Crawl Into Fall With Bug Fest at Lewinsville Historic House – now on October 22nd

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Photo: FMN Kate Luisa

Saturday, Oct. 22, 2022 (rain date due to Hurricane Ian)
10:00AM – 2:00PM

Lewinsville Park
1659 Chain Bridge Road
McLean, Virginia 22101

Click here for registration details.

Lewinsville Park is featuring Bug Fest on Saturday, Oct. 1, 2022 from 10 a.m. until 2 p.m. Come celebrate all things bugs with a creepy-crawly adventure! This event is fun for the whole family Play games and activities including insect safaris, explore live insects, inspect insect collections, log rolling, soil stations, bug walks, critter talks, bug experiments, and make your own bug. Use technology to explore the world of insects. Children must be accompanied by a registered adult.

 

Kite Flyers Reminded of Dangers of String, Filament Left Behind

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Photo: FCPA, Susan Laume

Article from the Fairfax County Park Authority, Park News September 7, 2022

Flying a kite seems simple, but there are strings attached to this fun activity. If you fly a kite and leave behind kite string filament, you may be responsible for injuring or trapping wildlife. You may also impede park maintenance and damage equipment, and you may even potentially injure people who get tangled in kite string.

This summer, there have been groups and individuals flying kites above Laurel Hill Park, the Central Green and Laurel Hill Golf Club. Generally, kite flying is a welcomed activity and fairly benign; however, over the past few months, several incidents have occurred that cause concern.

Kite string filament is being found in trees and on the ground. Park patrons, wildlife managers and Park Authority staff are regularly documenting harm to birds, reptiles and other wildlife caught in kite line. FCPA site maintenance expenditures are rising due to kite string being wrapped up in mowers and other site-specific vehicles. Animal Control has been called on occasion to free animals trapped by the line and tend to their injuries. Even people can be at risk of injury while pulling the string out of trees or running into kite filament dangling from trees.

So how can you assist in solving this problem? The Fairfax County Park Authority is in the process of developing signage to communicate kite-flying rules and safety information, providing more trash cans in the area, and trying to contact any groups or individuals who may be flying kites at Laurel Hill Park.

Signage will remind groups or individuals flying kites that they cannot undertake this activity in any park if it is going to cause littering or damage to county property. Those with kites need to fly them in open areas only. They should fly them no closer than 75 feet to trees, power lines, light poles, parking, people or facilities. The use of monofilament line for kite string is prohibited. And, they must dispose of all kites or kite string if not taking it with them when they leave the park.

Once signs are in place, those witnessing violations of the kite-flying rules will be asked to contact police at the non-emergency number 703-691-2131.

For more information, call the Park Authority Public Information Office at 703-324-8662.

Community Entranceway Landscaping

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Article, Photos, and Images: Courtesy of Plant NOVA Natives: Water’s Edge at Fair Lakes Homeowners Association 

The Audubon-at-Home program in partnership with Plant NOVA Natives obtained a grant from Dominion Energy to award seven matching mini-grants to community associations for converting their entranceway landscaping to all Virginia native plants. The mini-grants stipulated that the landscaping be designed so that the community’s standard landscape company could maintain it. The projects were installed in the fall of 2021. The “after” photos are from Spring 2022. Below, the organizer from Water’s Edge at Fair Lakes Homeowners Association shared some thoughts about their experience that may help other communities.

​Note: Any community or individual in Northern Virginia who wish to use their property for wildlife sanctuary is encouraged to invite an Audubon-at-Home volunteer to walk their property with them and strategize.

In Fairfax County, The Water’s Edge at Fair Lakes Homeowners Association participated in the program.

From the Water’s Edge Organizers:

It is so exciting to see these plants come back this year! We have several signs that you will notice in the pics. Besides the Native Plants sign, there are some smaller signs as well. The smaller green one requests that the plants not be sprayed. There are also small signs with numbers. The numbers correlate to the educational piece, which is the QR codes in multiple places, which invite people to learn more about the plant that is there. This is something we said we would have by this spring. We are still looking into other educational opportunities for the community and will take any chance to share the work that has been done and the benefits associated with planting natives. Since the entrance is located on a walking path in the area, the QR codes are placed so that anyone walking by has the opportunity to learn more about any of the plants. On our part, having this done and engaging with the work has prompted us to consider only natives in other parts of the neighborhood as trees need to be replaced, beds need to be rebuilt, and our own properties need plantings. The invasives that were in the area, such as the lilies, have been difficult to remove, and they came back in full force this year. Hands Dirty came back to remove more of them, and we will continue to monitor the need for removal. During bouts of hot and/or dry weather, we are watering by hand or hiring the landscaping company to water the plants at the entrance as well as other native plantings we are working to establish.

Additional articles about this program and participants:
Welcoming Visitors with Native Plant Landscaping — Audubon Society of Northern Virginia (audubonva.org)
https://www.plantnovanatives.org/entranceway-landscaping

Plant List:
​
Switchgrass (Panicum virgatam ‘Shenandoah’
Southern Wax Myrtle (Morella cerifera)
Butterfly Weed (Asclepias tuberosa)
Eastern Bluestar (Amsonia tabernaemontana)
Pennsylvania Sedge) (Carex pensylvanica)
Wood Aster
Woodland Phlox (Phlox diviracata) ‘Sherwood Purple’
Native azalea
Meadow Anemone
American Strawberrybush (Euonymyous americanus)
Aromatic Sumac (Rhus aromatica)
Moss Phlox (Phlox subulata) ‘Emerald Pink’
Beardtongue (Penstemon digitalis)
Black-eyed Susan
Culver’s Root
False Blue Indigo (Baptisia australis)
Golden Ragwort (Packera aurea)
Mountain Mint
Beebalm
Sundrops

 

Before Picture and After Pictures:

Courtesy of Plant NOVA Natives: Water’s Edge at Fair Lakes Homeowners Association

 

Courtesy of Plant NOVA Natives: Water’s Edge at Fair Lakes Homeowners Association

 

Courtesy of Plant NOVA Natives: Water’s Edge at Fair Lakes Homeowners Association

 

Courtesy of Plant NOVA Natives: Water’s Edge at Fair Lakes Homeowners Association

 

A Very Berry Universe

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Feature photo: Wild strawberries along the Turquoise Trail in Reston, Virginia. Methyl and ethyl butanoate and methyl and ethyl hexanoate make up the bulk of the esters produced by fresh strawberries. In addition to these esters, other volatile compounds are present in specific cultivars that gave them characteristic flavors.

Article and photos by FMN Stephen Tzikas

The next time you consume some blueberries, blackberries, strawberries, or raspberries and think that their delicious taste is just “out of this world” you may be right.

There is one item in nature that I think future master naturalists, perhaps a few hundred years from now, will recognize anywhere in the universe if they could travel to habitable worlds other than Earth. That item is fruit. While there may be countless numbers of chemical compounds, there is a much more finite number of functional groups. Nature is primarily organic chemistry, though that is not to say inorganic and mineral chemistry are not important, though their classifications are different. Organic functional groups are specific groupings of atoms within molecules that have their own characteristic properties, regardless of the other atoms present in a molecule. Common examples are alcohols, amines, carboxylic acids, ketones, and ethers. In a typical organic chemistry course, there’s about a dozen or two functional groups that are important.

Esters are one of these groups and they are ubiquitous. Esters are derived from carboxylic acids. A carboxylic

MolView’s display of Ethyl Formate, a.k.a. raspberry

acid contains the -COOH group, and in an ester the hydrogen in this group is replaced by a hydrocarbon group of some kind. Esters with low molecular weight are commonly used as fragrances and are found in essential oils. Esters are one of the more useful functional groups, in part because of their low reactivity. In nature, esters are responsible for the aroma of many flowers and fruits.

Some common esters that are present in various fruits include:

  • Raspberry: isobutyl formate & ethyl formate
  • Pear: isobutyl acetate, propyl ethanoate & propyl acetate
  • Apple: pentyl acetate & ethyl pentanoate
  • Apricot: ethyl heptanoate
  • Pineapple: ethyl hexanoate & allyl hexanoate
  • Banana: ethyl butanoate
  • Peach: benzyl acetate

“Water, water everywhere, nor any drop to drink” was a saying coined by poet Samuel Taylor Coleridge in his famous The Rime of the Ancient Mariner. Similarly, one can substitute “esters” for “water” in the famous phrase and one might now be speaking of the Universe. Because life in the universe is very likely to be organic based, it would not be surprising to find fruits on another world with the tastes and smells of Earth fruits, even though they may have a different appearance. Nature loves simplicity, and esters are just that. The simplest ester, methyl formate is relatively abundant in star-forming regions. Ethyl formate has been detected too in space. However, as organic molecules get larger they are more challenging to detect within the interstellar medium. Given that ethyl formate has the taste and smell of raspberries, one might conclude it’s a very berry universe. In fact, when it was first detected in our galaxy, the media posted stories humorously proclaiming the galaxy tastes of raspberries.

There is a lot of chemistry in nature, and many people make a hobby of it. A young child might explore with a chemistry kit, but the creative master naturalist enthusiast could get it involved in the extraction of dyes, oils, and fragrances found from plants in nature, to include the extraction of esters. Those who do this, extract wealth first-hand. I have heard it said in the chemical engineering industry that all wealth is either mined or grown, and everything else is an industry derived from this. If you enjoy exploring chemistry, many online resources exist as well as physical molecule building kits. MolView is an intuitive, open-source web-application for science and learning that can help you visualize molecules. It can be found here: https://molview.org

Chemistry is called the central science. Next time you are walking through nature, think about all the chemistry that is involved for anything that has a taste, smell, or color.

Spotted Lanternfly Watch Underway in Fairfax County

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Photo: Spotted Lanternfly, Stephen Ausmus, USDA

FAIRFAX COUNTY, Va – While there are still no sightings of the spotted lanternfly in Fairfax County, it is getting closer, and experts are on the lookout for it. This summer the invasive pest was found in nearby Loudoun County. To reduce the spread of this destructive insect the Virginia Department of Agriculture and Consumer Service has expanded the spotted lanternfly quarantine to include an additional 18 counties and cities.

Fairfax County Forest Pest Management also is asking County residents to help slow the spread of this invasive pest by being vigilant about not moving spotted lanternfly life stages when traveling through known infested areas. The spotted lanternfly is known as a ‘hitchiker’ since it is often found near railroads and inside shipments of items such as produce.

The insect feasts on more than 70 plant species, though its preferred host is the tree-of-heaven. In the Commonwealth the peach, apple, grape, and wine industries are most threatened.

Adults begin laying eggs in September and through the first few hard frosts. The egg masses are covered in a light gray colored wax that looks like mud when it dries.

Spotted lanternfly identification information with links to the quarantine area can be found on the Fairfax County web site Spotted Lanternfly. Please keep an eye out for spotted lanternfly in Fairfax County and report sightings to [email protected] or to 703-324-5304. The popular mobile app, iNaturalist, is an effective and efficient method for reporting a SLF sighting.

Be Nice to Your Trees

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Article and photo by Plant NOVA Trees
On a recent day, driving out of the sun into a wooded community resulted in a temperature drop from 91 to 86 degrees. We all try to stay in the shade in hot weather, competing for the parking spaces under trees. What we may not realize is that tree-lined neighborhoods are cooler not just because of the shade but because the trees themselves act as air conditioners. The basic concept is that it takes energy to turn a liquid into a gas – we see that when boiling water. When a tree sucks up water through its roots and releases it as a gas through its leaves, a process known as transpiration, the energy that causes the water to evaporate is absorbed from the surroundings in the form of heat, and the result is a lower air temperature. This principle of physics also explains why sweating cools our bodies.
Newly planted trees are particularly vulnerable to high heat, so the most basic care needed from us is to provide enough water until they are well established. Seedlings establish quickly, but a landscaper-sized tree needs several years for its root to grow out of the planting hole into the surrounding soil. Our torrential summer storms can fool us into thinking we are getting enough rain, but many of them are brief and don’t even budge the rain gauge. A young tree with brown leaves is a very sad sight. At the same time, overwatering any plant can be worse than underwatering, by depriving the roots of oxygen, so we need to be careful to follow instructions in that regard and allow the soil to dry out between waterings.
Once a native tree gets established, though, little if any care may be required for the next twenty years or so. Our oaks and other native trees evolved here and are accustomed to the local soils and our variable temperatures and rainfall, although those 91 degree days are adding to the stress of living in an urban or suburban environment. Because older trees may start to develop issues, it is wise to have those that are near houses inspected every two years by an independent consulting arborist, meaning one who has no financial incentive to sell tree care services. They can recommend procedures that may prevent a tree from becoming hazardous. Even better, they may be able to provide reassurance, for instance, that a tree that is leaning a little may be quite stable, despite the dire warnings of a marketing rep from a tree company that is eager to keep its crew busy. Always use the services of arborists certified by the ISA (International Society of Arboriculture.)
When future residents are facing temperatures even higher than today’s, a five degree lower temperature may make a life or death difference. Consider what hundred degree weather does to the human body when a prolonged blackout shuts down everyone’s air conditioning. It pays to take good care of our trees. Find out how on the Plant NOVA Trees website.

The Annual Virginia Geological Research Symposium

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Feature photo:  At the 2019 Virginia Geological Field Conference, our excursion group investigated the landslide damage of Hurricane Camille in Nelson County. After 50 years this mountainside is still stripped to its bedrock from the floods and landslides caused by the hurricane.

Article and photo by FMN Stephen Tzikas

The annual Virginia Geological Research Symposium is an event I enjoy attending. It is typically held in April and is approved for the FMN Better Impact continuing education requirement. It is presented at a professional level and is a conference from which one can acquire valuable knowledge if working in the associated engineering and science fields. Moreover, because it is Virginia centric and geology related, it’s a great learning venture for Virginia master naturalists.

The last couple of years the symposium was held virtually, but it normally meets in Charlottesville. It is free and hosted by Virginia Energy, Geology and Mineral Resources. This organization serves as Virginia’s geological survey. The last symposium was held on April 21, 2022. At this symposium, the U.S. Geological Survey gave a couple presentations related to the 2011 Mineral, Virginia 5.7 magnitude earthquake felt over a wide area including Fairfax County (something most of us will remember). The quake was further discussed in the context of the more recent 2020 Sparta, North Carolina 5.1 magnitude earthquake. Other presentations given by the U.S. Geological Survey included Earth MRI geophysical datasets along the fall-line in SE Virginia and NE North Carolina, and the origin of Carolina Bays in the Coastal Plain of Virginia.

The College of William and Mary had several presenters too. Topics included:

  • Age and origin of the Albemarle-Nelson mafic-ultramafic complex in the eastern Blue Ridge.
  • Structural geology and geochronology of the Shores Melange in the Piedmont.
  • Geology of the Schuyler 7.5-minute quadrangle in central Virginia and understanding Iapetan rifting, sedimentation, and magmatism.
  • Petrology, structure, and geochronology of the Oakville metavolcanic sequence and the implications for the provenance of the Smith River Allochthon.

Of particular interest to me was the landslide hazard mapping in western Albemarle and Nelson Counties by Virginia Energy. I once attended a geologic field trip to Nelson County, the location hit hard by Hurricane Camille in 1969 through the devastating flooding and landslides caused by the hurricane. Another interesting topic was on geologic storage potential in Virginia, also by Virginia Energy.

James Madison University and Radford University students made presentations too.

It is worth exploring the Virginia Energy website at https://www.energy.virginia.gov/. The website features such links as “Ask a Geologist” and information on the geology and mineral resources of Virginia at https://www.energy.virginia.gov/geology/geologymineralresources.shtml.

This symposium is a wonderful resource among many available for geology enthusiasts in Fairfax County. Others include are:

  • The Northern Virginia Mineral Club: https://www.novamineralclub.org/
  • The Annual Gem, Mineral and Fossil Show at George Mason University
  • NVCC 1-day 1-credit excursions (Field Studies in Geology under GOL-135)
  • The Virginia Geological Field Conference (also with counterparts in PA, NJ, and NY)https://vgfc.blogs.wm.edu/

 

Free Trees for Communities

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Article and photo by Plant NOVA Natives

As community associations around Northern Virginia ramp up their native tree planting efforts, they are looking around to find ways to make it affordable. Burke Centre resident Craig Willett has solved that problem for his neighbors: all they have to do is fill out a simple form to get a free tree. A member of Burke Centre Conservancy’s volunteer Open Space Committee, Craig has organized a system both for private property and for common land. On private land, residents pick up seedlings from Craig’s house and plant them themselves. On common land, the Trustees of the various clusters put in a request, and Craig and his colleagues will install trees or shrubs either to replace ones that have died or to reforest open areas. You can see him pictured here with fellow volunteer Mike Hathaway, in red.

Trees grow slowly, and they also die slowly. Many neighborhoods around Northern Virginia have been losing their canopy coverage, bit by bit, so that once pleasantly shaded yards and streets where neighbors and children could gather are gradually becoming intolerable as our summer temperatures rise. Communities that wish to reverse this trend are most likely to succeed if they build a long-term routine for tree care and tree replacement into their master plans. Where there is no community association, residents will need to step forward to help each other make a plan.

Burke Centre Conservancy obtains its tree seedlings from Fairfax ReLeaf, a non-profit organization of volunteers who plant and preserve native trees on public and common lands in Northern Virginia. Individual landowners may also request seedlings from Fairfax ReLeaf.

Any community in Fairfax County that owns open space may also apply for free trees from the Fairfax Tree Preservation and Planting Fund. It is not necessary to be a 501(c)3 organization to apply as long as the open space is commonly owned. This is a solid funding source for organizations that want to plant either seedlings or larger trees. The application process looks a little intimidating at first glance because of the long list of requirements, but in fact the required steps are all ones that any organization would take anyway when planting trees.

Programs for obtaining free native trees are also available to communities in Arlington and Falls Church. And although not free, there are numerous ways to obtain native trees for a very low price. For example, the Virginia Department of Forestry sells tree and shrub seedlings for $2.00 apiece for orders of ten or more. Our local native plant garden centers all sell medium-sized trees in containers at reasonable prices. Those trees may look a little small when first planted, but they will rapidly catch up to trees that were planted when larger, since older trees suffer more transplant shock. Two wholesalers of larger trees offer their trees at wholesale cost to people who are organizing community plantings. Links to all these programs can be found on the Plant NOVA Trees website.

Since 2018, Burke Centre Conservancy has planted over 600 bare root seedlings, which is in keeping with the nature-centered philosophy of this community with its extensive network of trails through the woods. More details about their process can be found on this web page.

Fort Ward’s Maclura pomifera Tree

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Feature photo: The arranged fruits of the Osage Orange tree into a happy face caught my attention and consequently initiated my interest to write this article.

Article and photos by FMN Stephen Tzikas

Osage Orange has a tough “stomp-proof” fruit that will not be crushed with foot pressure. It is grapefruit sized, about 4 inches in diameter, with an outer surface that looks like “brains.”

In December 2021, while on a trail review for the Birdability website (https://www.birdability.org/), I came across a most unusual tree. I had traveled throughout the US and the World, and walked many trails in Fairfax County, but never have I seen this type of tree. It’s commonly called an Osage Orange tree, but also goes by many other names, including its scientific name Maclura pomifera. As I approached it, I saw grapefruit sized yellow fruits on the ground beneath it, with a pile of them arrange in a happy face configuration, as if beckoning me toward them. I looked at those fruits in greater detail, and I thought to myself that the exotic fruit looked like brains, because of the convoluted nature of it.

The bark of the tree has scaly ridges with irregular furrows.

I asked a passer-by if he knew what kind of tree it was. He told me it was a “Monkey Tree,” so that became the basis of my internet search. Indeed, the fruits are also known as “Monkey balls” and “Monkey brains.” The Osage Orange tree is originally native to parts of Texas and Oklahoma. Today the tree has spread to much of the United States and Canada. Male and female trees have different flowers. Only the female tree bears fruit, but it is not edible. The early settlers of America had many uses for this tree and a lot of information on the tree and it uses can be found on the internet. The bark pattern on the tree has a characteristic deeply furrowed, scaly nature. Its twigs have thorns.

Fort Ward is a pleasant place to have a walk, with many ADA amenities. It also has a small museum on its grounds.

The location of the Osage Orange tree is just beyond the historic gate. Notice the Corp of Engineer’s insignia logo (castle) on top of the gate.

 

 

 

North American Butterfly Association(NABA) Butterfly Count, July 23rd

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Image: Courtesy of The Clifton Institute

Saturday, July 23, 2022
9:00am – 3:00pm
Where: The Clifton Institute
6712 Blantyre Road, Warrenton, VA
Cost: Free
For more information and Registration click here.

Every year community scientists help count the butterflies in 15-mile-diameter circles all around the country and contribute their data to the North American Butterfly Association. This summer The Clifton Institute will host their 27th annual butterfly count and celebrate their 20th year contributing their data to NABA. Butterfly enthusiasts of all levels of experience are welcome! If you feel like you don’t know many butterflies, this is a great way to learn and it’s always helpful to have more eyes pointing out butterflies.