ALL TOO MANY HEADLINES in the science section lately speak of trees in trouble, of various forest pests and other pressures that are imperiling these precious living resources. From Dr. Murphy Westwood of Morton Arboretum in Lisle, Illinois, I got a status update on some of the most talked-about issues, including emerald ash borer (above, alongside detail of white ash in fall foliage) and also whether we gardeners and homeowners can play any role in shifting the balance of things toward the positive column.
Westwood (below, right, in the lab) directs the Global Tree Conservation Program at the arboretum, which strives to save threatened trees from extinction through collaborations with botanical gardens and universities, and others in China, Europe, and Mexico, as well as throughout the U.S. She has a particular interest in oaks—including a number of American species in trouble—which we also talked about.
Read along as you listen to the Nov. 6, 2017 edition of my public-radio show and podcast using the player below. You can subscribe to all future editions on iTunes or Stitcher (and browse my archive of podcasts here).
emerald ash borer and threatened oaks,with morton’s dr. murphy westwood
Q. Before we get started on trees in trouble, I believe I read that in 2015, the Morton Arboretum had its first millionth annual visitor tally. Is that correct?
A. That’s right.
Q. Tell us a little bit about the place.
A. Oh, it’s wonderful. It’s a 1,700-acre public garden in the western suburbs outside of Chicago. We have over four and a half thousand different species of trees and woody plants on display here. About half of the collection is more formal collections, formal gardens. There’s a hedge garden and children’s garden that’s very
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Flowering shrubs can grace your garden, adding color, interest and sometimes fragrance to the home landscape. For the biggest, showiest flowers, you’ll also need to take into account the sun exposure of the garden site. But never fear, there are flowering shrubs for landscaping that like sun and others that like shade.
Commonly known as the Winter melon and Chinese watermelon, Ash gourd is native to Japan is found commonly throughout India. When touched, the fruit leaves an ash-like residue on hands. That’s the reason behind its interesting name! Here’s all you need to know about growing Ash gourd!
Have you looked in your fridge lately? What food items do you discard most often? Do you have any vegetables or herbs that might be a little past their prime? In the United States, nearly half of all food produced is never eaten; about half of that comes from households, consists of fruits and vegetables, and adds up to about $150 a month wasted. Just because a fruit or vegetable isn’t perfect or might be riper than we prefer, that doesn’t mean it’s unsafe or inedible. Often, our first thought is to discard it into the garbage, but are there other options?
Start a new holiday tradition with your family this year by making orange pomander balls. They can be hung on your Christmas tree as ornaments, attached to garlands, or used in a holiday centerpiece with live greenery. These delicious-smelling, clove-studded oranges will fill your home with a festive spicy fragrance.
Quick backstory: You may remember Charley, co-author of my most-used field guide “Tracks and Sign of Insects and Other Invertebrates,” from our recent interview about galls and leaf mines, two of his specialties.(I’m giving away two more copies; enter by commenting in the form way down at the bottom of this page, after reading the entry details in the tinted box just before that. The book can help you to know what you are seeing when you look closer, too—kind of like always having Charley by your side.)When that story ran, Charley had noticed a photo I used to accompany it–of a squiggly “leaf mine” I’d observed in my Asian-native big-leaved perennial called Petasites. He’d wondered if it was caused by the insect that feeds in a few different genera in the tribe Senecioneae (including some native American botanical cousins of Petasites). Why don’t you come try to find out, I’d suggested—and while you’re here, why don’t we have a
Lee’s tips for growing pawpaw or American persimmon couldn’t make it sound more appealing, or simple:“Plant it, water it, and keep weeds and deer away for a couple of years, and then do nothing,” he says. No fancy pruning (like those apples crave), no particular pests–and a big, juicy harvest. More details on how to choose which variety to grow are included in the highlights from the April 29, 2013 edition of my public-radio show and podcast, transcribed below. To hear the entire interview, use the streaming player below. You can subscribe to all future editions on iTunes or Stitcher (and browse my archive of podcasts here).growing ame
IF YOU ARE STILL USING any synthetic chemicals on your lawn, I hope you will stop. So does Paul Tukey. When he founded SafeLawns in 2006, Paul says, “It didn’t occur to people that their lawns could be dangerous.”“The sad reality is that we know that a lot of the chemicals used to grow the lawn (the fertilizers), or the chemicals used to control weeds or insects or fungal diseases—all of these chemicals are designed to kill things, and they can make us very sick, and they make the water very sick, and the soil very sick, and the air very unhealthy.”Giving up chemicals doesn’t mean you have to pave over your front yard.“We will have lawns long after all these chemicals are banned in the United States, as they have been banned in Canada,” says Paul—explaining that more than 80 percent of Canadians cannot use weed and feed products, or glyphosate (the active ingredient in Roundup herbicide) because they are
Andrew, who is now assistant director of the Chicago Botanic Garden, is past president of Magnolia Society International’s board of directors, and remains a member of the society’s board. In his tenure over 20 years as curator at Scott Arboretum of Swarthmore College in Pennsylvania, Andrew built the magnolia collection from about 50 to more than 200 cultivars. That’s a lot of magnolias.Now Andrew Bunting is author of a book on the queen of flowering trees, called “The Plant Lover’s Guide to Magnolias,” just out from Timber Press as part of an ongoing series on various distinctive genera of plants.We talked magnolias on my public-radio show and podcast. Read along while you listen in to the April 25, 2016 edition of the podcast using the player below (or at this link)–and even learn how to train a magnolia or any w
In the fall of 2016, Dr. Connally won a $1.6 million grant from the Centers for Disease Control to fund a four-year study, in coordination with the University of Rhode Island, to gauge the effectiveness of various tick control methods in the areas around people’s homes. She’ll tell us more about the angles being pursued, and also about self-care topics, from treated clothing to the use of topical repellents and more.Read along as you listen to the Dec. 11, 2017 edition of my public-radio show and podcast using the player below. You can subscribe to all future editions on iTunes or Stitcher (and browse my archive of podcasts here).backyard tick research, with dr. neeta connallyQ. A little context first: You’re in the Northeast, where a lot of the cases of Lyme in the United States occur, but there are multiple tick species around the nation. You
Adam and I talked about not just the Japanese types, but also other garden-sized maples for adding interest in every season and garden situation–in pots or the high shade of woodland gardens, to full-sun locations.my maple q&a with adam wheelerQ. When I was at Broken Arrow recently, there were many choice things to look at—but I kept noticing the maples you offer, particularly. How many do you grow?A. In the collection at the nursery, I suspect we have 150 or 200 different maples, and really that’s the tip of the iceberg with this genus.Q. There are a lot of native A
On my public-radio show, Arboretum director Mark Weathington took me through the years-long process of “discovering” new plants. Plus, Mark highlighted some Arboretum specialties that may belong in your garden, including standout redbuds and mahonias, and the lesser-known evergreen shrub Illicium, and even showy native dogwoods selected to withstand increasingly saline soils in tricky coastal areas.What’s now called the J.C. Raulston Arboretum at North Carolina State University is where I met my first Cephalotaxus–a near-lookalike to our common evergreen yews but excitingly deer-resistant. And then a moment later I met another one–this time a columnar form–an