Black Hawthorn
Crataegus douglasii
The original uploader was G716 at English Wikipedia.
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Rosaceae
- Genus:
- Crataegus
- Species:
- Crataegus douglasii
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Shrub , Tree
- Height:
- 20-40 ft
- Light Requirements:
- Full Sun, Part Shade, Shade
- Drought Tolerance:
- High
- Bloom Months:
- may, jun
- Bloom Colors:
- White
Native Range
United States: Alaska, California, Idaho, Michigan, Minnesota, Montana, North Dakota, Nevada, Oregon, South Dakota, Washington, Wisconsin, Wyoming, Canada: Alberta, British Columbia, Ontario, Quebec, Saskatchewan
Keystone Species Ranking
- Caterpillar Keystone:
- ★☆☆☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)
Host Plant for Caterpillars
Reported Fauna Sightings
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- prefers riparian zones and wetland edges
Germination Information
Pre-treatment: Seeds are washed 3:1 Water/Hydrogen Peroxide for 20 minutes followed by a 48 to 72 hour running water soak. Seeds are then placed into a 90 to 120 day cold, moist stratification in milled sphagnum peat moss in a ventilated container under refrigeration set at 1 to 3C. Alternatively, seeds can be stratified naturally by planting them in the fall in a thin layer of sand on mulched field beds.
Establishment: Seeds are collected in late summer and early fall when fruit turns dark purple. Seeds are tan at maturity. Fruits are collected in plastic bags and kept under refrigeration prior to cleaning. Seeds can also be wild collected during fall months and are kept separated according to site, elevation and source. Small lot collection is also possible.
Source: npn.rngr.net