Can you make maple syrup in Oregon?
Local timing guidance
OSU (Jones 2022): 'roughly the beginning of Dec. to the end of Feb.' OSU EM 9163: 'late fall and winter (after the leaves have dropped) through early spring prior to bud-break.' Older practitioner rule: 'January and February are the months to begin tapping.'
Source: OSU via WMSWCD 2022 (VERIFIED); OSU EM 9163 (VERIFIED); Small Farmer's Journal 1983 (PRACTITIONER)
Trees
Tappable trees in Oregon
| Species | Status | Where |
|---|---|---|
| Bigleaf mapleAcer macrophyllum | native | Coast Range, Willamette Valley, Klamath-Siskiyous and Cascade foothills; FEIS: 'obtaining best development in southern Oregon'USFS FEIS (OR in states list) |
| BoxelderAcer negundo | introduced | 'naturalized in ... eastern Oregon' (FEIS); planted in towns east of the CascadesUSFS FEIS |
| Rocky Mountain / Douglas mapleAcer glabrum | native | Mountains statewide; small, rarely tappableUSFS FEIS (OR in STATES list) |
| Norway mapleAcer platanoides | introduced | Common street tree in Portland and valley townsUSFS FEIS (widely planted); RECALL for Oregon escape |
| Paper birchBetula papyrifera | native | Listed for OR in FEIS (northeastern Oregon)USFS FEIS |
Who already does it
Sugaring in Oregon, documented
OSU Extension EM 9163 'Making bigleaf maple syrup: A hobbyist's guide' (2017): 'sap collection is done in the late fall and winter (after the leaves have dropped) through early spring prior to bud-break'; store sap at '38°F or colder'
Oregon State University Extension Service · VERIFIED
OSU College of Forestry bigleaf maple project (Eric T. Jones): 'The tapping season is in winter, roughly the beginning of Dec. to the end of Feb.'; 'Bigleaf has roughly half the sugar content of sugar maple ... you need 80 to 90 gallons of bigleaf sap'; producers listed on Oregon Tree Tappers; training via the nonprofit Oregon Maple Project; funded by USDA Acer Access and Development
West Multnomah SWCD guest article by OSU, 16 Mar 2022 · VERIFIED
Willamette Valley hobbyist Nolan Lynch, Champoeg area: 150 taps since 2021, sap 'about one to two percent sugar content'; OSU working with valley sugarmakers
Newsberg, 1 Apr 2024 · PRACTITIONER
Historic how-to (1983): 'In most areas of the northwest, January and February are the months to begin tapping'; warns that west of the Cascades 'We may have five to six weeks without frosts ... If so, no maple syrup for that year'
Small Farmer's Journal (Victor Morejohn, 1983; reposted) · PRACTITIONER
Cautions
What local sources warn about
- Half the sugar: '80 to 90 gallons of bigleaf sap' per gallon of syrup; vacuum tubing and reverse osmosis are what make it pay. (OSU via WMSWCD 2022 (VERIFIED))
- Frost-free winters can mean no crop at all west of the Cascades; season is 'longer and less predictable' than in the East and depends on elevation and microclimate. (Small Farmer's Journal 1983 (PRACTITIONER); The Astorian/Seattle Times 2020 (PRACTITIONER))
- Old bigleaf bark is 'brown and shallowly grooved, which makes tapping more difficult'; collect daily and keep sap at 38 °F or colder. (OSU EM 9163 (VERIFIED))
- Most tapping and processing supplies 'have to be bought from the East' — plan lead time. (OSU via WMSWCD 2022 (VERIFIED))
Where to look
Likely sugaring country
Corvallis (Benton County)
OSU College of Forestry bigleaf project base; mid-Willamette Valley
Newberg / Champoeg (Yamhill–Marion)
Documented Willamette Valley sugarmakers (150-tap grove)
Roseburg (Douglas County)
Southern Oregon, where FEIS says bigleaf maple reaches its best development
Autosuggest priority place ('can you tap maple trees in oregon'). OSU College of Forestry blog post fetched but returned only 704 chars (JS); its content is covered by the WMSWCD guest article. Oregon Tree Tappers site itself not opened.
FAQ
Sugaring in Oregon: questions
- Can you tap maple trees in Oregon?
- Yes, in parts of it. Yes in western Oregon: bigleaf maple is everywhere from the Coast Range to the Cascade foothills, OSU Extension publishes a hobbyist guide and runs a USDA-funded bigleaf project with the Oregon Maple Project and Oregon Tree Tappers, and Willamette Valley sugarmakers run 100+ taps — but sap is about half as sweet as sugar maple and some winters bring no freeze at all.
- When do you tap maple trees in Oregon?
- OSU (Jones 2022): 'roughly the beginning of Dec. to the end of Feb.' OSU EM 9163: 'late fall and winter (after the leaves have dropped) through early spring prior to bud-break.' Older practitioner rule: 'January and February are the months to begin tapping.' (OSU via WMSWCD 2022 (VERIFIED); OSU EM 9163 (VERIFIED); Small Farmer's Journal 1983 (PRACTITIONER))
- Which trees can you tap in Oregon?
- Bigleaf maple (Acer macrophyllum, native): Coast Range, Willamette Valley, Klamath-Siskiyous and Cascade foothills; FEIS: 'obtaining best development in southern Oregon' Boxelder (Acer negundo, introduced): 'naturalized in ... eastern Oregon' (FEIS); planted in towns east of the Cascades Rocky Mountain / Douglas maple (Acer glabrum, native): Mountains statewide; small, rarely tappable Norway maple (Acer platanoides, introduced): Common street tree in Portland and valley towns Paper birch (Betula papyrifera, native): Listed for OR in FEIS (northeastern Oregon)
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