Category Archives: Gardens

Demonstration Gardens: Local Education and Inspiration

flowers

small mailbox garden with suitable plants

In the summer I like to visit demonstration gardens to see how well the plants and vegetables performed in this area. Demonstration gardens are a great way to learn what works in the Washington DC metro area and how to manage our local issues, such as deer and rabbits. Each county that has a Master Gardener program usually has at least one demonstration garden, managed by the volunteer Master Gardeners. These are open to the public and free. To find such a garden, call your local county Master Gardener program representative (your local extension agent). Some have several to showcase various environmental conditions and some use the garden as a place to teach or host workshops.

In Northern Virginia, the Master Gardeners of Northern Virginia (Arlington and Alexandria) now have nine demonstration gardens. The Prince William County Master Gardeners manage a very large Teaching Garden at St. Benedict Monastery, 9535 Linton Hall Road, Bristow. Within this property are mini gardens to illustrate certain conditions or issues, such as a deer resistant garden, shade garden, vegetable garden, and pollinator garden. The Loudoun County Master Gardeners uses Ida Lee Park on Ida Lee Park Drive, Leesburg, as a teaching garden.

Green Spring Gardens, managed by Fairfax County Park Authority, has several demonstration gardens. The Green Spring Master Gardeners take care of the Edible Garden and the Children’s Garden.

deer sign

examples of deer resistant plants

In Maryland, the Montgomery County Master Gardeners manage six demonstration gardens. The Prince Georges County Master Gardeners have demonstration gardens at their headquarters at 6707 Groveton Drive, Clinton.

In DC there is the Washington Youth Garden, a program of the Friends of the National Arboretum, with support from the U.S. National Arboretum.  This is located on the Arboretum grounds.

plant sign

unusual plants at demonstration gardens

Some plant societies such as the National Capital Dahlia Society have demonstration gardens specific to their plant of interest. Contact the society directly to see if they have one. The National Capital Dahlia Society has the Nordahl Exhibition Garden for displaying dahlias at the Agricultural History Park in Derwood, MD. Plant NoVA Natives has a list of demonstration gardens that feature native plants on their site.

If you know of any that I have not listed here, please let me know in the comments box.

Mosquito-Repelling Plant Myths

There is a common myth that planting lemongrass (Cymbopogon citratus) in the garden will prevent mosquitoes. Lemongrass is a stunning specimen plant and a fantastic culinary herb, but it will not repel those nasty pests. Although it is true that the foliage contains an essential oil which mosquitoes do not like, a person would have to cut open or bruise the foliage to release the oil and apply the oil all over the skin. Lemongrass has very sharp foliage and applying an oil directly on the skin could cause a reaction. Plus, you would have to cover every exposed inch, including the face, as mosquitoes can find an unprotected spot the size of a dime.

So don’t be fooled into purchasing lemongrass in order to have a pleasant, insect-free party on the patio. Likewise, don’t think that “mosquito” plant, a type of scented geranium (Pelargonium graveolens citrosa), peppermint (Mentha x piperita), lavender (Lavandula spp.), catnip (Nepeta cataria), citronella lemon balm (Melissa officinalis citronella), and lemon eucalyptus (Corymbia citriodora) will do the trick. All of these may have an essential oil in the foliage that mosquitoes find repellant, but the leaves would have to be crushed, wiped all over the body, and potentially cause a skin reaction.

It is best to spray with DEET or other EPA-approved repellants that have been formulated for use on bare skin. Another alternative is to wear permethrin treated clothing (but even then you would still have to apply something on body parts not covered by clothing). Here are more tips to control mosquitoes on your property.

Clara B. Plein Memorial Garden at River Farm

A section of the new garden.

The American Horticultural Society’s (AHS) River Farm in Alexandria, VA, has a new garden for the public to enjoy. The Clara B. Plein Memorial Garden showcases about 2,400 plants native to the region representing 30 species. Scott Plein, chairman of the AHS board, spearheaded the effort to create this garden in honor of his grandmother Clara.

“My first memories of being in the garden were at my grandparents’ home in DC,” said Scott.  “As a kid, I would spend summers there and sit with my grandmother in the backyard. I would tell her what I wanted to do with the landscape. She caught on that I had a great interest in her garden and in the landscape. The first lawn I cut was her lawn with a reel mower, which I still have. In the mid-1970s, she encouraged her friends to use my lawn mowing service. She bought my first new lawnmower. She was always there for me and supported me in my landscape business.”

Part of the new garden with the historic River Farm house (AHS headquarters) in the background.

Scott’s mowing business grew into KT Enterprises, Inc., a landscape development firm. In addition, Scott is principal of Equinox Investments, LLC, a real estate investment, development, and management firm.  As a Virginia native, he has been an AHS member for many years, but was just recently introduced to River Farm when the danger of losing the historic home and property became real in 2020 (situated on the Potomac River, River Farm is north of Mt. Vernon and was part of George Washington’s original tract of land). Scott was invited to be on the AHS board in 2021 and became chairman in 2022.

“I am very interested in the role horticulture plays in all of our lives which is why I am dedicated to helping AHS move forward,” explained Scott. “I also am an environment guy from the standpoint of seeing the need for balance between natural habitat and human habitat.”

As he got to know the historic property, he was inspired to create the Memorial Garden using native plants to attract and support pollinators. Another board member reached out to landscape architect Joan Honeyman of DC-based Jordan Honeyman Landscape Architecture, LLC, to see if she would be interested in designing the garden. Joan and Scott collaborated to create a design that incorporated the existing trees and as many Northern Virginia native plants as possible. Nothing of significance was on that particular tract of the property except the trees so the spaces between the trees were blank canvases.

“We made a concerted effort to design around the trees and not disturb the tree roots,” said Joan. “The area is segmented into a series of rooms that were based on the spaces left by the existing trees. We used predominantly Northern Virginia native plants and some native cultivars. We wanted to create a native plant habitat that attracted pollinators and that also had educational opportunities for visitors. We created mulched pathways for visitors to be able to see the plants and pollinators up close. We also plan to have signage, birdhouses, and places for visitors to sit.”

Another section of the new garden.

Because the soil and sun exposure varied, the actual plants varied but Joan purposely kept it simple. “The palette is limited. We did not want to have too many different varieties because it would have been harder to maintain but also it could have been deceiving to visitors who may think they can grow all of these plants. We used reliable native plants planted in great masses. Planting in mass makes it easier for pollinators to find and access the plants.”

What evolved were thematic pocket gardens: a woodland deciduous azalea and viburnum area; a transition or woods’ edge area; a meadow; shrubs and small trees that produce edible fruit; and a shade garden. “Something is blooming or has visual interest in each season,” explained Joan. “We also used basic design principles such as repetition so you may see the same plant to draw your eye along the edge of the garden and into the interior. Visitors may be inspired to try the same design principles and plants in their garden.” A list of the plants is on the AHS website.

In order to make Scott’s vision a reality, 15 local nurseries and landscape companies collaborated, donating plants, supplies, and labor. “We asked these companies if they could donate any of the plants on Joan’s list and they all donated something,” said Scott. The garden was planted in the fall of 2023; currently Ruppert Landscaping maintains the site. “Ruppert staff were great to work with,” said Joan. “Scott had the vision, and I was honored that he asked me to realize the memorial garden for him.”

On June 7, 2024, AHS held a private dedication ceremony. Scott gave a short speech and cut the ribbon while everyone toasted with the bubbly. Staff from the collaborating nurseries and landscape firms attended, as well as donors, dignitaries, River Farm friends, AHS board members and staff. It was a lovely summer evening, and I am sure Clara would have been proud to have been honored by a native plant garden on the Potomac River.

From left to right: Matt Zuccari (Ruppert), Sophia Ciallela (Ruppert), Cole Stoy (Ruppert), Scott Plein (White House Farm Foundation and American Horticultural Society), Joan Honeyman (Jordan Honeyman Landscape Architecture), Kris Alvarez (KT Enterprises), Matt Teese (South Riding Nurseries), and Matt Deivert (South Riding Nurseries)

All photos courtesy of the American Horticultural Society.

Visit Demonstration Gardens for Education and Inspiration

flowers

small mailbox garden with suitable plants

In the summer I like to visit demonstration gardens to see how well the plants and vegetables performed in this area. Demonstration gardens are a great way to learn what works in the Washington DC metro area and how to manage our local issues, such as deer and rabbits. Each county that has a Master Gardener program usually has at least one demonstration garden, managed by the volunteer Master Gardeners. These are open to the public and free. To find such a garden, call your local county Master Gardener program representative (your local extension agent). Some have several to showcase various environmental conditions and some use the garden as a place to teach or host workshops.

In Northern Virginia, the Master Gardeners of Northern Virginia (Arlington and Alexandria) now have eight demonstration gardens. They recently added Buddie Ford Nature Center Garden. The Prince William County Master Gardeners manage a very large Teaching Garden at St. Benedict Monastery, 9535 Linton Hall Road, Bristow. Within this property are mini gardens to illustrate certain conditions or issues, such as a deer resistant garden, shade garden, vegetable garden, and pollinator garden. The Loudoun County Master Gardeners uses Ida Lee Park on Ida Lee Park Drive, Leesburg, as a teaching garden.

deer sign

examples of deer resistant plants

In Maryland, the Montgomery County Master Gardeners manage six demonstration gardens. The Prince Georges County Master Gardeners have demonstration gardens at their headquarters at 6707 Groveton Drive, Clinton.

In DC there is the Washington Youth Garden, a program of the Friends of the National Arboretum, with support from the U.S. National Arboretum.  This is located on the Arboretum grounds.

plant sign

unusual plants at demonstration gardens

Some plant societies such as the National Capital Dahlia Society have demonstration gardens specific to their plant of interest. Contact the society directly to see if they have one. The National Capital Dahlia Society has the Nordahl Exhibition Garden for displaying dahlias at the Agricultural History Park in Derwood, MD. Plant NoVA Natives has a list of demonstration gardens that feature native plants on their site.

If you know of any that I have not listed here, please contact me and let me know.

This Summer Visit Public Gardens

Summer is the time for traveling, exploring, and spending time with family. Thinking of where to go? Consider public gardens and arboreta. Many of these are historic places as well, great for teaching your kids. On my website, pegplant.com, I list local public gardens as well as gardening books written specifically for the Washington DC metro area. Several of these books, copied and pasted below, are resources listing botanical, public, or historic gardens in eastern states. Check out these books from your local library and plan a day trip with the family. Enjoy your summer!

A Garden for All Seasons: Marjorie Merriweather Post’s Hillwood by Kate Markert and Erik Kvalsvik, Rizzoli Electa, 2020

All the Presidents’ Gardens: Madison’s Cabbages to Kennedy’s Roses: How the White House Grounds Have Grown with America by Marta McDowell, Timber Press, 2016

Gardens of Georgetown: Exploring Urban Treasures, text by Edith Nalle Schafer; photos by Jenny Gorman, Georgetown Garden Club, 2015

Maryland’s Public Gardens and Parks by Barbara Glickman, Schiffer Publishers, 2015

Capital Splendor: Parks and Gardens of Washington DC by Valerie Brown, Barbara Glickman Countryman Press, 2012

A Guide to Smithsonian Gardens by Carole Otteson, Smithsonian Books, 2011

Historic Virginia Gardens: Preservation Work of the Garden Club of Virginia by Margaret Page Bemiss, University of Virginia Press, 2009

Virginia’s Historic Homes and Gardens by Pat Blackley and Chuck Blackley, Voyageur Press, 2009

Garden Walks in the Southeast: Beautiful Gardens from Washington to the Gulf Coast by Marina Harrison, Lucy Rosenfeld, Rowman and Littlefield Publishers, 2006

Garden Walks in the Mid-Atlantic States: Beautiful Gardens from New York to Washington DC by Marina Harrison, Lucy Rosenfeld, Rowman and Littlefield Publishers, 2005

The American Horticultural Society Guide to American Public Gardens and Arboreta:  Gardens Across America, Volume 1, East of the Mississippi by Thomas S. Spencer and John J. Russell, Taylor Trade Publishing, 2005

A City of Gardens: Glorious Public Gardens In and Around the Nation’s Capital by Barbara Seeber, Capital Books, 2004

Barnes & Noble Complete Illustrated Guidebook to Washington, D.C.’s Public Parks and Gardens, published by Silver Lining Books, 2003

Complete Illustrated Guide to Washington DC’s Public Parks and Gardens by Richard Berenson, Silver Lining, 2003

Visit a Public Garden This Summer

Summer is the time for traveling, exploring, and spending time with family. Thinking of where to go? Consider public gardens and arboreta. Many of these are historic places as well, great for teaching your kids. On my website, pegplant.com, I list local public gardens as well as gardening books written specifically for the Washington DC metro area. Several of these books, copied and pasted below, are resources listing botanical, public, or historic gardens in east coast states. Check out these books from your local library and plan a day trip with the family. Enjoy your summer!

A Garden for All Seasons: Marjorie Merriweather Post’s Hillwood by Kate Markert and Erik Kvalsvik, Rizzoli Electa, 2020

All the Presidents’ Gardens: Madison’s Cabbages to Kennedy’s Roses: How the White House Grounds Have Grown with America by Marta McDowell, Timber Press, 2016

Gardens of Georgetown: Exploring Urban Treasures, text by Edith Nalle Schafer; photos by Jenny Gorman, Georgetown Garden Club, 2015

Maryland’s Public Gardens and Parks by Barbara Glickman, Schiffer Publishers, 2015

Capital Splendor: Parks and Gardens of Washington DC by Valerie Brown, Barbara Glickman Countryman Press, 2012

A Guide to Smithsonian Gardens by Carole Otteson, Smithsonian Books, 2011

Historic Virginia Gardens: Preservation Work of the Garden Club of Virginia by Margaret Page Bemiss, University of Virginia Press, 2009

Virginia’s Historic Homes and Gardens by Pat Blackley and Chuck Blackley, Voyageur Press, 2009

Garden Walks in the Southeast: Beautiful Gardens from Washington to the Gulf Coast by Marina Harrison, Lucy Rosenfeld, Rowman and Littlefield Publishers, 2006

Garden Walks in the Mid-Atlantic States: Beautiful Gardens from New York to Washington DC by Marina Harrison, Lucy Rosenfeld, Rowman and Littlefield Publishers, 2005

The American Horticultural Society Guide to American Public Gardens and Arboreta:  Gardens Across America, Volume 1, East of the Mississippi by Thomas S. Spencer and John J. Russell, Taylor Trade Publishing, 2005

A City of Gardens: Glorious Public Gardens In and Around the Nation’s Capital by Barbara Seeber, Capital Books, 2004

Barnes & Noble Complete Illustrated Guidebook to Washington, D.C.’s Public Parks and Gardens, published by Silver Lining Books, 2003

Complete Illustrated Guide to Washington DC’s Public Parks and Gardens by Richard Berenson, Silver Lining, 2003

Demonstration Gardens in the DMV

flowers

demonstration of a mailbox garden and suitable plants

As the summer peaks, I like to visit the local demonstration gardens to see how well the plants and vegetables performed in this area. Demonstration gardens are a great way to learn what works in the Washington DC metro area and how to manage our local issues, such as deer and rabbits. Each county that has a Master Gardener program usually has at least one demonstration garden, managed by the volunteer Master Gardeners. To find such a garden, call your local county Master Gardener program representative (your local extension agent). Some have several to showcase various environmental conditions and some use the garden as a place to teach or host workshops. Continue reading

Visit the Philadelphia Flower Show on Opening Day!

This year the theme for the annual Philadelphia Flower Show is Riviera Holiday. In the past I have written articles about the show and the local nurseries and private organizations that host chartered bus trips. Taking a luxury bus is a great way to attend, no need to worry about traffic and parking. This year, there is a new trip so you can attend the first day, Saturday, February 29 (the show runs until March 8).

Teri Speight, owner of garden website Cottage In the Court, has reserved a bus departing from the lower parking lot of the District Heights Municipal Building, District Heights, MD. The bus departs at 8:00 am and returns by 9:00 pm. A native Washingtonian, Teri is a garden blogger, garden visionary, and a great garden speaker. For more information, contact Teri directly. The reservations deadline is Tuesday, January 14, 2020. Call at (301) 785-7507 or e-mail at teri@cottageinthecourt.com.

Each year the Philadelphia Flower show has a different theme and this year Riviera Holiday is inspired by the world’s exotic Mediterranean gardens. What a great break this will be from our cold, dreary winter! According to the flower show’s website, “groves of citrus trees lead the way providing a lush dramatic promenade to the sunshine drenched landscape ahead. Breathe in fragrant waves of lavender inspired by the terraced gardens of Monaco. Drifts of purple and white spiked salvias, specimen succulents, and an intoxicating variety of scented geraniums, roses, rosemary, and sage create a stunning mosaic that is at once picturesque and charming.”

Who could resist?

Three Heat-Tolerant, Pollinator-Attracting, Deer-Resistant Perennials

We are having a hot, dry streak now which really separates the weak from the strong in the garden. Now is a good time to see which plant is tolerating this weather well in other people’s garden so you can copy for your own garden.

On one particularly hot day this past weekend I was downtown visiting the Smithsonian museums. I spent a lot time in the Pollinator Garden, next to the National Museum of Natural History. This is a 400 x 40 feet area on the east side of the museum at 9th Street between Constitution Avenue and the Mall. The Pollinator Garden is managed by Smithsonian Gardens staff and is a wonderful place to relax and watch the butterflies.

I noticed several plants that were tolerating the heat well, that is, they were in full sun and not covered in powdery mildew.  As expected, they were definitely attracting bees and butterflies. These seemed worthy of copying in my garden. When I got home I looked them up and learned that they are rabbit and deer resistant as well as being full sun, drought-tolerant perennials. This is not to say there weren’t other worthy notables in the Pollinator Garden but these are definitely plants to add to my collection next year!

Wild Petunia

Although this plant is called wild petunia (Ruellia numilis), it is not related to petunias. These plants have lavender blue flowers that bloom from summer to fall. They are low growing with a trailing habit, reaching about a foot tall. They can serve as a groundcover and be used as a spiller in a container.

Allium ‘Millenium’

‘Millenium’ is a member of the onion family (Allium) grown for its ornamental, purple globe flowers. The plants grow to 1 to 1 ½ feet tall, providing a strong vertical interest.  They are great in the garden and can be used in containers as thrillers. After the flowers fade and die, the globe structure becomes tan and remains for a while, which also provides interest.

Walker’s Low catmint (Nepeta) is a member of the mint family, so it has gray green aromatic foliage. In the summer, the plant has small, lavender blue flowers, but each stalk has so many that sometimes the plant seems covered in a purple haze. The plants are low growing, about a 1 to 2 feet tall, and used as a groundcover or small shrub.

Walker’s Low Catmint

Visiting Local Demonstration Gardens for Ideas and Help

As the summer peaks, I like to visit the local demonstration gardens to see how well the plants and vegetables performed in this area. Demonstration gardens are a great way to learn what works in the Washington DC metro area and how to manage our local issues, such as deer and rabbits. Each county that has a Master Gardener program usually has at least one demonstration garden, managed by the volunteer Master Gardeners. To find such a garden, call your local county Master Gardener program representative (your local extension agent). Some have several to showcase various environmental conditions and some use the garden as a place to teach or host workshops.

The Master Gardeners of Northern Virginia (Arlington and Alexandria) have seven demonstration gardens:

  • Glencarlyn Library Community Gardens, corner of S. Third and S. Kensington Streets, off Carlin Springs Road, Arlington
  • Teaching Garden at Fairlington Community Center
  • Master Gardener Tribute Bench and Garden at Fairlington Community Center
  • Organic Vegetable Garden, Potomac Overlook Regional Park, Marcy Road, Arlington
  • Rock Quarry Shade Garden, Bon Air Park on Wilson Boulevard and N. Lexington Street, Arlington
  • Simpson Park Gardens, E. Monroe Avenue at the end of Leslie Avenue, next to the YMCA in Alexandria
  • Sunny Garden, Bon Air Park, Arlington

The Prince William County Master Gardeners manage a very large “Teaching Garden” at St. Benedict Monastery, 9535 Linton Hall Road, Bristow, VA. Within this large garden are mini gardens to illustrate certain conditions or issues, such as a deer resistant garden, shade garden, vegetable garden, and pollinator garden.

The Loudoun County Master Gardeners uses Ida Lee Park on Ida Lee Park Drive, Leesburg, as a teaching garden.

The Montgomery County Master Gardeners have a demonstration garden at the Agriculture History Farm Park, 18410 Muncaster Road, Derwood, MD, and they manage the herb garden at the National Library of Medicine Herb Garden at the National Institutes of Health campus in Bethesda. Each year, for a temporary period they manage award winning gardens near the Old MacDonald Barn at the Montgomery County Agricultural Fair.

The Prince Georges County Master Gardeners have demonstration gardens at their headquarters at 6707 Groveton Drive, Clinton, MD.

The Urban Demonstration Garden, part of the Capital Area Food Bank at the DC warehouse, 4900 Puerto Rico Avenue NE Washington DC.

The Washington Youth Garden, a program of the Friends of the National Arboretum with support from the U.S. National Arboretum (on Arboretum grounds) in Washington DC.

In addition some plant societies such as the National Capital Dahlia Society have demonstration gardens specific to their plant of interest. Contact the society directly to see if they have one. The National Capital Dahlia Society has the Nordahl Exhibition Garden for displaying dahlias at the Agricultural History Park in Derwood, MD. The Plant NoVA Natives has a list of demonstration gardens that have native plants on their website.