As part of our discussion of the relative merits of fall planting, Linda mentioned an article in Arboriculture and Urban Forestry that suggests that frequent, light irrigation might be better for landscape trees then the usual recommendation of infrequent soakings. While I will withhold final judgment until I see the article (I did a scan of the last two year’s table of contents for A&UF but missed the article in question), here’s my rational for following the standard recommendation.… Continue reading this article “Good to the last drop”
Flower demystification
As Paul suspected, this is a Phalaenoposis flower. Here it is again, shown next to another flower on the same plant (but different stalk):
As to the second question – why does it look this way – there could be a number of reasons. I’m leaning toward environmental. This particular flower stalk is an old one – after it had bloomed initially (with normal flowers), we left it on after the flowers fell. As often happens, new flower buds appeared, but all of them have been abnormal. … Continue reading this article “Flower demystification”
Friday puzzle – Mystery flower
What am I? And why do I look like this?
Neither the flower nor photo has been altered. But it is a tricky question.
Answer on Monday!
Right and Left
Just got a picture of the cover of a new book I’ve got coming up soon. It’s a collaborative project with an old friend of mine who is a political science professor at UNC Charlotte. We look at a bunch of different environmental issues, different things that the government could do about these issues, and then we rate these options by how the well the right and left wingers would like them. Sure to tick people off! … Continue reading this article “Right and Left”
Permaculture – my final thoughts
We’ve had some good, vigorous discussion about permaculture, specifically around the book Gaia’s Garden. I’ve pointed out some problems with the author’s understanding of relevant plant and soil sciences and will wrap up this week with a look at the glossary and bibliography.
Glossary
The glossary contains a number of scientific-sounding words and phrases with unscientific definitions; for example:
“Buffer plants: Plants placed between guilds or between allelopathic species. They should be compatible with the trees in each guild and should have a positive effect on one or both of the guilds to be linked.”… Continue reading this article “Permaculture – my final thoughts”
Is Black The New Brown?
Mulch is always an interesting point of discussion as well as the topic of several past GP posts. But I honestly can’t recall if we’ve covered dyed mulch, and can’t search the site, so here goes.
I recently received a request for information from Debbie Dillon, a fine Urban Horticulturist with Virginia Cooperative Extension. She noted the increased use of dyed mulch in the Northern Virginia area, and has been fielding questions from both landscape designers and homeowners regarding the safety of said mulch and the potential for harmful effects on plants.… Continue reading this article “Is Black The New Brown?”
Is Fall Really a Great Time to Plant Trees?
One of the joys of working on a university campus is that construction never seems to end. As near as I can tell there are about 3,000 orange construction barrels that permanently reside on the MSU campus that simply get shuffled from one end of campus to the other every few months. Along with all the construction comes a never ending series of new landscape projects. Driving by one of the most recent projects the other day got me to thinking about the myth of Fall planting. … Continue reading this article “Is Fall Really a Great Time to Plant Trees?”
Friday puzzler unearthed!
Lots of good guesses this week! As many of you realized, this is a huge tree root making the best of a small tree pit. But it’s not a Norway maple (sorry John) or a mulberry (sorry Robert), but a sweetgum (Liquidambar styraciflua) (congratulations Brian!). (You can see the little mace-like seed pods on the ground.) The root does resemble a bicep (“Treebeard’s elbow”) flexing to crack the concrete (aka Robert’s Concretious blandmulsia):
Though sweetgum can be nice urban trees, their roots are quite vigorous and can lift sidewalks several inches above grade as they increase in diameter:
>
Thanks for all the entries – our readers are smart and funny!
Friday’s plant puzzler
What am I? Lots of clues here…
Answer and more photos Monday!
Do Organophosphates cause ADHD?
Ever since Monday’s post I’ve been preoccupied thinking about that article which was mentioned in the comments section by Daniel http://www.cnn.com/2010/HEALTH/05/17/pesticides.adhd/index.html?iref=allsearch . This article basically summarized a study that seemed to show that ADHD in children was related to exposure to organophosphate insecticides.
Articles like this appear all of the time in mainstream media and they scare the bejezus out of us because, after reading them, we end up thinking “Holy crap! We’re killing ourselves and ruining our society with these insane chemicals!”… Continue reading this article “Do Organophosphates cause ADHD?”