Coastal Sweetpepperbush (Clethra alnifolia)

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  Credit: Sten Porse | own work by Sten Porse | License: CC-BY-SA-2.5,2.0,1.0 CC-BY-SA-3.0-migrated GFDL
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  Credit: KENPEI | KENPEI's photo | License: CC-BY-SA-2.1-JP CC-BY-SA-3.0-migrated GFDL
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  Credit: KENPEI | KENPEI's photo | License: CC-BY-SA-2.1-JP CC-BY-SA-3.0-migrated GFDL
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  Credit: User:BotBln | Source Missing | License: CC-BY-SA-3.0-migrated GFDL
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  Credit: User:BotBln | Source Missing | License: CC-BY-SA-3.0-migrated GFDL
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  Credit: Photo by and (c)2007 Derek Ramsey (Ram-Man) | Own Picture. | License: GFDL-1.2
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  Credit: Photo (c)2007 Derek Ramsey (Ram-Man) | Own Picture. | License: GFDL-1.2
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  Credit: Photo by and (c)2007 Derek Ramsey (Ram-Man) | Own Picture. | License: GFDL-1.2

Clethra Alnifolia, or more commonly know as Coastal Sweetpepperbush, is a shrub with green foliage and white flowers of the genus Clethra. It has a moderate growth rate and a height of 16 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring and summer, blooms during summer and is somewhat tolerant of shade. Clethra Alnifolia or Coastal Sweetpepperbush's floral region is North America US Lower 48

• Category: Dicot
• Genus: Clethra
• Family: Clethraceae
• Order: Ericales
• Class: Magnoliopsida
• Division: Magnoliophyta
• Duration: Perennial
• Growth Habit: Shrub
• Native Status: L48 (N) CAN (N)
• State T/E Status: ME (SC) TN (T)
• State T/E Common Name: ME (sweet pepper-bush) TN (coastal sweet pepper-bush)
• National Wetland Indicator Status: FAC+ FACW
• Regional Wetland Indicator Status: 1(FAC+) 2(FACW) 6(FACW)
• Active Growth Period: Spring and Summer
• Allelopath: No
• C:N Ratio: High
• Coppice Potential: No
• Fall Conspicuous: No
• Fire Resistance: No
• Flower Color: White
• Flower Conspicuous: No
• Foliage Color: Green
• Foliage Porosity Summer: Moderate
• Foliage Porosity Winter: Porous
• Foliage Texture: Coarse
• Fruit/Seed Color: Brown
• Fruit/Seed Conspicuous: Yes
• Growth Form: Multiple Stem
• Growth Rate: Moderate
• Height at 20 Years Maximum (feet): 16
• Height Mature (feet): 16
• Leaf Retention: No
• Lifespan: Moderate
• Low Growing Grass: No
• Resprout Ability: No
• Shape and Orientation: Erect
• Toxicity: None
• Adapted to Coarse Textured Soils: Yes
• Adapted to Fine Textured Soils: No
• Adapted to Medium Textured Soils: Yes
• Anaerobic Tolerance: Medium
• CaCO3 Tolerance: Low
• Cold Stratification Required: No
• Drought Tolerance: Low
• Fertility Requirement: Medium
• Fire Tolerance: High
• Frost Free Days Minimum: 150
• Hedge Tolerance: Low
• Moisture Use: High
• pH (Minimum): 4.5
• pH (Maximum): 7
• Planting Density per Acre Minimum: 700
• Planting Density per Acre Maximum: 1700
• Precipitation (Minimum): 35
• Precipitation (Maximum): 60
• Root Depth Minimum (inches): 16
• Salinity Tolerance: None
• Shade Tolerance: Intermediate
• Temperature Minimum (°F): -23
• Bloom Period: Summer
• Commercial Availability: Routinely Available
• Fruit/Seed Abundance: Low
• Fruit/Seed Period Begin: Summer
• Fruit/Seed Period End: Fall
• Fruit/Seed Persistence: No
• Propagated by Bare Root: Yes
• Propagated by Bulbs: No
• Propagated by Container: Yes
• Propagated by Corms: No
• Propagated by Cuttings: No
• Propagated by Seed: Yes
• Propagated by Sod: No
• Propagated by Sprigs: No
• Propagated by Tubers: No
• Seed Spread Rate: Slow
• Seedling Vigor: Low
• Small Grain: No
• Vegetative Spread Rate: Slow

Related Plants

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  Mountain Sweetpepperbush

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  Coastal Sweetpepperbush

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  Sweetpepperbush