Daylilies are diverse in terms of color and petal shape. The daylilies in these photos have pointed petals while those in this post have round petals.
| 2026/4/29 |
A Small Pile of Roly Polies ダンゴムシ団子
| 2026/4/29 |
Burning Bush (Euonymus Alatus) ニシキギ(錦木)
The burning bush (Euonymus alatus) is native to China, Korea, and Japan and can be found across Japan. The burning bush autumn leaves are very beautiful but because the bush grows to only 1 to 1.5 meter high, the beauty is often disregarded among maple and other taller trees. But the beauty of the burning bush is not just it. If you are closer to it, you can find small red arils with one to four vivid orange seeds inside.
Flowers of Camphor Tree (Camphora Officinarum) 楠(クスノキ)
Camphor trees (Camphora officinarum) are native to Asia, including Japan, so can be found across Japan. The tree produces tiny cream flowers in May and June.
Banana Shrub (Magnolia Figo) 唐種招霊(カラタネオガタマ)
Banana shrub (Magnolia figo) is native to SouthEast China and came to Japan during the Edo period (1603-1868) and can now be found across the country. The plant produces flowers from May to June in Japan, which smell like bananas, suggested by the name. Banana shrub is a type of Magnolia but doesn't look like so, which is why banana shrub was categorized into the Michelia genus before 2022. I smelled the flowers to see if they really smell like bananas but because of the loss of my sense of smell (?), I smelled nothing.
Wiesener's Magnolia (Magnolia x Wieseneri) ウケザキオオヤマレンゲ(受咲大山蓮華)
英語の後に日本語が続きます。
Wiesener's magnolia (Magnolia x wieseneri) is native to China and a natural cross-breed between Magnolia obovata and Magnolia sieboldii. It produces flowers from April to May, which resemble very much those of Siebold's magnolia but you can tell those in these photos are Wiesener's magnolias because they face upward unlike Siebold's magnolia flowers, which face downward.
| 2026/4/26 |
Annual Blue-Eyed Grass (Sisyrinchium Rosulatum) ニワゼキショウ(庭石菖)
Annual blue-eyed grass is native to North America and came to Japan during the Meiji period (1868 - 1912. They start to open from the morning to noon, so if you are a morning bird, you may miss the tiny but lovely flowers as I did. Annual blue-eyed grass flowers are small, 1 cm in diameter, but their striped receptacle is so beautiful.
| 2026/4/26 |
Corn Speedwell (Veronica Arvensis) タチイヌノフグリ(立犬の殖栗)
Corn speedwell (Veronica arvensis) is a member of the speedwell's family. Its flowers are so tiny, just 3 to 5 mm in diameter (see the last photo to see how tiny they are!), and are open only during the day that you wouldn't notice them unless you crouch to look for something on the ground like me😆!
- Veronica polita (grey field-speedwell) named "inu no fuguri," which translates to "dog's balls," after the resemblance of its fruit shape to dog's balls.
- Veronica persica (Persian speedwell) named "ooinu no fuguri," which translates to "large dog's balls" after its larger flowers than those of grey field-speedwell.
- Veronica arvensis (corn speedwell) named "tachi inu no fuguri," which translates to "standing dog's balls" after its stems standing upright.
Galls on Cherry Leaves😱 サクラの葉の虫こぶ😱
What do you see in these photos? Caterpillars? You're half correct, half incorrect. These are cherry leaves or more specifically galls or abnormal outgrowth of the leaves caused by Tuberocephalus sakurae, i.e., aphids. So, don't even think about looking inside! The galls contain many many aphids😱!! If you want to see monstrous ones, scroll down!
Trident Maple (Acer Buergerianum) トウカエデ(唐楓)
英語の後に日本語が続きます。
These are leaves of a trident maple tree (Acer buergerianum) I found in April. Trident maple is native to South East China and Taiwan, coming to Japan in the early 18th century and can now be found across Japan.
It's not unusual to see red male leaves in autumn but not so in April, you think? But not necessarily. Leaves turning red in spring is known as a way for plants to protect shoots from ultraviolet rays. The leaves are red but look different from autumn red leaves because of the deep green backdrop.
| 2026/4/22 |
| 2026/4/22 |
Briza Maxima (Big Quaking Grass) コバンソウ(小判草)
They're spikelets of big quaking grass (Briza maxima). This is BIG because they're bigger than lesser quaking-grass (Briza minor). When seeing them for the first time, I thought they were some bugs. Its Japanese name is "koban sou," which translates to "old Japanese gold coin plant." Old gold coins in Japan were oval, shaped like these spikelets.
| 2026/4/22 |
White Evening-Primrose (Oenothera Rosea) 白花夕化粧(シロバナユウゲショウ)
Evening primroses (Oenothera rosea) are native to America but can now be found across Japan. It usually produces pink flowers from May to September but some have white ones like those in these pictures. Seeing flowers brings me happiness and seeing white evening primroses especially does so because it's so rare to find them. Finding white ones makes me feel as if I had found four-leaf clovers!
Yellow-Cress (Rorippa) イヌガラシ属(犬芥子)
英語の後に日本語が続きます。
Yellow-cress (Rorippa) is native to Asia and should be found across Japan but not so often in Central Tokyo. The plant grows in wet habitat, producing yellow flowers from April to June in Japan. Its Japanese name is "inu garashi," which translates to "dog mustard greens," because the plant tastes like mustard greens but is of lower quality as food. (To be continued below the 1st photo.)
| 2026/4/28 |
Fuzzy Deutzia (Deutzia Scabra) マルバウツギ(丸葉空木)
The shrub looks like slender deutzia (Deutzia gracilis) (and AI tells so) but I believe this is fuzzy deutzia (Deutzia scabra) because its leaves are round (which is why its Japanese name is "maruba utsugi," translating to "round leafed deutzia") and the flowers are upward facing (while slender deutzia flowers are downward facing). Fuzzy deutzia is native to Japan and can be found across the country. The plant produces white flowers from April to May.
| 2026/4/19 |
Persian Speedwell (Veronica Persica) オオイヌノフグリ(大犬の陰嚢)
- Grey field-speedwell (Veronica polita) => イヌノフグリ or "dog balls"
- Persian speedwell (Veronica persica) => オオイヌノフグリ or "large dog balls"
- Corn speedwell (Veronica arvensis) => タチイヌノフグリ or "standing dog balls"
- Ivy-leaved speedwell (Veronica hederifolia) ==> ツタバイヌノフグリ(フラサバソウ) or "ivy-leaved dog balls"
Red Flowering Dogwood (Cornus Florida) 赤い花水木(ハナミズキ)
Flowering dogwood (Cornus florida) is native to North America but can now be found across Japan, producing red, white, and cream white flowers from April to May. The dogwood was donated by the U.S. to Japan in 1915 in exchange for cherry trees, a gift of friendship from Japan to the U.S.
Hyacinth Orchid (Bletilla Striata) シラン(紫蘭)
Hyacinth orchids or Chinese ground orchids (Bletilla striata) are native to China, Taiwan, and Japan and can be found across Japan. The plant produces beautiful pinkish purple flowers from April to May, which look even more beautiful against the green leaves and/or the blue sky. The plant can also have white flowers, which I've never seen.
Lesser Quaking-Grass (Briza Minor) ヒメコバンソウ(姫小判草)
Lesser quaking-grass (Briza minor) is native to Europe and came to Japan during the Edo period (1603-1868). The plant produces spikelets form April to June, which are very tiny and cute but are so small that you wouldn't normally notice them. According to the internet, the spikelets produce a rattling sound when shaken or when wind passes through them. Next time I find them, I'll shake them, of course, gently.
Spanish Bluebell (Hyacinthoides Hispanica) ツリガネズイセン(釣鐘水仙)
英語の後に日本語が続きます。
| 2026/4/17 |
White Ajuga 白のアジュガ
Ring-Cupped Oak (Quercus Glauca) アラカシ(粗樫)
Ring-cupped oak or Japanese blue oak trees (Quercus glauca) are native to Asia and can be found across Japan. They produce acorns from October to November and the acorns are not only fed on by insects and birds but were eaten by people as a famine food in Japan. Oak trees are usually known for the acorns but ring-cupped oak trees produce beautiful cylindrical flowers and red shoots, which look like the heads of Pteranodon to me (scroll down), from April to May.
| 2026/4/15 |
Ginkgo (Ginkgo Biloba) イチョウ(銀杏)
Satsuki Azalea (Rhododendron Indicum) サツキ
英語の後に日本語が続きます。
| 2026/4/15 |
Japanese Snowball Bush (Viburnum Plicatum Var. Plicatum F. Plicatum) オオデマリ(大手毬)
The Japanese snowball bush (Viburnum plicatum var. plicatum f. plicatum) is native to, and can be found across, Japan. The bush generally produces flowers from April to June, which are green and like broccoli when in bud and then turn snow white when open.
Chinese Fringe Flower (Loropetalum Chinense) トキワマンサク(常盤万作)
英語の後に日本語が続きます。
Japanese Wisteria (Wisteria Floribunda) 藤(フジ)
Chinese Fringe Flower (Loropetalum Chinense Var. Rubrum) ベニバナトキワマンサク(紅花常盤万作)
| 2026/3/28 |
Reeve's Spiraea (Spiraea Cantoniensis) コデマリ(小手毬)
英語の後に日本語が続きます。
Reeve's spiraea (Spiraea cantoniensis) is native to China but can now be found across Japan. The plant produces pompom-like clusters of snow-white flowers from April to May in Japan, which is why its Japanese name is "kodemari," translating to "small temari ball." Despite its innocent appearance, Reeve's spiraea is hardy or too hardy and invasive. Many websites in Japan advise against planting Reeve's spiraea in the garden.
Highbush Blueberry (Vaccinium Corymbosum) ノーザンハイブッシュブルーベリー
英語の後に日本語が続きます。
Highbush blueberry (Vaccinium corymbosum) is native to North America, producing flowers from April to May and berries from June to July in Japan. The blueberry was introduced to Japan in 1951 but it took 20 years for farmers to become able to commercially grow the plant due to lack of skills to grow it and the completely different weather from its place of origin. It's hotter and more humid in Japan. But now, highbush blueberries are grown in several places and the Nagano and Gunma prefectures are the main producers of the berry.
| 2026/4/7 |
List of Cherry Blossoms 桜いろいろ
英語の後に日本語が続きます。
White Enkianthus (Enkianthus Perulatus) ドウダンツツジ(満天星躑躅)
White enkianthus (Enkianthus perulatus) is native to Japan and can be found across the country. The plant produces tiny white flowers from April to May but not just that. White enkianthus produces two other beautiful things.
White Skullcaps (Scutellaria Indica Var. Parvifolia F. Alba.) シロバナコバナタツナミ(白花小葉の立浪草)
Skullcaps usually produce purple flowers but they also have white ones (Scutellaria indica var. parvifolia f. alba). Their profile (i.e., appearance from the side) brings me happiness while reminding someone on the internet of "The Great Wave off Kanagawa" by the Japanese ukiyo-e artist Hokusai (1760–1849), which I agree with.
| 2026/4/16 |
White Common Vetch (Vicia Angustifolia Var. Segetalis F. Albiflora) 白花矢筈豌豆(シロバナヤハズエンドウ)
Common vetch (Vicia sativa) is native to the Orient and the Mediterranean regions but now can be found across Japan. The vetch usually produces pink purple flowers from March to June in Japan but I've finally found white ones! If you're interested in the vetch's Japanese names, read this post.
Sato Cherry Blossoms サトザクラ(里桜)
Did you know that although there are many varieties of Sato cherry trees (the Cerasus Sato-zakura group), they are all bred from the Oshima cherry? They are late bloomers, meaning you can still enjoy cherry blossoms even after the main Somei Yoshino season wraps up. If you love sakura, check out my other post, 'List of Cherry Blossoms'!
Three-Cornered Leek (Allium Triquetrum) ミツカドネギ(三角葱)
Three-cornered leeks (Allium triquetrum) are native to the Mediterranean region but can now be found across Japan. It produces flowers with a beautiful contrast between the white petals and the green stripes against the thin green leaves from March to May. Their appearance is angelic but the smell is not as you can guess from their not only English name but also Japanese name mitsukado negi, which translates to "triangular leeks," after their triangular flower stems. Three-cornered leeks are invasive. The solution proposed on many websites in Japan is to EAT, EAT, and EAT.
| 2026/4/7 |
Yellow Cherry Blossoms (Ukon Cherry) 黄色の桜「ウコン(鬱金)」
Ukon cherry blossoms are popular for their unique yellow color. Before they fall, their centers turn red, creating a beautiful contrast of yellow, green, and red. These gorgeous, double-flowered blossoms have a vibrant presence. The name Ukon (meaning turmeric) comes from its resemblance to the color of fabric dyed with the spice. Both Ukon and Gioiko chloroplasts contain carotenoids (yellow pigment) and chlorophyll (green pigment); however, Ukon has less chlorophyll, resulting in greenish-yellow flowers, while Gioiko contains more, producing yellowish-green blossoms.
European Ajuga (Ajuga Reptans) セイヨウキランソウ(西洋金瘡小草)
Ajuga is native to Europe and western and central Asia but can now be found across Japan. You would see mainly two types of Ajuga in Japan, Ajuga reptans or bugleweed, which is native to Europe and grows taller, and Ajuga decumbens, which is native to Japan and low growing. Ajuga are so hardy that you can find both in many places even on sidewalks in Central Tokyo. Although their height differs, the flowers resemble each other very much.
Japanese Ajuga (Ajuga Decumbens) 金瘡小草(キランソウ)
Ajuga is native to Europe and western and central Asia but can now be found across Japan. You would see mainly two types of Ajuga in Japan, Ajuga reptans or bugleweed, which is native to Europe and grows taller, and Ajuga decumbens, which is native to Japan and low growing. Ajuga are so hardy that you can find both in many places even on sidewalks in Central Tokyo. Although their height differs, the flowers resemble each other very much.
Japanese Camellia 'Beauty Blush' ツバキ 'Beauty Blush'
英語の後に日本語が続きます。
These photos show Japanese camellia 'Beauty Blush.' The blooms were so small (and many were still buds) that I didn't realize they were camellias when I photographed them. Luckily, a couple of bees arrived to collect pollen. The pollen load on one of the bees (1st photo) was so huge that I worried it might fall off, but that was a groundless worry. It hopped from flower to flower gathering pollen and then flew away.
| 2026/4/5 |
Somei Yoshino Cherry Blossoms (Prunus x Yedoensis) 染井吉野(ソメイヨシノ)
Their beauty reminds me of The Makioka Sisters by Junichiro Tanizaki, which ends with cherry blossom viewing in Kyoto. The novel has no plot, yet is intriguingly beautiful—based on the real life of Tanizaki's wife's sisters—with a writing style whose long sentences may not be very popular today. Its original title, Sasameyuki, translates to 'light snow,' a metaphor for the declining Makioka family, which reflects the ephemeral beauty of cherry blossoms. The novel was translated into English by Edward G. Seidensticker. It's pretty long, but worthwhile reading if you're interested in Japanese culture.
Chinese Quince (Pseudocydonia Sinensis) カリン(花梨)
英語の後に日本語が続きます。
The Chinese quince (Pseudocydonia sinensis) is native to China but now can be found across Japan. The plant is known for the fruits but enjoyable throughout the year. Its pink flowers are pretty, jam made from the fruits is yummy, and the autumn leaves are so colorfully beautiful.
Japanese Star Anise (Illicium Anisatum) シキミ(樒)
英語の後に日本語が続きます。
Japanese star anise (Illicium anisatum) is native to Japan and can be found across the country. The plant produces pretty cream white flowers from March to May and fruits from September to October but it's toxic in its entirety and the toxicity of the fruits and seeds is quite high, resulting in death when eaten. The thing is the fruits resemble those of Chinese star anise (Illicium verum) very much, which are used in cooking, so the mistaking of Japanese star anise for Chinese ones could lead to fatal accidents. The tree grows in my neighborhood without any protection, so I did research, wondering if the tree might be Chinese star anise but it's not. Chinese star anise flowers are red. For their toxic nature, Japanese star anise fruits are designated as a deleterious substance under Poisonous Deleterious Substances Control Act in Japan but the growing the plant is not prohibited.
| 2026/3/31 |
Sacred Bamboo (Nandina Domestica) ナンテン(南天)
英語の後に日本語が続きます。 The sacred bamboo (Nandina domestica) is native to China, was brought to Japan for ornamental and medical purposes before the...
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英語の後に日本語が続きます。 Some years ago, my company decided to transfer certain staff to another group company. I was one of them, but I didn't th...
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英語の後に日本語が続きます。 I read A Pale View of Hills by Kazuo Ishiguro about ten years ago. The book was my second Ishiguro novel after Never Let Me ...