Here's a common thing when it comes to tomato leaves; the leaves turn into purple. The most common reason for tomato leaves turning purple is potassium deficiency while other nutrient problems, as well as leaf burn and viral and pest infestations, may also cause this issue. Young tomatoes cannot absorb potassium as easily from cold compared from warm soil. Tomato plants may also struggle to absorb phosphorous from cool and wet soil, and can experience stunted growth, necrotic spots on the leaves, and leaf cupping.

CLICKING HERE WILL REDIRECT YOU TO THE BLOG PAGE.

Source: The Spruce