Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
A. The purple color is a pigment called anthocyanin. It is produced by plants that are growing under some stress. It is often caused by cold growing conditions. It also often happens during flowering and is a deficiency of either potassium or phosphorous, so you will need to increase your nutrient levels.
