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Laura84
Full Member
Posts: 15
Joined: Tue Jun 17, 2014 7:15 pm
Location: Spain

Mint with spots

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Hi everybody,

I have found that one of my mint have little brown spots in the reverse of the leaves (you can notice them in the other side too).

I don't know if you can see it well in the photo. At first sight, I thought they were eggs from some insects but I tried to remove them with my hands and I couldn't so I don't know if it a fungi, eggs or...

To make a comparision they are like the spores of ferns.

Do you have any idea?

Thank you!!!!

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Lindsaylew82
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Posts: 2110
Joined: Thu May 22, 2014 1:26 am
Location: Upstate, SC

Re: Mint with spots

Looks like alternaria. Fungus. Remove the damaged leaves, bag them and trash them. Baking soda spray (4tsp to 1 gallon water- some add oil and molasses), neem oil, cornmeal spray(1 cup cornmeal soaked in 1 gallon of hot water for 1 hour or until milky, strained).

Fungal infections are hard to treat once they get going. Weekly treatments are good prophylactic practice.
Lindsay
Upstate, SC
USDA Zone 7b/ Sunset Zone 31

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Laura84
Full Member
Posts: 15
Joined: Tue Jun 17, 2014 7:15 pm
Location: Spain

Re: Mint with spots

Thank you Lindsaylew82. I'm going to try and I hope to be able to save my plants.
Last days, I've seen more spots and ill leaves in my mints and lemon balm :(

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