Purple under leaves of tomatoes is a trait of phosphorus deficiency. This is the most telling trait of that deficiency. The yellowing of seedling leaves (lower part) is the deficiency of a mobile nutrient.
Also know,Why do my tomato plants turn yellow and die?
Environmental issues, such as a lack of water, too much water, poor soil and too little light can also cause tomato plants to fail and die. Watering issues – When a tomato plant is under watered or over watered, it reacts the same way. It will develop yellow leaves and will look wilted.
Hereof,Are the leaves of tomato plants hazardous if eaten?
There are plenty of foods that, when eaten in high quantities, can prove harmful . For tomato leaves, this would require eating at least a pound and a half – an exceptionally large amount. Tomato leaves have a very pungent scent, which can certainly be off-putting to some, although not an indicator that they’re harmful .
In this way,Why do tomato seedlings leaves turn purple?
Planting tomatoes outdoors too early or in a greenhouse that is too cool can cause the leaves of young plants to turn purple. Even if the daytime temperatures are warm in spring, the nights may be too cool for tomatoes and this change in temperature can cause the leaves to curl and turn purple.
What causes tomato plants to yellow?
Fungal diseases are a common reason for yellow leaves on tomato. Fusarium wilt, which usually shows up on warm weather, typically causes yellow tomato leaves on one side of the plant, often beginning with the older, bottom leaves.