Last week Jeff kicked off a lively discussion about invasive plants. Let me state up front that no one on this blog is promoting invasive plants. But the issues surrounding invasive plants are extremely complex and have profound implications for many groups with whom we work in landscape horticulture and urban and community forestry. It … Continue reading Are natives the answer?
Over the course of this winter there have been several days when the temperature plummeted after the passage of an Arctic front as strong winds blew frigid air into parts of the United States. It can happen in other parts of the world, too. When this happens, the National Weather Service (NWS) often issues Wind … Continue reading Does Wind Chill Affect Plants?
In this late fall edition of People and Plants we’ll take a look at an early American female botanist, Martha Daniell Logan. She was born in 1704 in St. Thomas Parish, South Carolina, the second child of Robert Daniell and his second wife Martha Wainwright. After her father died in 1718 she inherited his land … Continue reading People and Plants
Fall is for planting they say when folks talk about shade trees. But is it? When is the best time to plant a tree? In this blog I will cover tree planting times and other particulars, the drawbacks and good points of these decisions. So is fall the best season to plant a tree? Of … Continue reading Fall is for planting?
Last week there was much ballyhooing over a new article on the benefits of native plants in supporting insect populations. I’ve posted on the fallacy of native plant superiority before, pointing out that landscape biodiversity not plant provenance, is most important for supporting all types of beneficial wildlife. Despite robust, published evidence to the contrary, … Continue reading Recognizing bad science by honing your B(ad) S(science) detector
One of the most annoying weeds in garden and landscape beds is horsetail (Equisetum spp.), a genus native throughout North America and most of the rest of the world. They have survived since prehistoric times because they are highly adaptable to their environments and are almost impossible to eradicate. There is great debate among gardeners … Continue reading Horse(tail) sense or nonsense?
We are again in the midst of excessive heat events in many parts of the United States. Records were broken for the highest temperatures ever recorded just a few days ago. This is also a time when the days are at their very longest, so high temperatures have large impacts on plants in landscapes. High … Continue reading I’m hot! So are my plants!
As many parts of the US face drought or dryer than normal conditions and issues about water availability especially in the western states, many gardeners are reassessing their relationships with plants and irrigation. Many gardeners, especially in the west, are replacing their lawns and landscape plants with more drought and dry-weather tolerant options. But there … Continue reading Don’t get hosed: exploring the efficiencies of garden and landscape irrigation systems
Biological control is the use of natural enemies such as predators, parasites/parasitoids, and pathogens of pests in order to suppress or control them. This is a great tool for pest control and we hear about biological control a lot, especially when we talk about IPM (Integrated Pest Management). It usually comes with the classic imagery … Continue reading Buying lady beetles and mantids for your home gardens is probably not the best pest control strategy
I am constantly slaying horticultural snake oil dragons. There is so much misinformation on the web and even within University/Extension publications. In this blog I turn my attention to compost–a subject that is almost universally cherished by gardeners, gardening groups and horticulturists. Unfortunately there are a lot of misnomers about compost. Plants are composed of … Continue reading The Yin Yang of Compost
