Chimonobambusa quadrangularis “Square” – CBQ

Description

This popular bamboo is unique in several ways. Has culms whose opposite sides are flat, forming a rounded square! Culms are rough to the touch with large nodes, and grow in an upright form. Graceful dark green foliage is arranged in attractive tiers, creating a waterfall effect, or if topped, an umbrella-like shape.  Looks best in part shade where leaves grow dark green; leaves exposed to bright sun are more yellow. This plant prefers cool daytime and nighttime temperatures, needs plentiful water, and is extra sensitive to dry conditions – may drop leaves if watering is missed or in hot weather.  Can grow 25’ tall and 1½” in diameter. Hardy to 10 F and tolerant of salt air.

Chimonobambusa is a genus of East Asian bamboo. They are native to China, Japan, Vietnam, Myanmar, and the Himalayas.

• Origin: China
• Minimum Temperature: 15 F
• Size in climate of origin: 25’ tall, 1.5” diam
• Sun/Shade: Bright shade all day (to a half-day of  afternoon sun in cooler climates) (2-4)
• Recommended Uses: Screen, decorative specimen, good for narrow spaces
• Shooting Season: Spring

Care

• Ideal growing conditions: Afternoon shade or filtered sun all day, cool temperatures, high humidity, plentiful water, and good drainage.
• Acceptable growing conditions: Will grow in more sun, especially in cooler climates, but leaves tend to yellow.  Can be grown near the ocean with salt air.  Ok for narrow spaces.
• Special Care: Does not like constant heat of over 70 F. and prefers cooler nights. It is particularly sensitive to dry conditions and may drop its leaves if  watering is missed.
• Recommended polyethylene plastic root barrier in average soils: 24” x 40 mil

Size

• Size Locally in open ground: 15’ tall, 1” in diam
• Size locally in contained spaces: In an 18-24” wide space with long length, can grow 8-10 in height. In a 3’ wide space, may grow to 12’ tall.