Pink and White Marbled Sasanqua Camellia 源平咲きの山茶花

英語の後に日本語が続きます。

Sasanqua camellias (Camellia sasanqua) are native to Japan and can be found across Japan. The plant produces white, pink, and red flowers from October to December, earlier than Japanese camellia (Camellia japonica), which is one of the differences between the two camellias.  

These two camellias resemble each other and experts provide several ways to distinguish them. One is the size of trees and another the timing of flowering, but the most interesting difference is how they fall or die. Sasanqua flowers die with petals falling off one by one while when Japanese camellia flowers die, the flower heads fall off in their entirety and this way of dying was associated with beheaded human heads in the Edo (samurai) period. Naturally, despite its beauty, the Japanese camellia was unpopular among samurai. If you're interested in such "beheaded" camellias, read this post!

If you're interested in other marble colored flowers, read the following posts!
2025/11/1

2023/12/25

Ginkgo (Ginkgo Biloba) イチョウ(銀杏)

英語の後に日本語が続きます。

The ginkgo (Ginkgo biloba), a gymnosperm plant, has male and female trees. The male does not produce flowers but pollen while the female produces fruits from September to November. In Central Tokyo, you can see many ginkgo trees but most of them in the office district are male to prevent people from stepping on the fruits. Ginkgo fruits are so stinky, smelling like something rotten, when raw that nobody wouldn't want to step on them but they're considered one of the autumn delicacies in Japan. 

Its leaves turn bright yellow (or golden!) beautifully. According to "The Process of Leaf Color Change," in autumn triggered by shorter days and lower temperatures the leaves stop their food making process. The chlorophyll breaks down, the green colour disappears and the yellow and orange colours become visible. At the same time other chemical changes may occur which form additional colours through the development of red pigments. Some mixtures give rise to reddish and purplish autumn colours such as dogwoods and sumachs, while others give maple its brilliant orange. The autumn foliage of some trees show only yellow colours, whilst others like oaks show only brown. All these colours are the varying amounts of the chlorophyll residue and other pigments in the leaf. 

The next question is how? Does the color change happen in all parts of the leaves at the same time or from one part to another? You can see the answer in the last two photos of ginkgo leaves changing yellow from the edge to the middle😊! 

2024/11/30

2024/11/30

2025/11/1

2025/11/1