There were several good shots at analyzing Friday’s unhappy rhododendron. Mature leaf size can be determined by light levels, as both Lisa B and Tom & Paul suggested. Moving a plant from a low to high light environment could cause this change in leaf size. This rhododendron hasn’t been recently transplanted, however, so we can eliminate light levels as a cause. (And there was no other impediment to light, such as the presence of shading plants.)… Continue reading this article “The roots of the rhody problem”
Tag: woody
Friday puzzle: unhappy rhododendron
Today we have a diagnosis question. Consider this unhappy rhododendron:
While there is more than one problem with this poor thing, the one I’d like you to think about is why the newer leaves are smaller than the old leaves. (They are fully mature.) There are two parts to this question:
1) What is the physiological reason that the leaves are smaller? (In other words, what is directly causing this difference?)
2) Knowing this, what does this tell you about the underlying problem?… Continue reading this article “Friday puzzle: unhappy rhododendron”
When trees attack!
We typically think of trees as the ‘good guys’; they shade our homes and yards, they take up carbon dioxide and pollutants from the air, they give us oxygen. What’s not to like? Well, like a lot of good guys, trees can also have a dark side. One of the more sinister habits some trees have is getting into sewer lines. Some studies estimate that trees are responsible for up to half of sewer line repair costs. … Continue reading this article “When trees attack!”
Tree terrors continue
You might remember back in October 2009 I gave one of the first Friday quizzes. The featured tree had epicormic shoots, and Monday’s answer revealed the neglected wire staking that was slowly girdling the main trunk. (Be sure you click on those links to see what the tree looked liked in 2009.)
I thought you might be interested to see what this tree looks like now:
A picture is worth a thousand words….many of those unprintable.… Continue reading this article “Tree terrors continue”
Unspeakeable Acts of Pruning
(Hey, I think it’s Tree Week on the GP!)
Our land has a nice buffer of big, old oaks, hickories, and maples between us and the two-lane highway. Power and phone lines thread through the middle of them. Thus, I have nightmares about orange Asplundh trucks.
So with much concern, I noted that utility crews and
subcontractors have been out in full force in our rural area,
inexplicably leaving one tree and then “pruning” another.
I pulled over and snapped this latest atrocity last night.… Continue reading this article “Unspeakeable Acts of Pruning”
Tree teaser untwisted
Once again you had some great diagnoses! The popular view was neglected staking material, and you were right:
Peter’s answer was my favorite (I love puns – the worse the better!). Tom, I hestitate to ask about your previous experience here….
As usual, thanks to all of you for playing our quiz. I’ll try to be better about doing this every Friday. Our survey results indicated you like this feature a lot.
Trees can be good plumbers
A short follow up to last weeks post on girdling roots. Just to reiterate, the point of the post was that we need to be careful not to jump to conclusions when assessing tree problems. It’s important to look beyond the first defect we see and consider additional causes. And to also reiterate, girdling roots can be a serious problem and can lead to tree failures. The photo below shows an example of tree that was both planted too deep and had stem girdling roots. … Continue reading this article “Trees can be good plumbers”
Tree teaser
Why is this western red cedar (Thuja plicata) so angry? (Hopefully you can see the two “eyes,” nose and mouth.)
Answer on Monday!
Girdling roots: The source of all evil in the world?
One of the most widely discussed topics in arboriculture and tree care these days is the problem of girdling roots. Virtually every conference or workshop on tree care has a speaker or speakers on how poor planting technique or poor nursery practices lead to girdling roots and their subsequent correlation with poor tree performance, tree failures, global warming, the soaring Federal budget deficit, and the batting average of the Seattle Mariners. Before we go any further let me state categorically that I do not think girdling roots are a good thing; nor do I think any of the consequences mentioned are a laughing matter – especially the Mariners’ batting average. … Continue reading this article “Girdling roots: The source of all evil in the world?”
Planting trouble: multiple trees in one hole
[I enjoyed Jeff’s Valentine story so much that I thought I’d stick to the theme of togetherness…for better or worse.]
A week or so ago a reader asked about the practice of planting three or four fruit trees in the same hole. Having not heard of this before, I checked on the web and found many “how to” pages geared to home gardeners who either want a longer harvest of a particular fruit (early to late) or a mixture of different species. … Continue reading this article “Planting trouble: multiple trees in one hole”