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”

Random thoughts from the NW Flower and Garden Show

Last week was Seattle’s NW Flower and Garden Show. This multi-day extravaganza features display gardens, educational seminars, and many opportunities to spend $$$. I had a little free time one day and shot some pictures, which I present here along with my commentary:

The Good

The “perfect” lawn is no longer just a monoculture of grass.  At least two of the display gardens had flowers scattered for a designer version of ecoturf:

And a very cool repurposing of old heating vent covers as part of a patchwork of groundcovers:

The Questionable

A gorgeous Japanese maple (Acer palmatum), “born” in 1893:

I’m sorry.… Continue reading this article “Random thoughts from the NW Flower and Garden Show”

Mystery teeth revealed

Friday’s puzzle was tough!  Several of you were on the right track – this is a carnivorous plant. Right away Deb suggested a pitcher plant (then got sidetracked with chestnuts), but Derek was spot on with his guess of the “spiky bits” on a Nepenthes pitcher:

What the function of these spiky wings are is not clear to me; I did a little checking in the literature but failed to find anything convincing.  It does seem to suggest a close relationship with fly traps. … Continue reading this article “Mystery teeth revealed”

Friday mystery teeth

I’ve spent most of this afternoon at the NW Flower and Garden Show.  During my visit, I snapped a photo of this toothy plant part:

So the questions for today are….

What is this plant part?
What plant did it come from?
(And if you know its scientific name, that actually answers both questions at once.)

My husband is convinced this is too small a part of the plant for anyone to figure out the answesr. … Continue reading this article “Friday mystery teeth”

Breaking up Tree Week with an Important Announcement! (Or Not — depending on how you feel about shameless plugs)

OK, here it is, my one and only shameless plug — because my publisher says: Hey! You need to at least let people know that the book exists!

So — I’m excited to say that my next book, How The Government Got In Your Backyard, which I co-wrote with my good friend (and old college roommate) Eric Heberlig, who is an Associate Professor of Political Science at UNC Charlotte, is finally out.

In case it isn’t immediately obvious, I love to write.… Continue reading this article “Breaking up Tree Week with an Important Announcement! (Or Not — depending on how you feel about shameless plugs)”

Fascinating web site: when trees and objects collide

One of our international readers, Johannes, sent along this web site of photographs demonstrating what happens when trees meet immobile objects.  The text is in German, but the photos are self-explanatory.

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.

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!

Friendly firs follow-up

Looks like I was too easy on you Friday!  Most of the you correctly noted that this “devil’s fork” is most likely the result of topping by a human or nature:

Devil's fork

Given that there are powerlines nearby, and more importantly a view to the water downhill, it’s likely that someone deliberately headed this Douglas fir (Pseudotsuga menziesii) back.  On the other hand, this species will commonly lose branches, and often their leaders, in a windstorm.… Continue reading this article “Friendly firs follow-up”

Friday quiz – too close for comfort

Since Valentine’s Day is coming, today’s quiz features a situation that’s a little too close for comfort:

This is not the result of three trees being planted too closely together, either by a person or by nature.  What is it the result of?

Answer and another picture on Monday!