Museum Curators: Jack Sustic

Jack Sustic at NBF’s annual reception in 2018.

“It’s almost as if my life path was leading, from the very beginning, to become curator.”

— Jack Sustic

Sustic has just retired from his two-year stint as National Bonsai Foundation co-president and 19 years as a board member, leaving an extensive and inspiring legacy at the Museum – including 12 cumulative years as Museum curator. Therefore, it’s only fitting we pay homage to him in our next Museum Curators spotlight. 

His “path” to bonsai curator began indirectly during his youth. Sustic had heard references to bonsai in films like Karate Kid, but he first saw a real bonsai in the mid-1980s when he was serving in Korea as a U.S. Army soldier before college. He said the bonsai immediately captivated him, and upon returning to the U.S. at Fort McClellan, Alabama, Sustic joined the Alabama Bonsai Society.

The club jumpstarted his love for bonsai and plants in general, and Sustic soon graduated from Michigan State University with a degree in horticulture. He scored his first plant care job at the Riverbanks Zoo and Botanical Garden in South Carolina, during which he applied for the U.S. National Arboretum’s internship at the National Bonsai & Penjing Museum.

In 1996, Sustic served as the Museum intern for six months under Curators Bob Drechsler and Warren Hill. He returned to South Carolina after his internship wrapped up but was soon chosen for the Assistant Curator position, taking over as curator after Hill retired. Sustic served as curator from 2001 to 2005 and returned in 2008 to preside over the Museum for another eight years. 

“It was such an honor to be part of that collection, but with that honor comes responsibility,” Sustic said. 

Sustic and volunteer Dr. Joe Gutierrez repotting the Yamaki pine.

Accomplishments as Curator and Co-President

Sustic helped to establish many perennial programs and relationships at the Museum and NBF. He pioneered the formation of NBF’s National Bonsai Hall of Fame, which currently includes three members: John Naka, Yuji Yoshimura and Bill Valavanis.

“It was something I thought the Museum and the U.S. bonsai community needed in order to honor and recognize these bonsai masters’ valuable contributions to the art,” he said. 

Sustic is credited with planting the seeds to grow the Museum’s Sister Museum relationship with the Omiya Bonsai Art Museum after he visited their site in Saitama, Japan. Sustic also formed the Consortium of Public Bonsai Curators as a way for bonsai artists and leaders to share information about how they share, cultivate and protect their bonsai collections. 

“The consortium serves to help each other and each public collection. I’m very proud of that,” he said. 

From left to right: Former Curators Jim Hughes, Bob Drechsler, Jack Sustic and current Curator Michael James.

Sustic’s Bonsai Inspirations

Sustic met an array of friends and teachers throughout his nearly 20 years at the Museum. 

“Being curator has allowed me to get to know, work with and befriend people around the world who have been part of the Museum,” Sustic said. “The kindness that all these people share is wonderful.”

Among that company is Felix Laughlin, appointed as NBF’s third president as Sustic began his internship in 1996. Sustic eventually joined Laughlin as co-president from 2018 to 2020. 

“I was really lucky to have one NBF president the entire time I was at the Museum and really lucky it was Felix,” Sustic said. “He is such a wonderful guy, and we worked really well together.”

Sustic learned the art of bonsai from many people, but he most prominently drew inspiration and learned from bonsai master John Naka, who visited the Museum every year to work on trees, especially his world-renowned “Goshin.” Sustic also visited Naka in California to work on trees in Naka’s backyard. 

“Looking back now, I wish I had paid more attention,” he said. “It went by too fast, but those were wonderful experiences. I learned a lot from John, so his influence was huge on me.”

Sustic also learned from Harry Hirao and traveled to Saburo Kato’s bonsai nursery in Japan called Mansei En, during which he received one-on-one training from Kato. With their help, he excelled as a leader and friend throughout his years of dedication to the Museum. 

“I distinctly remember telling Bob Drechsler, ‘I don’t know how you can be curator. I could never do it,’” Sustic said. “Fortunately, over time I learned the ropes, and eventually I took it over. I considered it a real honor and privilege to have been the steward of those trees, and I still feel that way.”

Sustic adds the final touches on a trident maple prior to an official state visit by the Japanese Prime Minister in 2012.

Historical Tree Spotlight: Pasture Juniper

The Juniper as it stands in the National Bonsai & Penjing Museum today. Photo credit: Stephen Voss.

Bonsai are often developed from seedlings or collected from nature. But this month’s Historical Tree Spotlight features a tree with a unique cultivation story.

Jack Douthitt, a prominent Midwestern bonsai master, retrieved this juniper from a cow pasture in South/Central Wisconsin. But before collecting the tree, Douthitt spent time training the juniper in the pasture, preparing it to be dug up so the tree had time to heal and recover from Douthitt’s initial cuts. Museum Curator Michael James said digging up the tree first may have resulted in lost branches and would have prolonged the tree’s recovery.

“Trees in the ground are much more strong and vigorous – they heal quicker,” James said. “Once it’s in a pot, growth is much, much slower. Those preparations he made in the field allowed him to collect the juniper and get it on the fast track to being a bonsai.” 

Douthitt belonged to myriad local, national and international bonsai clubs, including Bonsai Clubs International, American Bonsai Society, Milwaukee Bonsai Society and Minnesota Bonsai Society. The National Bonsai Foundation recognized him in 1987 as “One of America’s Outstanding Bonsai Artists.” 

Douthitt previously studied art and architecture but deviated from that background after discovering the world of bonsai. 

“Once a painting is finished, I lose my emotional involvement with it,” he once said. “In bonsai, the creative process never stops, and the emotional involvement with it never ends.”

Douthitt’s juniper is native to the Midwest and resides in The National Bonsai & Penjing Museum’s North American Collection. The tree retains its small foliage throughout the year and forms both male and female cones as an adult tree. James added that some junipers naturally grow very low to the ground, crawling much wider than they do tall.

The juniper was repotted from its original rectangular pot to a more shallow, oval pot to better complement the tree’s figure. “That round shape of the pot really harmonizes with the trunk’s curves, whereas the old, rectangular edge just didn’t fit with those rounded trunks and branches,” James said.

While the tree technically falls under the evergreen category, James said the juniper’s branches cycle through a few different colors throughout the seasons. In the spring, the juniper sports lime green new buds that contrast against dark green older leaves, but the tree transforms into a deep green in the summer. 

According to James, the juniper turns almost bronze-like when the cold starts to drift in during autumn, and its leaves develop a purplish color when the tree enters a deep dormant state in the middle of winter.

Left: The bonsai in the 80s before it was donated.

Right: The juniper shortly after it was accepted into the North American Collection.

“It’s neat,” he said. “It’s a cute little tree.”

James added that the juniper tends to take well to pinching when new growths sprout in the spring. Once pinched, the tree forms a proliferation of buds and stays quite dense. 

The twisted deadwood that travels up the side of the tree embodies the Japanese concept of “shari.” Douthitt intentionally created the streak of deadwood and multiple jins, or dead branches, to mirror the harsh conditions – like lightning, sun, wind or animal disturbances – that would kill a strip of the bark in the juniper’s natural setting.

“Snowstorms or ice in the wintertime blow up against the side of a trunk, or an animal or something steps on a branch, which is going to rip and tear the bark away, naturally creating those sharis,” James said. “This one was probably done by the collector, but it could very easily have been found that way as well.”

Historical Tree Spotlight: Coast Redwood

The Chambers’ Christmas Card, 1980. The message inside the card reads: “Whether giant or bonsai, the roots of the redwood spread and intertwine to anchor the majestic evidence that God intended, similarly do the roots of Christmas support our faith that man, too, can stand tall. Have a very Merry Christmas, June and Bob Chambers.”

“All I want for Christmas is a bonsai tree” is probably what June Chambers was singing in 1949. She got her wish – and that gift prompted a long life devoted to learning about and caring for bonsai. Chambers developed a beautiful collection, and since then she’s been sending Christmas cards with a different bonsai on the front each year.

One particular Christmas card stands out: the one with a beautiful redwood, or Sequoia sempervirens, on the front. 

Peter Sugawara, a bonsai practitioner who owned Monte Bello Nursery in California, started training this coast redwood from a seedling in 1954. Chambers bought the tree from him in 1972, and Sugawara spent years visiting her yard to help her train the tree. Chambers donated the redwood to our Museum in 1990, and volunteers and curators have been caring for the tree in the North American Pavilion ever since.

“It’s interesting that Sequoia sempervirens is the tallest living thing in the world and the oldest one known of in the Redwood National Park is more than 1,000 years old,” National Bonsai & Pening Museum Curator Michael James said. “It’s likely that this is the smallest redwood that anyone will ever see.”

Caring for the coast redwood

James said the redwood produces shoots with two lateral rows of small needles that can be pinched to ensure the growth doesn’t elongate too much.

Trees in this species develop clustered, vegetative buds at the junction of branches throughout the growing season, he said. If left alone, the clusters will form a whorl, meaning more than two shoots grow from one location. But James said you can prevent that phenomenon from happening on a redwood if you regularly rub off additional buds with a finger or a pair of tweezers, allowing only two shoots or buds to remain at each branch division.

 “If those shoots and vegetative buds are not selected down to only two from every location, then bulbus accumulations of callous cells start to form, which leads to an undesirable inverse taper of the trunk or branches,” James said. 

Historical Tree Spotlight: The Museum’s First Tree

Nobusuke Kishi, former president of the Nippon Bonsai Association, hands the list of the 53 bonsai gifts to U.S. Ambassador James Hodgson at a ceremony in Tokyo, Japan. The tree on the left is the first Japanese black pine donated to the Museum.

The National Bonsai & Penjing Museum was created after the United States received a wonderful bicentennial gift of 53 bonsai from Japan in 1976. For this month’s historical tree spotlight, we wanted to highlight the first tree on the list of gifted bonsai: a black pine donated by Saichi Suzuki.

A symbolic facet to the Nippon Bonsai Association’s gift, the pine is believed to have been about 200 years old – the same age as the United States when the gift was given. While Japanese black pines can now be found growing all over the world, the species is native to Japan. 

Museum curator Michael James said the tree embodies “yamadori,” the practice of digging a tree from the wild and putting it into a container. Saichi Suzuki, the tree’s donor, collected and began training the pine in a bonsai pot in 1895. According to James,  the tree is estimated to have been about 125 years old when Suzuki removed it from Atsumi Peninsula in Aichi Prefecture in Japan.

Suzuki later founded Daiju-en, a very famous bonsai nursery in Japan (at which former Museum curator and current NBF board member Jack Sustic once studied). Daiju-en is famous for cultivating Japanese black pines, and Suzuki is often credited with being the first to discover the black pine decandling technique – a process completed in the summertime after a pine’s candle, or shoot tip, lengthens.  

Suzuki stumbled on that process by accident after witnessing a caterpillar eat the tips off a black pine. While usually thought to be a disaster, Suzuki saw that the insect’s munching actually produced a second growth of shoots with smaller needles than the first growth. This discovery was important because Japanese black pine needles tend to be fairly long for bonsai culture, at least compared to a white pine.

“We are always trying to reduce the size of leaves to make the trees look bigger,” James said. “That serendipitous caterpillar feast made him realize black pines can be decandled and put on a second flush of growth that is even smaller, more compact, better looking and proportional to a bonsai tree.”

James said Suzuki began experimenting with the decandling practice on his own and perfected the decandling technique that is now widespread in bonsai culture. 

“Decandling pines is critical for having well-maintained trees,” he said. 

Now in the Japanese Pavilion, the inaugural Japanese black pine is about 245 years old. Stop by our collection to see the tree that helped to launch our Museum. 

Historical Tree Spotlight: The Chinese Banyan

While many bonsai are often plucked from the ground after natural growth, some trees are specially created. For example, the Chinese banyan – or Ficus microcarpa ‘Kaneshiro’ – is the incredible cross-pollination work of the tree’s donor, Haruo “Papa” Kaneshiro. 

Museum Curator Michael James said Kaneshiro, who lived in Hawaii, is known as the father of tropical bonsai for his work with tropical trees long before they were considered for bonsai material by the mainstream. Kaneshiro was honored among other notable bonsai figures, like John Naka and Ted Tsukiyama at the International Bonsai Convention in Hawaii and was one of the first members to start the World Bonsai Friendship Federation. 

“One of the reasons Kaneshiro is credited with being the father, king or papa of tropical bonsai is because he was so willing to share the secrets of bonsai with the rest of the world,” James said.

No Ordinary Tree

The Chinese banyan is Kaneshiro’s unique cross between Ficus microcarpa ‘retusa’ and Ficus microcarpa ‘crassifolia.’ While figs on a ficus generally grow to the size you might see in a grocery store, the fruit on a Ficus microcarpa usually range from ⅛ inch to ¼ inch, James said. 

The flowers of Ficus microcarpa reside inside of the fruit and never open, so small wasps have to crawl inside of the fruit to pollinate the flowers. Kaneshiro’s process created the Ficus microcarpa ‘Kaneshiro’ bonsai that remains at the Museum today. 

Root Over (Lava) Rock

James said this Chinese banyan has been in training since 1975, but Kaneshiro planted the tree in the ground over a slab of lava rock in 1982. This unconventional planting method restricted the tree from growing directly into the ground – the roots had to hit the lava slab first and then grow around the rock.

“These ficus trees grow so quickly that if you put one straight in the ground in Hawaii it becomes a 100-foot tree in no time,” he said. 

By the time Kaneshiro pulled the banyan from the ground and potted it in 1987, the tree’s roots had wrapped around the lava rock so tight that the rock became part of the composition, James said.

“Now it’s a root over rock, or root over slab, as if it were growing on a volcanic hillside in Hawaii,” James said. “You can see the volcanic rock jutting out like a volcanic ledge.”

A Resting Place

The Chinese banyan came to The National Bonsai & Penjing Museum in 1990, finding a home in a pavilion named for its donor: The Haruo Kaneshiro Tropical Conservatory. Kaneshiro has also donated a black pine held in the North American Collection.

James said the banyan grows fast, all year round, meaning volunteers have to prune back the banyan’s shoots and leaves about once a week. 

“On a Japanese white pine, pruning might be done once a year, but banyans grow out of bonsai shape and their leaves become too large very quickly,” he said. 

As a tropical tree, the banyan thrives in warm climates like Florida, Southern China or Vietnam and boasts a soft wood, so it cannot freeze. 

HISTORICAL TREE SPOTLIGHT: A Buttonwood From The CIA

The National Bonsai & Penjing Museum has just declassified its latest tree: a buttonwood, or Conocarpus erectus.

Chelsea Robinson, a spokeswoman for the Central Intelligence Agency, alerted National Bonsai Foundation Executive Director Johann Klodzen that the CIA had obtained a bonsai tree and wasn’t quite sure what to do with it. The tree in the agency’s possession was the buttonwood, which is approximately 150 years old.

But how did such a historic tree end up in the hands of one of the nation’s top security departments?  

The buttonwood was first collected from the Florida Everglades about 30 years ago, changed owners multiple times and ended up in the hands of Bjorn Bjorholm, a bonsai professional. The United Arab Emirates (UAE) had asked Bjorholm to purchase trees for them to give as gifts to various recipients, including the buttonwood for the CIA. The UAE presented the tree to the CIA in August, in "recognition of our countries' strong and historic partnership."   

Dr. Richard Olsen, the U.S. National Arboretum's director, immediately accepted the buttonwood from the CIA on behalf of the Museum. Museum curator Michael James and gardener Erin Holden drove to the CIA under strict security to pick up the Museum’s newest addition. 

The buttonwood currently sits in the “growout” area, a place for trees that are not currently on display, until the tree recovers from its travels.

Museum curator Michael James said volunteers placed the tree into partial shade to help the tree adjust from living in a dark office at the CIA for nearly two weeks. James said they regularly watered the buttonwood for about a week and evaluated how quickly the soil dried before the next watering. 

“At that point the foliage condition was good, so we moved the tree into full sun and fertilized it,” he said. “Now the buttonwood is pushing out new growth, but not uniformly over the entire foliage canopy.”

James said volunteers are taking note of the tree’s weak and strong areas and cut off longer shoots to redirect energy to weaker branches. 

“When the strength of the growth is balanced over the canopy, the tree will be wired to shape the canopy in a way that is complementary to the twisted trunk that has lived through a hurricane or two,” he said. 

Gina Haspel, the director of the CIA, sent a letter thanking the Museum for ensuring the tree remained healthy and cared for before its transfer to the Museum.

“While the CIA has many talented officers, we are not skilled in the art of bonsai maintenance, and so we are incredibly grateful that the tree will be preserved in the Museum’s celebrated collection and that it is in such expert hands,” Haspel said.

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Read more about this unique acquisition of this tree in this article by Washington Post columnist, John Kelly.

HISTORICAL TREE SPOTLIGHT: Bald Cypress

From the cliffs of San Diego to the Gulf Coast, cypress trees can be found throughout the United States. But how did this bald cypress, or Taxodium distichum, end up in a bonsai museum? 

The late Vaughn Banting, a former National Bonsai Foundation board member, a former director of the American Bonsai Society and a former director and vice president of Bonsai Clubs International, donated the tree to the Museum in 2000. 

Banting was no stranger to plant care and garden design. His history with trees dates back to his childhood when he worked on bonsai at his family's plant nursery in New Orleans. A veteran of the Vietnam War, he studied horticulture and landscape architecture at Louisiana State University. After returning home he started a horticultural service company and founded the Greater New Orleans Bonsai Society. 

Banting’s cypress tree began as nursery stock, which is a plant that has been cultivated from a seedling or cutting and grown in a container, according to Museum curator Michael James. The stock is then planted into the landscape to grow into a full-sized tree or shrub. This particular cypress was instead destined to become a bonsai and has been in training in a pot since 1972. 

The cypress in 1976 in its first form, the formal upright.

The bald cypress, a deciduous conifer native to the Southeast United States, is often found in swamps where its roots can be fully submerged in water. One would be hard-pressed to find this particular species of cypress growing in Japan or China, because the tree would have to travel to those countries by boat or plane, James said. 

When Vaughn Banting first began training this tree, he aimed for a traditional Japanese formal-upright formation, which is the natural growth habit of young bald cypresses. But he later realized that old bald cypresses are different.

Museum curators and volunteers train the cypress in a flat-top configuration – the same style the tree sported when Banting first gifted the tree to the Museum. According to James, Banting observed the bald cypress’ unique growth habits as they matured at his parent’s nursery, which led him to create the flat-top style. 

Related Reading – Know Your Styles: A Guide to Bonsai Configurations

Banting realized that the flat-top style’s success relies on the positioning and thinning of the upper branches.

“As the trees become old and mature, they lose the triangular silhouette with a sharp apex and wide lower branch spread,” James said. “The lower branches break off over time, and that triangular silhouette of the formal upright style inverts itself. Upper branches then form a broad flat canopy with multiple apices and lower branches hold their foliage close to the trunk.” 

After nearly fifty years of training and three different training stages, Banting’s bald cypress is on display in the Museum’s North American pavilion. The flat-top configuration has become very popular, and the Museum is looking forward to the next innovative bonsai design to come our way.  

Takahiro Mori Performs Bonsai Demonstration at U.S. National Arboretum

Mori works on bonsai during demonstration.

Japanese bonsai master Takahiro Mori held a bonsai demonstration at the U.S. National Arboretum on July 20th.

In February, Yoshiko Higuchi of the Japanese Embassy wrote to Museum curator Michael James that Mori, a Japanese bonsai master who operates a nursery in Saitama, Japan, planned to visit D.C. in July. Higuchi and James then asked Mori to perform a couple of public and private demonstrations while he stayed in the District. 

At the public Museum demonstration, Mori held a talk about bonsai and performed a one-hour demonstration on a juniper collected on the Arboretum’s grounds five years ago. Museum staff members who have been caring for the tree since its collection will complete any remaining wiring and pruning the juniper needs.

The juniper collected on the Arboretum’s grounds five years ago that Mori worked on during the demonstration.

U.S. National Arboretum Hosts Receptions for American Public Gardens Association Conference

The American Public Gardens Association annual conference was held in Washington, D.C. from June 17th to the 21st. The U.S. National Arboretum hosted a dinner and five small receptions for APGA on June 20th.  

Before dinner in the Great Meadow, the Arboretum held receptions in five different locations on the grounds: The Washington Youth Garden, Friendship Garden, The Turf Grass Exhibit, The National Herb Garden and The National Bonsai & Penjing Museum.  

Photos Courtesy of Olivia Anderson Photography

The National Bonsai Foundation hosted the Museum’s reception, serving sushi and Japanese beer. Guests were able to enjoy the Museum’s renowned tree collections throughout the party. 

Photos Courtesy of Olivia Anderson Photography

During the reception, Museum curator Michael James and 2019 First Curator's Apprentice Andy Bello gave bonsai pruning demonstrations. Museum volunteer and artist Young Choe composed a kusamono (the Japanese botanical art of a potted arrangement of wild grasses and flowers). 

Landscape architect, Joseph James from Reed Hilderbrand fostered a discussion about upcoming renovations to the Museum complex and presented a display of preliminary renovation plans. 

Photo Courtesy of Olivia Anderson Photography

Authors Sandra Moore, Stephen Voss and Ann McClellan also staffed a bookstand that held books they have written about the Museum. The National Bonsai Foundation and U.S. National Arboretum are grateful to all who attended and helped make the event a big success!

HISTORICAL TREE SPOTLIGHT: “Spring Rain” Stone Penjing

When thinking of bonsai or penjing, one naturally imagines perfectly manicured trees. But in this month’s Historical Tree Spotlight, we’re shifting gears and taking a look instead at a unique stone presentation called “Spring Rain.” Museum curator Michael James says the rocky display exemplifies a fundamental difference between bonsai and penjing.

“Penjing, in the literal translation, is more of a theme or a landscape in a shallow container, whereas bonsai is really the minimalist, iconic tree we all know,” he said.

A gift from the Shanghai Botanical Garden to the Museum in 2006, “Spring Rain” is usually on display during the summer months in the Chinese Pavilion.

The penjing sits in a nearly five-foot tray crafted from white marble – a prolific resource used often in Southern China – which is meant to portray the surrounding sea. Its jutting landscape is a representation of a UNESCO World Heritage Site composed of a group of land masses protruding from Halong Bay in the South China sea.

Although “Spring Rain” represents a physical place on Earth, James said penjing are not always crafted to resemble real locations. The displays are often created as a poetic representation of an imaginary world or whimsical place.  

“With some of the other penjing we have in the Museum, the trees are so curvy they don’t even look the way trees naturally grow,” he said. “But they do look like an amazing place to be if you were miniaturized in that setting.”

According to James, the small boats under the main rock signify another capital difference between bonsai and penjing. The tiny pewter or ceramic figurines are accents used in penjing to create a humanistic scale. James said the presence of greenery is minimal in penjing, and the lack of plants in “Spring Rain” speaks to the minimalistic approach of the art.

He added that penjing artists use a freeform “clip-and-grow” method, rather than training the trees with wire, to redirect the trees’ energy into the desired form.

“With penjing, artists and creators allow the tree to do more of what it does naturally,” James said.