Sweet Viburnum (Viburnum Odoratissimum) サンゴジュ（珊瑚樹）

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Sweet viburnum (Viburnum odoratissimum) is native to Asia and can be found across Japan. The tree produces clusters of white flowers from June to July and red berries from July to October in Japan and because of the color of the berries, the tree's Japanese name is "sango ju," which translates into "coral tree." The berries are beautiful but toxic. 

2026/8/16

Chinese Cucumber (Trichosanthes Kirilowii) キカラスウリ（黄烏瓜）

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Chinese cucumbers (Trichosanthes kirilowii) are native to China and Japan. They're dioecious, producing white "hairy" flowers from June to September and fruits from August to October. The fruits are green at first and then turn yellow. They're edible but not tasty. Someone says on the internet that he would never eat it unless famine comes😆. It's not so difficult to find Chinese cucumber flowers in Tokyo but not so when it comes to the fruits. It seems Chinese cucumbers are removed when the flower season is over.     

When you see the flowers, you would likely see pumpkin beetles (Aulacophora nigripennis), too. Pumpkin beetles are harmful but their tininess, agility and color contrast between orange and black never fails to bring me a smile.  

2022/6/28

2024/6/12

Giant Crinum Lily (Crinum Asiaticum) ハマユウ（浜木綿）

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Giant crinum lilies (Crinum asiaticum) are native to tropical and eastern Asia and can be found in mainly the southern half of Japan, producing white flowers in summer. As you can see from the flower shape, the lilies are in the Amaryllidaceae family, the same as red spider lilies and so are toxic in their entirety. The thin orangish things on the flower are stamens.

Giant crinum lilies have been loved by Japanese people for so long that the Man'yōshū, i.e., the oldest extant collection of Japanese waka (poetry in Classical Japanese) compiled during the Nara period (710 to 794), includes a waka about the lilies. More than ten municipalities in Japan have designated the lilies as their flower. 

2024/9/3

Hamilton's Spindletree (Euonymus Hamiltonianus) マユミ（檀）

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Some plants bring you happiness through the year and Hamilton's spindletree (Euonymus hamiltonianus) is one of them. The plant is native to East Asia and can be found across Japan. It produces tiny cream flowers from May to June and fruits in autumn. The fruits are four-lobed and green at the beginning, then turn pale pink, and crack to show seeds with red arils in autumn.

A good thing about photographing plants is to make people more talkative. When I was photographing the fruits in September, two women approached me asking what they were. I said they were the fruits of Hamilton's spindletree but the women insisted they couldn't be fruits but buds to flower soon. It was fun talking with strangers about little things.

2026/4/24

2025/5/9

Apple Mint (Mentha Suaveolens) アップルミント

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A weevil was resting on, and a bee was gathering pollen from, flowers of apple mints in my neighborhood. They're growing on the sidewalk. I have no idea about how they got there. 

2026/6/13

2026/6/13

Lithocarpus Edulis (Japanese Stone Oak) 馬刀葉椎（マテバシイ）

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The Japanese stone oak (Lithocarpus edulis) is native to Japan and can be found across the country. The nuts are edible, tasting like chestnuts when baked (according to a website).  

In Japan, the nuts of Fagaceae trees, one of which is the Japanese stone oak, are collectively called "donguri" and there's a famous song for children about an acorn falling into a pond "Donguri korokoro (i.e., Rolling acorn)."    

The tree's Japanese name is "mateba shii," which translates into "a tree becoming a chinquapin tree soon," because people prefer(ed) chinquapin nuts to the Japanese stone oak nuts.

2026/7/26

Balloon Vine (Cardiospermum Halicacabum) 風船蔓（フウセンカズラ）

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The balloon vine (Cardiospermum halicacabum) is native to tropical and subtropical regions, came to Japan during the Meiji era (1868-1912), and is now grown for ornamental purposes across the country. As its name suggests, the balloon vine is known for its balloon shaped fruits but you shouldn't miss its tiny white flowers or dark brown seeds with heart-shaped white spots on them, which are so sweet (scroll down)!

When I was photographing the flowers, the owner came out to give me the seeds. I put them in a pot at home, hoping they come up. 

2026/7/14

Panicled Hydrangea (Hydrangea Paniculata) ノリウツギ（糊空木）

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The panicled hydrangea (Hydrangea paniculata) is native to east Asia and can be found across Japan. The hydrangea look to me resembling oakleaf hydrangea (Hydrangea quercifolia), so I often mistook the latter for panicled hydrangeas and this is my first time seeing the panicled one still in bloom. 

The panicled hydrangea's Japanese name is "nori utsugi," which translates into "glue Deutzia," after their inner bark being used before to make a natural adhesive for washi, i.e., Japanese paper, and their stems resembling those of Deutzia. 

2026/7/15

Potato Vine (Solanum Laxum) ツルハナナス（蔓花茄子）

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The potato vine (Solanum laxum) is native to South America, came to Japan during the Taisho era (1912-1926) for ornamental purposes, and can now be found across Japan. Its Japanese name is "tsuru hana nasu," which translates into "vine flower eggplant," after the resemblance of its flowers to those of eggplants. Eggplant or potato? It's so confusing. 

2026/7/14

Water Celery (Oenanthe Javanica) セリ

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The water celery (Oenanthe javanica) is native to east Asia and can be found across Japan, producing small white flowers in August. The plant is aromatic and edible in its entirety including the roots. One of my favorite recipes is ohitashi, i.e., boiling and seasoning them with bonito dashi stock and soy sauce.

2026/7/9

2026/7/9

Lysimachia Clethroides (Gooseneck Loosestrife) 丘虎の尾（オカトラノオ）

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The gooseneck loosestrife (Lysimachia clethroides) is native to east Asia and can be found across Japan, producing white flowers from June to August. It's edible and used to be eaten in Japan as a famine plant (although it tastes bitter and astringent). The plant's Japanese name is "Okatora no o," which translates into "tiger tail growing on hills," after its flower spikes looking like tiger tails.  

2026/7/5 With a marmalade hoverfly

Blueberry ブルーベリー

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The blueberry is native to North America but can now be found across Japan, producing flowers from April to May and fruits from early June to early September in Japan. Surprisingly, Tokyo is the largest producer of blueberries in Japan. 

2026/7/9

Five-Seeded Plume-Poppy (Macleaya Cordata) タケニグサ（竹似草）

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The five-seeded plume-poppy (Macleaya cordata) is native to China, Taiwan, and Japan and can be found across Japan. Its Japanese name is "takeni gusa," which translates into "plant similar to bamboo," after it having hollow stems like bamboos. 

The plant shows its beauty in various ways. Spindle shaped white things (scroll down) are buds. Things that look like sparklers are flowers, which contain beautiful thread shaped white stamens and orange pistils (scroll down). Its brown capsules are also beautiful. 

2026/7/1

Buckwheat (Fagopyrum Esculentum) ソバ（蕎麦）

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The buckwheat (Fagopyrum esculentum) is native to southwestern China and grown in Hokkaido and other prefectures in Japan but it's unusual for it to grow on the sidewalk like this. The plant produces white and pink flowers twice a year in Japan, i.e., summer buckwheat, which flower from late June to early July, and autumn buckwheat, which flower from early September to mid-October. Those in these photos should be summer buckwheat.

Many tourists come to Japan to eat tempura, sushi, ramen, wagyu, etc., but when you want to give your stomach a break, I would recommend a soba noodle. When your stomach doesn't need a break, you can of course enjoy having a soba noodle with tempura on it (i.e., tempura soba) or a soba noodle together with oyako don (chicken and egg rice bowl) or katsu don (Japanese pork cutlet and egg rice bowl), both of which you should generally be able to have at most soba noodle restaurants. 

2026/6/28

Pokeweed (Phytolacca Americana) 洋種山牛蒡（ヨウシュヤマゴボウ）

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The pokeweed (Phytolacca americana) is native to North America, came to Japan at the beginning of the Meiji period (1868-1912), and can now be found across the country. It produces tiny flowers with white petals and green ovaries from June to September, followed by fruits which are green at first but turn dark purple beautifully when ripe. (Scroll down!) The plant is toxic in its entirety despite its beautiful appearance. 

2026/6/24

Annabelle Hydrangea (Hydrangea Arborescens 'Annabelle') アナベル

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The Annabelle hydrangea (Hydrangea arborescens 'Annabelle') is a cultivar of Hydrangea arborescens. The hydrangea is a late bloomer, producing flowers from May to July, which are lime green at first, turning white and then green again. Below are the shots of various hydrangeas. Hope you enjoy them!

Hydrangea macrophylla 'Ayesha' (Popcorn hydrangea)

Hydrangea changing from pale green to white then to pale blue
Hydrangea blooming all year round (Hydrangea serrata var. yesoensis f. cuspidata cv.)

Purple and pink lacecap hydrangeas

Various lacecap hydrangeas

Pink mophead hydrangea

Kurenai lacecap hydrangea (Hydrangea serrata var. 'Kurenai')

Oakleaf hydrangea (Hydrangea quercifolia)

Tea of heaven 'Mikata-yae' (blue Hydrangea serrata)

Nettle-leaved hydrangea (Hydrangea hirta)

White and whitish hydrangea

2026/6/2

Lily of the Nile (Agapanthus) アガパンサス（紫君子蘭）

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The Lily of the Nile or the African lily is native to Southern Africa, was introduced to Japan during the Meiji era (1868-1912) and can now be found across the country, producing pale purple and white (sometimes pink, which I've never seen) flowers from May to August in Tokyo. The lily is popular for its flowers blooming during the muggy rainy season in Japan (usually from June to mid-July).   

2025/6/20

Angel's Trumpet (Brugmansia) キダチチョウセンアサガオ（木立朝鮮朝顔）属

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Brugmansia is native to tropical regions of South America, was introduced to Japan during the Meiji period (1868-1912) for ornamental purposes, and can now be found across Japan. Its flowers resemble Datura metel very much but it's quite easy to tell. Brugmansia flowers face downward while Datura metel upward. They're related and both toxic.

2026/6/21

Woodland Elaeocarpus (Elaeocarpus Sylvestris) 胆八樹（ホルトノキ）

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The woodland elaeocarpus (Elaeocarpus sylvestris) is native to eastern Asia and can be found across Japan. What I like best about the tree is its spin mop-like flowers, which bloom from June to August in Japan. (Scroll down!)

The tree is named "horuto no ki" in Japanese, which translates into "Portugal tree," after an innocent mistake made by Gennai Hiraga (1728 - 1780), a famous Japanese pharmacologist, student of Rangaku (i.e., western learning), physician, author, painter, and inventor (in short, a genius!) in the Edo period (1603-1858). He mistook this tree for an olive tree, which was then called "Portugal tree." Even Homer sometimes nods. Gennai isn't an exception😉!

2026/6/22

Chinese Privet (Ligustrum Lucidum) トウネズミモチ（唐鼠黐）

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The Chinese privet (Ligustrum lucidum) is native to China, came to Japan during the Meiji period (1868-1912), and can now be found across the country. It produces flowers from June to July in Japan and fruits (scroll down) in October, which are green at first and turn purplish black toward winter. The tree's Japanese name is "tou nezumi mochi," which translates into "Chinese mouse mochi," after the fruits looking like mouse droppings and the leaves resembling those of the mochi tree or the elegance female holly (Ilex integra). The fruits of Chinese privet are used in herbal medicine despite their mouse dropping like appearances. 

The Chinese privet is widely planted in urban areas (e.g., Tokyo) because it's highly tolerant against air pollution, heavy urban smog, and poor soil conditions. 

2026/6/22