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3 questions for yard in northern Anne Arundel County, off Nabbs Creek #239314

Asked April 24, 2015, 12:28 PM EDT

Hello. I have 3 questions: 1.) Two years ago someone transplanted two azalea bushes for me and consolidated them in a single spot elsewhere in my yard. Last year they both blossomed, but this year, one of them is dead (see image). My azalea is just about to open. I'm wondering when is the best time to cut away the dead portion (and do I need to uproot it, or can I just cut it to its base? I'm guessing its roots are intertwined with the living/healthy one). 2.) I planted a Malus brandwyine crabapple in my front yard about 9 years ago when it was about 10' tall; last year I got leaves but no buds/fruit. I thought it was due to the strange/mild temperatures we'd gotten the winter before. But then I noticed what I call a "canker" that had always been evident, but it had gotten *huge* (see image). Ended up treating it with Bayer Tree & Shrub Protect & Feed (kind of thing I try to avoid) and this year it has buds and is about to blossom, but I was wondering if you could make a guess what might be responsible for that canker, and let me know if there are any natural treatments for it? 3.) My backyard is largely bare with just some violets that have propagated--it is partial sunny at best (white mulberry partially growing over, creating shade) and the soil is clay for about 6-8 inches down, moving sand, then quickly water table (4-6' down?). I would like to put down a ground cover that is NATIVE, liked by pollinators, and ideally fragrant (would be nice if had a pretty flower or interesting shape, but I don't want to be too greedy). Was wondering if you had any suggestions. Most important is that it is native and draws pollinators--the more, the better! Thanks for any guidance you could provide.

Anne Arundel County Maryland

Expert Response

1) Scratch the bark with your fingernail. If there is no green under the bark, cut out those dead portions. If it is dead, the azalea can be cut off at the base. That way you do not disturb the roots of the healthy azalea.
2) We cannot say what caused the canker on the crab apple, but no spray or anything else is going to get rid of it.
3) https://extension.umd.edu/hgic/plantain-leaf-pussytoes  https://extension.umd.edu/hgic/golden-groundsel-or-golden-ragwort
Two other groundcovers that come to mind are partridgeberry and straw lily.
https://extension.umd.edu/sites/default/files/_images/programs/hgic/Publications/HG120_NativePlantso...  For pollinators you might want to plant an assortment of groundcovering plants.  You might go to  your local garden center and see what they recommend and then google it to see what insect and disease problems it might have and see whether it looks like it will meet with your expectations.  vw



Thank you for your prompt reply. For the azalea, if there's no green under the bark, does it matter *when* I cut it? (Feel like I heard that you shouldn't just before blossoming, but of course this one is dead, so I suppose it doesn't matter.)
The Question Asker Replied April 24, 2015, 3:37 PM EDT
You can remove dead wood from a woody plant any time you observe it.  And, in fact, your 'dead' azalea will not recover from severe pruning, so you may as well remove it.  You should have the soil tested before replacing it with another azalea.  Although, there is no reason to believe that the soil pH was the cause of the plant's demise, it would be appropriate to ensure that the pH is in the 4.5 range.
LS

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