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#1
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sick azaleas
Hi,
After blooming this year all my two-year-old azalea plants have been growing lumpy peanut-sized cysts on the tips of the branches. They seem to have been the starts of new leaves, but malformed. What's wrong! I'm in the Seattle area. Roberta |
#2
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sick azaleas
"Roberta L. Mueller" wrote:
After blooming this year all my two-year-old azalea plants have been growing lumpy peanut-sized cysts on the tips of the branches. They seem to have been the starts of new leaves, but malformed. What's wrong! I'm in the Seattle area. It sounds like the leaf buds are opening. Azaleas have large flower buds in the spring and smaller leaf buds. 1) Young leaves rolled and distorted could be either chemical damage or rhododendron gall midge. The rhododendron gall midge is a tiny insect that feeds in the spring and causes distorted leaves to emerge. There is no way to undo the damage once it has occurred. 2) Enlarged, crabapple-like, green or pinkish galls on young leaves and flowers are caused by Exobasidium leaf and flower gall. The galls become hard and turn white and eventually brown. Fungicides seldom provide control. Sanitation and warm dry conditions reduce infestation. It is seldom considered serious. -- Pardon my spam deterrent; send email to Visit my Rhododendron and Azalea web pages at: http://www.users.fast.net/~shenning/rhody.html Also visit the Rhododendron and Azalea Bookstore at: http://members.aol.com/rhodyman/rhodybooks.html Cheers, Steve Henning in Reading, PA USA http://www.users.fast.net/~shenning |
#3
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sick azaleas
"Roberta L. Mueller" wrote in message ...
Hi, After blooming this year all my two-year-old azalea plants have been growing lumpy peanut-sized cysts on the tips of the branches. They seem to have been the starts of new leaves, but malformed. What's wrong! I'm in the Seattle area. Roberta Azalea leaf gall. Caused by a fungus. Unsightly but doesn't kill the azalea. Remove affected leaves to reduce the amount of innoculum. Resume dancing. |
#4
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sick azaleas
"Roberta L. Mueller" wrote: Hi, After blooming this year all my two-year-old azalea plants have been growing lumpy peanut-sized cysts on the tips of the branches. They seem to have been the starts of new leaves, but malformed. What's wrong! I'm in the Seattle area. Roberta Azalea leaf gall - a very common problem in the area this year, due to our mild winter and wet spring.. It is not particularly serious but unslightly. Just prune off the affected parts. pam - gardengal |
#5
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sick azaleas
Ms Mueller doesn't state where she lives, but if it's the southern US, then
I'll bet on #2 below. Wet spring conditions cause these galls on a variety of our shrubs most notibly azaleas and camellias. Our sasanqua camellias are harder hit than the japonicas or reticulatas. The small and intermediate sized azaleas are worse than the tall southern indica types such a George Tabor. We trim off the affected areas, burn them, fertilize the bush and in no time you'd never know the difference. "Stephen M. Henning" wrote in message news "Roberta L. Mueller" wrote: After blooming this year all my two-year-old azalea plants have been growing lumpy peanut-sized cysts on the tips of the branches. They seem to have been the starts of new leaves, but malformed. What's wrong! I'm in the Seattle area. It sounds like the leaf buds are opening. Azaleas have large flower buds in the spring and smaller leaf buds. 1) Young leaves rolled and distorted could be either chemical damage or rhododendron gall midge. The rhododendron gall midge is a tiny insect that feeds in the spring and causes distorted leaves to emerge. There is no way to undo the damage once it has occurred. 2) Enlarged, crabapple-like, green or pinkish galls on young leaves and flowers are caused by Exobasidium leaf and flower gall. The galls become hard and turn white and eventually brown. Fungicides seldom provide control. Sanitation and warm dry conditions reduce infestation. It is seldom considered serious. -- Pardon my spam deterrent; send email to Visit my Rhododendron and Azalea web pages at: http://www.users.fast.net/~shenning/rhody.html Also visit the Rhododendron and Azalea Bookstore at: http://members.aol.com/rhodyman/rhodybooks.html Cheers, Steve Henning in Reading, PA USA http://www.users.fast.net/~shenning |
#6
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sick azaleas
Hi, everyone,
It looks like you all agree it's azalea leaf gall and it sure does seem right. They are kind-of hard, white, and turning brown, as Stephen suggests too. They do have some new leaf growth, so maybe they'll be okay. I'll get busy and cut the things off. Thanks very much for your advice!!! Roberta "Pam" wrote in message ... "Roberta L. Mueller" wrote: Hi, After blooming this year all my two-year-old azalea plants have been growing lumpy peanut-sized cysts on the tips of the branches. They seem to have been the starts of new leaves, but malformed. What's wrong! I'm in the Seattle area. Roberta Azalea leaf gall - a very common problem in the area this year, due to our mild winter and wet spring.. It is not particularly serious but unslightly. Just prune off the affected parts. pam - gardengal |
#7
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sick azaleas
"Roberta L. Mueller" wrote:
It looks like you all agree it's azalea leaf gall and it sure does seem right. They are kind-of hard, white, and turning brown, as Stephen suggests too. They do have some new leaf growth, so maybe they'll be okay. I'll get busy and cut the things off. Be sure to dispose of them either in the trash or burn them. If left lying around, they can reinfect the plant. -- Pardon my spam deterrent; send email to Visit my Rhododendron and Azalea web pages at: http://www.users.fast.net/~shenning/rhody.html Also visit the Rhododendron and Azalea Bookstore at: http://members.aol.com/rhodyman/rhodybooks.html Cheers, Steve Henning in Reading, PA USA http://www.users.fast.net/~shenning |
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