Dogwood Disease or Leaf Scorch?

Discussion in 'Fertilizers, Pesticides and Diseases' started by JONATHAN CASEY, Jul 8, 2018.

  1. JONATHAN CASEY

    JONATHAN CASEY LawnSite Member
    Messages: 23

    I have 3 dogwood trees on my property in the Boston area and all 3 of suffering from something. I looked at pictures and researched but I can’t determine if this is from a disease or just stress from the very very hot dry weather we have had for 2 weeks. I’ve attached pictures of each of the 3 trees leaves, one is considerably worse than the other 2.

    Any help on ID of the problem would be very much appreciated! I don’t know if I should water them or apply some kind of fungicide.

    Thanks in advance

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  2. cotyledon

    cotyledon LawnSite Senior Member
    Messages: 688

    Those ain’t dog woods
     
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  3. OP
    OP
    JONATHAN CASEY

    JONATHAN CASEY LawnSite Member
    Messages: 23

    This is the full tree. I thought it was a round leaf dog wood. But I’m not an expert... it flowers with white flowers every spring

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  4. grass4gas

    grass4gas LawnSite Senior Member
    Messages: 771

    Those are ornamental Pear trees. They are actually in the Rose family and are subject to getting disease.

    I would fertilize them in the fall and do preventative fungicide applications when they begin to leave out. Typically three applications a month apart are needed. Sometimes more if it is a rainy summer.

    You’re going to need to know what type of disease it is before you begin to spray so you know which fungicide to use.
     
    americanlawn likes this.
  5. OP
    OP
    JONATHAN CASEY

    JONATHAN CASEY LawnSite Member
    Messages: 23

    I think your right the pictures of the ornamental pear seem to match quite well. Now to try and figure out what’s wrong with it! Thanks for help with the tree ID.



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  6. hort101

    hort101 LawnSite Fanatic
    Male, from S.E. New England
    Messages: 17,544

    Maybe pear rust
     
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  7. OP
    OP
    JONATHAN CASEY

    JONATHAN CASEY LawnSite Member
    Messages: 23

    That was my first thought after researching but the black spots present on the picture in my second post don’t seem to align to anything I can find.
     
  8. TPendagast

    TPendagast LawnSite Fanatic
    Male
    Messages: 16,008

    I was thinking it looked like cedar Apple rust but wasn’t an apple tree
    I’d go with pear rust as well
     
    hort101 likes this.
  9. grass4gas

    grass4gas LawnSite Senior Member
    Messages: 771

    Too late to do anything now for them. You will need to attack them in the spring.
     
  10. OP
    OP
    JONATHAN CASEY

    JONATHAN CASEY LawnSite Member
    Messages: 23

    Thank you for the help it definitely is pear rust. And after doing some more reading I see that Junipers are the winter time host and I have a few junipers next to the worst offender so I have to figure out if they need to be transplanted or removed. Thanks for the help identifying, hopefully they make it!
     
    cotyledon likes this.

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