The season for cicadas to shed their outer shells has started! The season usually lasts from early July to late September in Japan and surprisingly, the shells are used as an ingredient to make a Chinese herbal medicine (a cicada shell is not a herb though)! The medicine is pretty popular and effective to treat skin rash.
Plants and Flowers in Central Tokyo & Japanese Culture by Kei Narujima 東京の草花&つぶやき - なるじまけい
Hi! I'm Kei Narujima. This is a blog about flowers, plants, and bugs I saw in CENTRAL Tokyo, and sometimes art and Japanese culture that bring you a smile or make you 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😊。
Cicada セミ
The season for cicadas to shed their outer shells has started! The season usually lasts from early July to late September in Japan and surprisingly, the shells are used as an ingredient to make a Chinese herbal medicine (a cicada shell is not a herb though)! The medicine is pretty popular and effective to treat skin rash.
Yellow Spotted Stink Bug キマダラカメムシ(黄斑亀虫)
英語の後に日本語が続きます。
Eggs of yellow spotted stink bugs (Erthesina fullo) hatch into nymphs as below.
Below is a record of 2025/6/12 I found their eggs for the first time.
On 12 June 2025 (scroll down), I found a circle the size of a quarter dollar coin on a leaf of Chinese tallow (3rd photo). Then, five days later (i.e., on 17 June), they'd become like in the 2nd photo and for the last day since then, they have changed like in the 1st photo! Every bug is small but you can clearly see each is a yellow spotted stink bug. They've changed not only their appearance but also have started to move. The one in the upper right of the 1st photo was running toward the backside of the leaf. They may not be there tomorrow, which makes me feel a bit sad and relieved a lot.
P.S.On 19 June 2025, I went there again to check up on them, finding them like in the 1st photo. All larvae are all gone but two on the eggs in the 1st photo and one each in the 2nd and 3rd photos.
| 2026/7/28 After hatching |
Crepe Myrtle (Lagerstroemia Indica) サルスベリ(百日紅)
Crepe myrtle (Lagerstroemia indica) is native to China, coming to Japan before the Edo period (1603 - 1867) and can now be found across Japan. The tree produces flowers in various colors, white, pink, and red. Its leaves turn orange and red beautifully in autumn and the dark brown fruits are also beautiful.
- Prosperity;
- Good luck;
- Chastity;
- Good luck in love and marriage; and
- Marital fidelity.
But here in Japan, it means:
- Charm and;
- Carelessness.
| 2026/7/28 |
Harlequin Glorybower (Clerodendrum Trichotomum) 臭木(クサギ)
Harlequin glorybower (Clerodendrum trichotomum) is native to east Asia and can be found across Japan, producing flowers from July to September and fruits from October to November. Its Japanese name is "kusagi," which translates into "smelly tree," after its stems and leaves are smelly. Its fruits are blue, surrounded by red calyxes in autumn, which forms a beautiful stark color contrast.
| 2026/7/26 |
| 2021/9/6 |
White-Tailed Skimmer (Orthetrum Albistylum) シオカラトンボ(塩辛蜻蛉)
White-tailed skimmers (Orthetrum albistylum) are found across Asia and Russia. Males and females can be distinguished by color. Males are bluish while females are yellowish. The thing is young males are also yellowish, which makes it difficult to distinguish young males from females.
| 2026/7/26 Female |
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| 2022/8/13 Male |
Lithocarpus Edulis (Japanese Stone Oak) 馬刀葉椎(マテバシイ)
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)."
| 2026/7/26 |
Balloon Vine (Cardiospermum Halicacabum) 風船蔓(フウセンカズラ)
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)!
Panicled Hydrangea (Hydrangea Paniculata) ノリウツギ(糊空木)
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 |
Fig (Ficus Carica) イチジク(無花果)
Plumbago Auriculata (Blue Plumbago) 瑠璃茉莉(ルリマツリ)
Blue plumbago (Plumbago auriculata) is native to South Africa, was introduced to Japan during the Meiji era (1868-1912) for ornamental purposes, and can now be found across the country, producing blue and white flowers from May to November.
| 2026/7/14 |
Cicada セミ
英語の後に日本語が続きます。 The season for cicadas to shed their outer shells has started! The season usually lasts from early July to late September in ...
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英語の後に日本語が続きます。 This is the best shot I could get. It's a female Joro spider, I think. I noticed her spider web first several months ago ...
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英語の後に日本語が続きます。 I often mistake horseflies for bees, but I believe this is a bee, maybe a bumblebee!!?? If so, it's my first time to see ...

