Why do succulents turn green in summer

It is something that many people have no choice but to do for succulents to turn green in summer. Why do succulents turn green in summer? Most people actually know the reason, that is, the temperature is high, they are busy protecting their lives, and there is less light. The essential reason is that changes in the summer environment (heating) and protective measures (shading) cause the anthocyanin synthesis of succulents to be blocked, which is inferior to chlorophyll, and then the succulents gradually turn green. And when your succulents slowly turn green, some people’s succulents are still very colorful. Therefore, knowing more about anthocyanins may solve your succulents turning green dilemma.


What is anthocyanins

Anthocyanin is a flavonoid produced during plant metabolism, a branch of the flavonoid pathway, and one of the important pigments that determine the color of flowers, fruits, seed coats, stems, leaves and roots of angiosperms. one. It is a water-soluble natural pigment that is widely present in the vacuoles of plant epidermal cells, showing orange, red and blue colors. For example, the color of maple leaves, purple cabbage, dragon fruit, blueberries, and grapes has a great relationship with anthocyanins, and various succulents with excellent color performance are no exception.

Succulents turn green in summer, precisely because the summer environment is not conducive to the formation of anthocyanins, and the high temperature in summer will accelerate the degradation of anthocyanins, causing the succulents to lose their bright colors and return to the green color dominated by chlorophyll.


So what are the factors that are conducive to the formation of anthocyanins? 1. Low temperature (very important). 2. High light quality, rich in UV-A (ultraviolet rays of 320-400 nm) and UV-B (ultraviolet rays of 290-320 nm), blue light and red light have similar effects, while green light is slightly weaker. 3. High light intensity. 4. PH value, the higher the concentration of cell fluid, the more conducive to the formation (that is, drought and water shortage). To sum up, it is the succulent coloring elements that everyone knows, low temperature, light, and water control. And doing these things is actually for the formation of anthocyanins.

So what are the factors that promote the formation of chlorophyll? 1. It is also light, the activity of many enzymes in the process of chlorophyll biosynthesis is affected by light (but obviously the light intensity required is not as much as anthocyanins.). 2. At high temperature, the biosynthesis of chlorophyll needs to go through a series of enzymatic reactions. If the temperature is too high or too low, the enzymatic reaction will be inhibited, and the original chlorophyll will even be destroyed.Generally, the optimum temperature for plant chlorophyll synthesis is 30℃. 3. Nitrogen and magnesium are the constituents of chlorophyll molecules, and their lack will affect the formation of chlorophyll. 

Post time: Mar-11-2022