By Stephen Voss

Stephen Voss is an accomplished professional photographer and member of the National Bonsai Foundation’s board of directors. His photographs are held in the permanent collections of the Library of Congress and the DC Commission on the Arts and Humanities.

For many years, Stephen has honored an annual fall tradition of visiting the National Bonsai & Penjing Museum at the U.S. National Arboretum. He strolls the serene grounds, taking remarkable photos of trees in transition. Below, he shares reflections from his most recent visit in November 2024.

Each fall season at the National Bonsai & Penjing Museum feels like an opportunity to learn something new about the colorful transition of vibrancy and change.

A wonderful Washington Post article outlined the life cycle of a leaf, and I was amazed to learn that as the leaves lose the chlorophyll that makes them green, they reveal their actual colors. That means that the fall colors we're now seeing have been there all along — waiting for this moment to set the museum alight.

The museum is never a static place, and on every visit I find a fascinating new discovery.

This time, I notice a sizable quince fruit hanging off a tree, and a beautiful selection of Chrysanthemums in the Vaughn Banting courtyard, outside of the exhibit space.

A profusion of tiny pollinators swirl around the garden mums along the Kato Family Stroll Garden, as small piles of leaves gather in the nooks and crannies of this peaceful place. The lack of rainfall this season has made for somewhat muted colors; there are more browns than oranges and reds, and we’ve had unusually warm days that maybe aren’t so unusual anymore.

For a long time, I came to the museum and went straight to the bonsai, drawn to their magnificence at the expense of the surrounding gardens. My photos for many years were close-up images, guided by minimalist tendencies. I still lean in that direction; but now, I’m also so taken by the interplay of the trees within the larger space, and how I might interpret these interactions visually. The whole of the museum contributes to the experience of visiting the trees.

Visitors pass through the exhibit space, murmuring questions about the trees and taking in their structural forms that are slowly revealed by the shedding of leaves. It occurs to me that not a day goes by at the National Bonsai & Penjing Museum when someone visits who has never been there before.

As the seasons change, the Museum changes too — revealing another unique chapter in the story of this special place and these incredible trees.

Click any of the images below to enlarge it. You can scroll through the gallery using the arrow keys or by clicking the left or right icons.

With words from Stephen Voss and Andy Bello
All photos courtesy of Stephen Voss

Screen Shot 2021-10-04 at 1.41.47 PM.png

The crisp crunch of leaves under our feet, the chill in the air and the return of pumpkin-flavored goodies are all telltale signs of fall. But one of the most gorgeous arboreal displays of a change in seasons can be found at the National Bonsai & Penjing Museum on the grounds of the U.S. National Arboretum.

As mid-October crowns, the colors that long dominated the spring and summer in Washington, D.C. appear in flux. The striking chlorophyll that defined the color palette of nature for so many months post-winter wanes, and brilliant yellows, oranges and reds emerge.

There is no better place to experience this exuberant burst of beauty and vibrance than among the trees at the first and finest public bonsai museum in the world.

As fall presses on, the dedication Museum staff and volunteers gave to the national collections throughout the growing season is rewarded with cool autumn breezes and show-stopping foliage. They will continue their best efforts on these premier trees to keep them healthy throughout the fall and prepare them for frosty temperatures come winter – many steps of which are necessary for any bonsai owner to observe around this time.

First comes the tertiary structural pruning of the Museum’s deciduous trees, like the much-beloved trident maples and other non-flowering species. This pruning process includes spotting twigs that have thickened in the outer canopy, detracting from the idyllic delicate and finely ramified structure.

The pruners will address areas where more than two twigs are growing from one location, known as a node. By reducing these areas to two twigs, they prevent unwanted swelling and promote a smooth transition of taper from the trunk to the tip of the twig.

Screen Shot 2021-10-04 at 1.41.54 PM.png

Then they distinguish areas where twigs have elongated too far and prune them back to scale with the design of the tree. This work may be completed after the leaves are done changing color, through late winter. If this type of pruning is done too early, it may stimulate new tender growth that will not harden-off before winter, resulting in damage. If the pruning is done after winter dormancy, sugars from the roots are transported to the emerging spring tips and that energy is cut off and wasted.

While pines, spruces and junipers don’t lose all their foliage, the Museum’s conifers also need some attention before the onset of winter dormancy. Pines and spruces are cleaned of old needles, and their designs can be refined with wiring. Weaker foliage on junipers can be removed, and adventitious growth can be eliminated from the crotches of branches.

Cleaning out old needles and growth allows more light to enter the canopy and stimulate interior buds, helping them more strongly develop. Cleaning trees this time of year can be tedious, especially on a large collection, but this intimate operation brings us closer to the trees and gives us an even better understanding of their health and growth habits.

This is also an important time to take advantage of the last warm months to ensure all winter preparation and some spring preparation is completed, and those techniques vary greatly. First and simplest: Museum staff and volunteers arrange the area where trees will be placed on the ground out of the cold drying winds. Raised beds are constructed to heel trees into mulch to protect the delicate root systems, and cold frames are built and prepared to provide protection from wind and frost damage.

But in between these imperative steps for arboreal care, the trees provide perfect opportunities to engage in mindfulness. Whether you have a bonsai collection of your own or can set aside time to visit the National Bonsai & Penjing Museum, it’s the perfect time to walk through nature to interpret its splendor displayed in the captivating colors of fall.

Photographing Bonsai with Stephen Voss: Trees in Transition

Embrace Fall at the National Bonsai & Penjing Museum