Coniogramme intermedia

Intermediate Bamboo Fern Pteridaceae

One of those ferns that manages to look far too elegant for something that is actually rather tough. Coniogramme intermedia forms a handsome clump of arching, pinnate fronds, each pinna marked with the characteristic pale green to yellowish veins that give the genus its common name, bamboo fern. The overall effect is almost architectural — particularly when the fresh fronds emerge in spring and gradually develop their mature, slightly glossy texture.

A widespread East Asian species, occurring in China, Japan, Korea and Taiwan, generally in moist woodland, forest margins and shaded, rocky habitats. It appreciates the usual fern luxuries — cool roots, humus-rich soil and reliable moisture — but once established is considerably more accommodating than its refined appearance might suggest. Best in light to open shade, where the patterned venation can be properly admired.

The nomenclature has been anything but straightforward: the species has historically been treated under Coniogramme intermedia and related combinations, and it has sometimes been confused in cultivation with other variable members of the genus. The name Coniogramme intermedia Hieron. is, however, a well-established name for this distinctive East Asian fern.

• Hardiness: H5, approximately –15 to –10°C
• Height: 60–100 cm
• Spread: 60–100 cm
• Foliage: Evergreen to semi-evergreen, depending on winter conditions
• Flowers: None — it is a fern, obviously!
• Range: China, Japan, Korea and Taiwan
• Position: Moist, humus-rich soil in shade or partial shade