Why Do Pot Plants Turn Purple

Have you ever noticed that some plants have purple leaves or flowers? You might have seen them in a garden or in a pot at someone’s home. In the case of pot plants, it’s not unusual for them to turn purple, especially during certain phases of their growth cycle. Here’s why.

Genetics

Genetics plays a big role in the color of a plant. Certain strains of pot plants are more likely to develop purple leaves or buds. This is because these strains contain genes that promote the production of anthocyanins, which are pigments responsible for purple and blue hues. So, if you’ve purchased a pot plant with purple leaves or buds, it’s likely a genetic trait rather than an environmental one.

Temperature

While genetics is the primary cause of a pot plant turning purple, temperature can also play a role. When plants are exposed to cooler temperatures, they produce more anthocyanins. This is because the pigment helps protect the plant from damage caused by cold temperatures. So, if you notice your pot plant turning purple during a cold spell, this is likely the reason why.

Nutrient Deficiencies

While genetics and temperature are the most common reasons for pot plants turning purple, there are other factors that could contribute to the color change. One such factor is a nutrient deficiency. If a pot plant is lacking in certain nutrients, it may start to develop purple leaves as a way of compensating. Particularly, a phosphorus deficiency can cause purple coloring. However, this is less common than genetics or temperature being the reason.

Environmental Stress

Environmental stress can cause pot plants to turn purple. This could include things like drought, excessive heat, or exposure to pests or disease. In these cases, the plant may produce anthocyanins as a way of protecting itself. However, this is not a common reason for pot plants to turn purple as they are typically grown indoors and are not exposed to harsh environmental conditions.

Conclusion

There are many reasons that pot plants turn purple, but the most common cause is genetics. Certain strains of pot plants are more likely to develop purple coloring due to their genes. Temperature can also play a role, but it is not as significant as genetics. Nutrient deficiencies and environmental stress are less common causes but can still contribute. Regardless of the reason for the purple coloring, it can be a beautiful and unique characteristic of your pot plant.