North American Fruit Explorers mailing list at ibiblio

[Lee Reich <garden@leereich.com>]

That sounds like crown gall disease, which will survive in the soil and can infect other trees planted there. If it was not there before, it could have come in on your nursery plants. It caused by Agrobacterium tumefaciens and can infect a wide range of plants.

For more, see http://gardening.wsu.edu/library/lpro004/lpro004.htm

Lee Reich, PhD

garden@leereich.com 

Books by Lee Reich:

The Pruning Book

Weedless Gardening

Uncommon Fruits for Every Garden

A Northeast Gardener's Year

On Oct 5, 2007, at 1:49 PM, Jwlehman@aol.com wrote:

In a message dated 9/30/2007 9:50:54 PM Eastern Daylight Time, Jerrydana5@aol.com writes:

I had three yearling apple trees suddenly die without warning this summer.  When I dug them up, it looked like they had root gall-a small round gall- on their roots.  I want to replace them.  Can I plant them in the same spot?  What causes root gall?  How do I prevent it from killing other trees?  These  were from different sources.  Jerry in southern Indiana

Hi Jerry,

Noticed that no one replied to your questions. I'll answer generally and may not be 100% correct.

No, do not plant new apple trees in the same spot. The fungus is in the ground and will infect the new trees more quickly. To my knowledge there is no cure, only prevention. Some rootstocks may be more resistant to crown gall than others, but can't help you there off the top of my head.

Ed Fackler needs to answer your question. He is Indiana's apple expert.

Jerry, also Indiana.


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