Raised bumps on Apple Tree

backyardnewbieMay 5, 2012

We are trying to grow fruits and vegetables organically in our backyard and always have so much trouble with our one apple tree :(

Today I found all these raised bumps on the apple tree trunk (see image) - what are we looking at? Anyone else out there with this problem? Is this fixable?

Thank you so much for sharing your ideas.

Here is a link that might be useful: Look here for images of the problem on flickr

Thank you for reporting this comment. Undo
fruitnut Z7 4500ft SW TX

Those are called burr knots. The tree is trying to form roots. Around here they aren't a problem that I've seen. But they can be a place where borers attack. It's sometimes recommended to let them root by mounding soil. But those look pretty high on the tree and if you let the scion root you may get a very big tree.

    Bookmark   May 5, 2012 at 3:31PM
Thank you for reporting this comment. Undo
backyardnewbie

Thank you fruitnut! They are about a foot and a half about ground level -- I am not sure I can mound soil around them unless I create a special raised bed for them. By "letting the scion root" are you suggesting I cut the branch below the burr knot and plant it in soil?

    Bookmark   May 5, 2012 at 5:29PM
Thank you for reporting this comment. Undo
fruitnut Z7 4500ft SW TX

You can't do anything that high up. Just watch for borer. You'll probably not have any serious issues.

    Bookmark   May 5, 2012 at 6:41PM
Thank you for reporting this comment. Undo
backyardnewbie

Thanks, fruitnut. Fingers crossed.

    Bookmark   May 6, 2012 at 12:38PM
Thank you for reporting this comment. Undo
Edymnion(7a)

He means that if the tree is trying to grow additional roots, its usually because it thinks it needs it. If this was happening below the graft union it would be good to hill up and let the tree have it's way.

However, being that far above the graft union you're looking at the scion trying to put down it's own roots instead of using the grafted rootstock it has now. Most of the time apple trees are on dwarfing rootstock as those trees can get HUGE on their own. As in 40+ feet huge.

If you let that scion root, it would start growing like a normal apple tree again, meaning it would grow very large very quickly (as well as possible added problems with soil pests and diseases).

So yeah, the scion is likely trying to grow bigger faster than the dwarfing rootstock will let it, so its trying to bypass the rootstock altogether with it's own roots. Long as you don't let it do so, nothing should happen. If it does, well lets hope you have lots of space...

    Bookmark   May 7, 2012 at 2:02PM
Sign Up to comment
More Discussions
My Spupreme plum turns into Alderman!
At Plant Hill Nursery! They don't have a email address,...
Konrad___far_north
Urgent grafting advice: Experiment Antonovka +/- B9 interstem
You can read my previous posts to see photos of my...
hungryfrozencanuck
The legendary Angelcot tastes blah
For those of you who have not heard of angelcots, they...
Scott F Smith
Can I store apple rootstock in the fridge?
I'll be getting a couple apple rootstocks the first...
edweather
pls recommend
Experienced Fruit Tree Growers, I suspect that all...
thecityman, Zone 7a/6b near Nashville
Sponsored Products
Westinghouse Lighting Finials and Pulls Red Spiral Glass Pull Chain 7763000
$12.97 | Home Depot
Chartreuse and Olive Gray Polyester Filled 18 x 18 Pillow
$49.80 | Bellacor
Berkshire Metal/ Rattan Wine Storage Rack
Overstock.com
Riverside Bark Recliner
Overstock.com
Cheers to Denmark Map Print
$22.99 | Dot & Bo
Ipanema Chandelier by Jonathan Adler Lighting
$1,815.00 | Lumens
MasterBath Bath Organizers Raised Panel 24 in. W Bath Storage Cabinet in Java
Home Depot
Rochefort 40 Inch Five-Light Hanging Lantern Black
$473.10 | Bellacor
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™