Native Flower Gardening in Virginia — My “New” Philosophy

I’ve decided I’m going to have a new native garden philosophy!  I’m going to give up on weeding!  Or at least I’m not going to try to dig up wire grass anymore.  To dig it up requires using a spading fork and this basically destroys my garden.  Here’s a photo of where I dug up wire grass last fall:

Where Wire Grass Dug Up

Where Wire Grass Has Been Dug Up

It’s not worth it.

I know of more than one native flower garden in nearby City parks that has been abandoned because the gardener couldn’t control the wire grass.

I’ve found that wire grass is relatively unsuccessful in the vicinity of my tall flowers such as Monarda fistulosa, sweet Joe Pye Weed, goldenrod and green-headed coneflower.

My new philosophy is going to be to plant as many tall-ish flowers as close together as possible and ignore the wire grass.  I’d like to say I’m aiming for a Flower-rich Meadow but this is too euphemistic!  I’m going to have to say I’m aiming for a Flower-rich Mess and if the bees like it, then I like it.

In the interests of truth-in-advertising, here’s a photo of what my flower-rich mess looks like right now.  (Not exactly flower-rich right now but hopefully there will be a big transformation over the next few months.)

Current State of Flower-rich Mess

Current State of Flower-rich Mess

Signs of Spring in Virginia

Here are some pictures of early springtime in Virginia.

Serviceberry Coming into Bloom Photographed 04/03/15

Serviceberry Coming into Bloom Photographed 04/03/15

Monarda fistulosa Photographed 03/15/15

Monarda fistulosa Coming Up Photographed 03/24/15

Redbud Flower Buds Photographed 03/22/15

Redbud Flower Buds Photographed 03/22/15

Spicebush  in Bloom Photographed 03/28/15

Spicebush in Bloom Photographed 03/28/15

Dogwood Flowers Opening Up

Dogwood Flowers Opening Up Photographed 04/03/15

Native Honeysuckle Leafing Out Photographed 03/24/15

Native Honeysuckle Leafing Out Photographed 03/24/15

 

Book Review: A Sting in the Tale: My Adventures with Bumblebees by Dave Goulson

In the preface, the author (now a Professor of Biology at the University of Sussex) dates his interest in bumblebees to when he was 7 years old and moved with his family to a little village in Shropshire. The house had a garden area and was opposite open countryside. For unknown reasons he was fascinated by all living creatures. (His father wasn’t interested in flowers or bees — although he allowed his son to plant whatever would attract bees or butterflies — and his mother was a sports teacher with a dislike of “creepy crawlies.”) The only adult he remembers encouraging his interest was a primary school teacher who loved to take her students out looking for “bugs or beasts.” She showed them how to identify trees and how to catch beetles and was especially “keen on pond-dipping.” His parents did allow him to acquire all the nature books he wanted. He became an avid collector of both living creatures and preserved specimens.   A seminal moment in his life was when he received a catalog from Watkins and Doncaster, “suppliers of entomological equipment.” Not only was there a fascinating array of equipment available but he realized “there were lots of other people out there like me.”

As we move into the book, we learn that when the author was born in 1965 the short-haired bumblebee was still quite widespread in the UK but by 1984 when the author entered graduate school it was nearly extinct. The cause of this loss, and that of other bee species as well, can be assigned to changes in farming methods. One hundred years ago farming was not mechanized. Farmers depended on horses for power and horses eat clover, so most farmers grew clover which bees also love. Most farmers had hay meadows, and artificial fertilizers weren’t available. Wild flowers, particularly those with symbiotic root bacteria that could trap nitrogen from the air (e.g. clovers) flourished in the low-nutrient soils of the hay meadows. Crops were grown in rotation. There were no pesticides. Fast forward a few years and horses were replaced by the internal combustion engine. The booming oil industry made it possible to synthesize cheap nitrogen-based fertilizers. Crop rotation and clover leys were abandoned. When hay fields are fertilized, the grass grows much faster and flowers cannot compete. With the advent of World War II, the changes in farming were vastly accelerated as every effort was made to feed Great Britain’s population from its own agriculture.  DDT became readily available. Organophosphate chemicals (nerve gases) developed during the war became available to farmers after the war to combat insect pests. Food rationing in Great Britain ended in 1954 but farmers continued to receive financial incentives to increase production until the 1990’s. By then almost all the flower-rich habitats and 98% of lowland hay meadows in the UK had disappeared. By the late 1980s it was becoming obvious that most of the UK’s wildlife was in rapid decline and what was being done to the countryside might not be sustainable.   As stated by the author: “Farms need flowers to support the bees that pollinate our crops, and they need predatory beetles, wasps and flies to eat the pests that eat the crops.” So now schemes are being introduced to pay farmers for encouraging wildlife on their land. Farmers can get funding to re-sow the wild flower meadows and replant the hedges they were previously paid to remove. The author feels that the UK may have turned a corner but recovery is slow.

Luckily, in the late 1800’s some species of British bees were transplanted to New Zealand, which subsequently was much less impacted by World War II. The author describes how efforts are now underway to bring these bees back to their native land to help restore the UK’s bee populations now that their habitat is slowly being restored.

Much of this book is devoted to the author’s and his graduate students’ studies of bee biology and behavior and their efforts to restore bee populations in the UK. How do you figure out how far a given bee can fly in order to forage and get back home again?

Perhaps my favorite chapter in the book is the one about his purchase of an old farm site in France. Land in France was much less expensive than in Great Britain. To turn an abandoned piece of over-fertilized farmland into a flower-rich meadow, the excess fertility must be removed so that the wildflowers can once again compete with the grasses. The slowest but least expensive way to do this is to cut and remove the hay each year, thus resulting in a slow decline in fertility. Very slowly, over the last decade, his meadows have begun to fill with flowers.   As the flowers have returned, so have the bees and other pollinators. A good question is where do the flower seeds for this to occur come from? Some seeds are wind-dispersed. Some, such as cowslips, have survived along the edge of the track to the farm and slowly spread into the meadow, a few feet each year.

Among the fascinating pieces of information from this chapter — over the past 15 years, the author has gathered records as to which bumblebees feed on which flowers. It seems that some bee species get nearly all their pollen from legumes. The author sent pollen samples off for determination of their nutritional composition. It turns out that legume pollen is unusually rich in “essential amino acids” which animals cannot synthesize for themselves. Ancient hay meadows are full of clovers, trefoils, vetches, meddicks and melilots, able to outcompete grasses because of their symbiotic root bacteria which enable them to “fix” nitrogen from the air. In the words of the author, “since pollen is the only source of protein available to bees, it makes sense for them to selectively visit the flowers that provide the richest source.”

As mentioned  in the book, in 2006 Professor Goulson founded the Bumblebee Conservation Trust.   When this book went to press, there were over 8,000 paid-up members “creating flower-rich habitat all across Britain.” Since reading this book, I have “googled” the phrase “flower-rich meadows.” Virtually every link that comes up is out of the UK. It seems that the British are indeed taking the need for pollinator habitat seriously. Are we here in the U.S. doing anything similar?

The author has a sequel coming out in April called A Buzz in the Meadow: The Natural History of a French Farm. Amazon is supposed to get it to me precisely on April 22, 2015. I can’t wait.

Robin

Green-headed Coneflowers Continue to Work Their Magic

Although they are well past blooming and practically all petals have dropped, the green-headed coneflowers are still acting as a food source. Yesterday I tried to get a picture of a goldfinch in these flowers with my smart phone, but was unable to do it.  This morning I went armed with my “real” camera, and was able to get this picture with the lens zoomed to its  limit.

Goldfinch in Green-headed Coneflower

Goldfinch in Green-headed Coneflower

Now It’s Green-headed Coneflower Time in Virginia

At last (late July – early August) the green-headed coneflowers (GHCF) — Rudbeckia lacinata — are blooming.

By now (08/01/14) the spring bloom of the garden is almost totally gone. The boneset is blooming throughout and the GHCF are standing tall at the back.  (In another post I’ll discuss the current “weedy” state of the garden.)

The Garden as of 08/01/14

The Garden as of 08/01/14

Whereas the Monarda attracted large bees, the GHCF attacts tiny bees. Here’s a view of the GHCF closer up in late July.  Although there are a swarm of insects on the flowers, you can’t make them out in this photo.

Green-headed Coneflower Closer Up

Green-headed Coneflower Closer Up

In this REALLY close-up view, not quite in focus, you can see 3 little bees if you look carefully.

Close-up with 3 Tiny Bees

Close-up with 3 Tiny Bees

Finally, in this short video, you can see some bees buzzing around the flowers (you may need to watch it a couple of times to be sure to catch the bees — if you’ve ever had a visual field test this is a little bit like that):

 

A Gossamer Winged Beauty

Today I took a walk around my garden to see what I could photograph.  When I got to the goldenrod, I saw a butterfly.  Butterflies have been extremely scarce this summer so I immediately tried to get a picture of this one, though I didn’t know its identity.  When I looked at the photo on my computer, this is what I saw:

Olive Hairstreak on Goldenrod

Olive Hairstreak on Goldenrod

According to my Audubon Society Field Guide to North American Butterflies, this is an Olive Hairstreak in the category of “Gossamer Wings.”  It’s host plant is Eastern Red Cedar.  I am fortunate to have a couple of those trees in my yard. — Robin