Knowledgebase
black spots on pear tree leaves #870321
Asked May 27, 2024, 6:20 PM EDT
Cuyahoga County Ohio
Expert Response
Hi Elaine,
Thank you for using Ask Extension. I'm sorry the black spots are back on your pear tree. Unfortunately, I am not able to look up your question from a year ago so I'm not able to look at any pictures. Without pictures it is extremely difficult to give a correct diagnosis.
Let's try this. I have found an article, Pear Disease - Leaf Blight and Fruit Spot (psu.edu), that has an excellent picture of pear leaves with black spots. If this looks like your leaves, you'll need to treat your tree accordingly. The following article, Disease Control for Home Pear Orchards (ct.gov), explains treatment procedures.
If the picture in the article, doesn't look like your pear leaves, please send me some pictures and we can consider other problems.
The Ohio State University Extension has published an excellent guide, Midwest Home Fruit Production Guide - Cultural Practices and Pest Management that may be available at your county's extension office. It is an invaluable resource and may help you with any future concerns.
Good luck,
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From: "Ask Extension"To: "Elaine Ward"
Cc:
Sent: Wednesday May 29 2024 11:37:37AM
Subject: Re: black spots on pear tree leaves (#0140241)
So glad we were able to help
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From: "Ask Extension"To: "Elaine Ward"
Cc:
Sent: Wednesday May 29 2024 4:11:51PM
Subject: Re: black spots on pear tree leaves (#0140241)
Hi Elaine,
I’m in Hawaii right now and internet is iffy. I’ll be back home next week. Your county extension office should be able to help you with your tomato questions. There also should be information on the Daconil label.
Let me know how it goes.
Hi Elaine,
I hope your problem with the yellowing and spotted leaves on your tomatoes has been resolved. If not, here are a few suggestions that may help you.
Yellowing of the lower leaves and then subsequent yellowing upward through the plant may be signs of a fungal disease such as Fusarium or Verticillium. These are quite common on tomatoes. Fungal diseases can be treated with a fungicide such as Daconil. Repeat spray intervals and the last safe application times before harvesting edible crops are listed on the label.
Just remember - Tomatoes need 1 - 1/12 inches of water per week to maintain plant health. Deep, slow watering encourages good root formation and is better than short, frequent irrigation. Avoid wetting foliage which can lead to fungal diseases.
Mulching reduces weeds and maintains consistent moisture levels. Leave space around the stem.
Tomatoes can have numerous problems which can be controlled with proper cultural practices. A resource for information on problems is the OSU website: Growing Tomatoes in the Home Garden | Ohioline (osu.edu)
I hope this is helpful.
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From: "Ask Extension"To: "Elaine Ward"
Cc:
Sent: Tuesday June 18 2024 5:58:40AM
Subject: Re: black spots on pear tree leaves (#0140241)
Hopefully you'll be able to harvest some pears later this summer/fall. My husband gave up on pear trees; found cherry trees to be much easier.
Take care