Why do cypress trees drip oil?

Oil dripping from cypress is a common physiological phenomenon. When the weather is hot in summer, cypress trees will also have their own heat dissipation methods, which will radiate excess heat in the tree body by overflowing resin to protect the tree body.

There are resin channels in cypress trees, which can form resin. After the resin is secreted, it will drip oil downwards.

Cypress can produce rosin because its xylem has a unique structure called resin channel. There are two types of resin channels: longitudinal and transverse.

Extended data:

Cypress is the general name of Cupressaceae plants, including Platycladus orientalis, Sabina vulgaris, Platycladus orientalis, Cupressus orientalis and other genera. The cypress has dense branches, many twigs and dense branches. The crown of cypress is completely surrounded by branches and leaves, and the other side can't be seen from one side, mostly dark green cones.

The bark is reddish brown and longitudinally cracked. Branchlets are flat. The leaves are scaly and small. Monoecious or dioecious, with a single cone crown. Cones are almost ovoid. Seeds ovoid, wingless.

There are about 150 species in the genus ***22 of Cupressaceae, distributed in the northern and southern hemispheres. There are 8 genera, 29 species and 7 varieties in China, which are distributed all over the country several times. In addition, 1 genus and 15 species are also introduced.

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