Oregon ash, Fraxinus
latifolia
--------------------------------------------------------------------------------------------------------------------
Range
Ø
Western regions of Washington, Oregon,
and California (5)
Climate, elevation
Ø Moist,
moderate climate; low elevations (3)
Local occurrence (where,
how common)
Ø Often
on the edges of streams, lakes, or in other areas that are occasionally flooded
(1)
Habitat preferences
Ø Moist
to wet soils (1)
Ø Full
sun to partial shade (2)
Plant strategy type/successional
stage (stress-tolerator, competitor, weedy/colonizer, seral, late successional)
Ø Stress-tolerator: Oregon ash can tolerate a significant amount of inundation and fluctuating water levels (most tolerant early in the growing season) (4)
Ø Can form monotypic stands or mixed stands with black cottonwood and red alder (2)
Associated species
Ø Slough
sedge (Carex obnupta), red alder (Alnus rubra), red osier dogwood
(Cornus sericea), willows (Salix spp.), black cottonwood (Populus
balsamifera spp. trichocarpa), pacific ninebark (Physocarpus
capitatus) (1)
May be collected as:
(seed, layered, divisions, etc.)
Ø Seed
Ø Salvaged seedlings
Collection restrictions or guidelines
Ø Collect
seed from August to October (2)
Ø Salvage
seedlings under four feet tall in late winter or early spring before bud break
(keep roots covered and moist until re-planting) (2)
Seed germination (needs
dormancy breaking?)
Ø Three
months cold stratification (2)
Seed life (can be stored,
short shelf-life, long shelf-life)
Ø Best
if planted immediately after collection
Ø Can
be stored if necessary
Recommended seed storage conditions
Ø Best
if planted immediately after collection
Ø Seeds
can be stored by air-drying them thoroughly (2)
Propagation recommendations (plant seeds, vegetative parts, cuttings, etc.)
Ø
Sow seeds as soon as possible after
collection into garden beds or trays (2)
Ø
Mulch in the fall, and remove carefully
in the spring (2)
Ø
Seedlings should be installed immediately
on site after uprooting (4)
Soil or medium requirements (inoculum necessary?)
Ø
Soil with relatively high water holding
capacity
Installation form (form, potential for successful outcomes, cost)
Ø
From seed: outplant seedlings after 1-2
years (2)
Ø
Salvaged seedlings: plant immediately,
make sure to keep roots moist and covered in transplanting process (4)
Care requirements after installed (water weekly, water once etc.)
Ø Soil
should be kept moist
Sources cited
1.
Guard, B. Jennifer. Wetland Plants of
Oregon and Washington. Lone Pine Publishing. Vancouver, B.C. 1995.
2.
Leigh, M. 1999. Grow Your Own Native
Landscape: A guide to identification,
propagation, and landscaping with western Washington native plants. Washington State University Cooperative Extension.
3.
Pojar, J. and A. MacKinnon. Plants of the
Pacific Northwest Coast-Washington, Oregon, British Columbia and Alaska. B.C.
Ministry of Forest and Lone Pine Publishing. 1994.
4.
Stevens, M. and R. Vanbianchi. 1993.
Restoring Wetlands in Washington: A Guidebook for Wetland Restoration, Planning
and Implementation. Washington State Department of Ecology Publication 93-17,
110 p.
5.
USDA, NRCS. 2002. The PLANTS Database,
Version 3.5 (http://plants.usda.gov).
National Plant Data Center,
Baton Rouge, LA 70874-4490 USA.
Data compiled by:
Crystal Elliot, 4/22/03