When people talk about bamboo, they are likely to mention things like Japanese gardens, privacy hedges and giant grasses. But the term Fargesia doesn’t ordinarily come up right away in conversation. It’s the botanical name for a particular genus of bamboo, but it’s a good one to know about if you’re honing your expertise in bamboo. And it’s especially useful if you want to grow bamboo in a colder climate.
The genus Fargesia is one of about 100 genera in the bamboo subfamily, Bambusoideae. This genus belongs in the tribe of temperate, woody bamboos known as Arundinarieae, as distinguished from the other two tribes of tropical and herbaceous bamboos. Most varieties of Fargesia are native to China, and unlike the vast majority of temperate bamboos, Fargesias are non-invasive clumping species, rather than the more invasive running types. The genus Fargesia is of great importance to the Giant Pandas of central China, who eat nothing but bamboo. And it’s especially important to gardeners in cold climates who are looking for bamboos of the non-invasive variety.
This article is part of an ongoing series about different types and species of bamboo. To learn more about this fascinating and diverse collection of grasses, check out these other articles.
- Running bamboo
- Clumping bamboo
- Timber bamboo
- Native bamboos of North America: Arundinaria
- Herbaceous bamboo: Olyreae
The easiest and maybe the most practical way to categorize bamboo is to divide them into two groups, runners and clumpers. This is something of an oversimplification, but it’s a pretty good start. And it’s not all that different from the way that botanists classify bamboo.
In scientific terms, all bamboos belong to the grass family, Poaceae, and they have their own subfamily, Bambusoideae. Within this subfamily, botanists have created three different tribes. One tribe, Bambuseae, includes the tropical woody bamboos, the great majority of which have a clumping rhizome type. The temperate woody bamboos make up another tribe, Arundinarieae, which are primarily running varieties. And the third tribe is something of a botanical footnote, Olyreae, consisting of a few unusual, herbaceous (non-woody) bamboos, from the tropics and subtropics of South and Central America.
The genus Fargesia is one of those anomalies of the plant kingdom that reminds us that all of our botanical classifications are just manmade conveniences. In reality, the natural world is not nearly so cut and dry. For that reason, you’ll find that botanists still argue about where to classify different kinds of bamboo, or whether a certain bamboo is a distinct species or simply a cultivar of another species.
A few other exceptions to rule include the genera Borinda, Thamnocalamus and Himalayacalamus, cold-hardy clumpers from the Himalayan area. But not all botanists recognize Borinda and Thamnocalamus as distinct genera. Also, the genus Yushania is another outlier, sometimes considered a runner and sometimes a clumper.
Most specialists agree that Fargesia belongs to the Arundinarieae tribe of woody, temperate bamboos, and yet the Fargesias have a definitively clumping growth habit. This means that they have pachymorph or sympodial rhizomes, clustering closely together, and bending quickly upwards rather than extending outwards. And yet, unlike other clumpers, they can be cold hardy down to -10º or -20º F.
This makes Fargesia one of the only bamboo genus which is both clumping and temperate. The preponderance of clumping bamboos are subtropical, like Bambusa and Chusquea, or tropical, like Dendrocalamus and Guadua. The tropical bamboos are generally not cold hardy below about 30º F, making them difficult to grow anywhere in the contiguous U.S., except in parts of Florida and Southern California. Other clumpers are more subtropical and can be grown in more diverse climate zones, cold tolerant down to 10º or 20º F, depending on the species.
Some clumping varieties of bamboo actually spread faster than others. We refer to certain species as open clumpers, because they continue to spread, despite having pachymorph rhizomes. But Fargesias are not open clumpers. They spread slowly, and the mature plants typically reach a maximum diameter of about 15 or 20 feet.
Fargesia bamboos flower gregariously, or synchronously, meaning that all members of a given species will flower at the same time. Subsequently, the plants go to seed and then die. Large swaths of Fargesia cover areas of the Chinese province of Sichuan, providing essential sustenance for the Giant Pandas native to that region. And when these bamboos have bloomed in the the past, it has led to a critical food shortage and something of a crisis for the already threatened pandas.
* FUN FACT: The name Fargesia, unlike a lot of botanical terms, is not Latin for something like “foreign” or “farm fresh”. The genus actually takes its name from the French missionary and amateur botanist, Paul Guillaume Farges, who first identified it.
Species in the genus Fargesia
There are nearly 100 species of Fargesia in total, growing mainly in southern and central China, but also in the eastern Himalayas and Vietnam. However, only a handful of species have been naturalized outside of Asia. They are all idea for cooler climates and for gardeners looking for a more compact species of bamboo. Still, some disagreements persist in the classification, with genera like Borinda and Yushania.
F. dracocephala: “Dragon head bamboo” has thick culms growing to about 10 feet, with a thick, weeping leaf canopy that can provide a good privacy hedge. Not recommended for hot, humid climates, but cold hardy down to -10º F. A popular cultivar of this species is ‘Rufa’, not to be confused which F. rufa, a separate species listed below. A dwarf cultivar of this species is also available, only growing about 6 feet tall, sometimes listed as Yushania confusa.
F. gaolinensis: A recently discovered species from Gaolin County in the Yunnan Province of China. Many authors classify it as Borinda gaolinensis, another good example of the confusion endemic to bamboo taxonomy.
F. murielae: Commonly known as “umbrella bamboo”, many consider this to be among the most beautiful varieties for cultivation. New shoots have a light blue hue, turning dark green and yellow with age. Growing this bamboo in a shady area will help preserve the rich blue shade. Thin shoots will get about 12 feet tall, and it’s hardy down to -20º F.
F. nitida: “Blue fountain bamboo” earned its name from the dark purple, bluish culms and the thick, cascading canopy of foliage. Very similar in appearance to F. muriela, except for the coloration of the culms. One-inch poles can get to about 15 feet tall, and thrive in temperatures as low as -20º F.
F. rufa: A compact, thick and bushy variety, Rufa much prefers the cooler climates, and also does well in partial shade, protected from afternoon sun. This species is hardy down to -15º F. Thin culms grow to about 10 feet tall.
F. scabrida: Another colorful variety, with shoots that come in shades of orange, blue and purple, eventually turning deep green. Also known as the “Asian Wonder,” it grows well in sun or shade, and is hardy to -10º F. Mature plants get 10 or 15 feet tall, with culms less than an inch in diameter. Although it’s a clumper, it does have a more vigorous growth habit. Still, its coloration makes it a favorite among bamboo growers.
If you’d like to learn more about the many uses and varieties of bamboo, take a look at some of our most popular articles.
- Best bamboo varieties for your garden
- Preparing your bamboo for winter
- Bamboo anatomy: 9 parts of the bamboo plant
- Growing Bamboo: The complete how-to guide
- Bamboo shoots: Delicious and nutritious
- Bamboo Q & A: Ask the experts
FEATURED PHOTO: Fargesia nitida growing in the Münster Botanical Gardens in Germany (Wikipedia)