Tomato Leaves Turning Black?

Tomato Leaves Turning Black - small tomato plant in the yardThe leaves on my tomatoes growing outside are turning black. I live in New Zealand.


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Bronze Post Medal for All Time! 140 Posts
January 15, 20201 found this helpful
Best Answer

This is a fungal disease caused by other insects. They have an natural product that you can buy from your home improvement that will help with the fungal and strengthen the vine!

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October 1, 20220 found this helpful

Also cutting and disposing of the lower 6 inches of branches of the tomato plant as it grows in height; helps prevent a number of diseases that can often come from the ground in the first place. It saves the money from the need for purchase of any 'disease curative' product in the first place.


It does occur more often too, if the last crop grown in that patch of soil before the tomatoes was left to die off and sit in the ground before removal and disposing of it.
Soil hygiene is critical to plant health and if growing organically should be practiced for best results... along with crop rotation and growing 'restorative crops' for the soil's more natural replacement of nutrients, in-between vegetable crops. But this of course can only be practiced if there is enough room on the property to have a large enough vegetable gardens to enable this as best practice. Sadly the overcrowding of sights now seen being built doesn't leave room too often for growth of ANY garden product at all. It is extremely sad.

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Bronze Post Medal for All Time! 105 Posts
January 15, 20200 found this helpful
Best Answer

This happens a lot of times with tomato plants. When I have had this problem in the past I mix some mild detergent with water and spray the leaves of my plants. If you have cut the plants you can not do this for 24 hours.

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