Columnaris Buckthorn
Rhamnus frangula
RAM-nus FRANG-yoo-luh
Shrubs: Hedge/Screen
Zone
3: -40° to -30°
Min. Temp
Frost Tolerant: 24°
Appearance
Summer Foliage
Dark Green
Fall Foliage
Green
Blooming Time
Early Summer - Early Summer
Habit
Columnar
Height
10–20 ft
Spread
4–6 ft
Form
Catkin
Characteristics
Type
Cultivar
Safety
Toxic to Dogs/Cats
Growth Rate
Moderate
Tolerance/Resistance
Cold Hardy
Attracts
Attracts Birds
Uses/Placement
Hedge
Optimal Growing Conditions
Sun Exposure
Full Sun - Part Shade
Soil Texture
Adaptable
Soil Drainage
Adaptable
Soil Moisture
Dry to Average
Soil PH
Slightly Alkaline: 7.0-7.5
PH Tolerance
Prefers slightly alkaline soil
Soil Amendment(s)
Compost
Fertilizer
Light Feeder
Fertilizer Formula
Balanced Fertilizer
Fertilizer Timing
Early Spring
Micronutrients
Trace Minerals Beneficial
Care
Care Level
Low
Behavior and Propagation
Spreading
Moderate Spreader
Propagation Method
Wind Pollinated
Propagation Licensing
Open propagation permitted
Division Timing
Rarely Needs Division
