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Western Redcedar Firewood

Thuja plicata·softwood·fair overall rating

Western Redcedar Firewood at a Glance

Heat Output
18.2M BTU
per cord
Seasoning Time
3–6 months
to dry below 20%
Split Difficulty
medium
Smoke Level
medium
Spark Tendency
many
Fireplace Use
Not recommended
Overall Rating
fair
Best Uses

Burn Characteristics

BTU / Cord

18.2

million BTU

Dry Weight

2,632

lbs/cord

Seasoning

36

months

Split Difficulty

Medium

Smoke Level

Medium

Spark Tendency

Many

Coal Quality

poor

Overall Rating

fair

Is Western Redcedar a Good Firewood?

Out in the Pacific Northwest, Western Redcedar is everywhere. And I mean everywhere. If you've cleared land or had storm damage in Oregon or Washington, chances are you've got a pile of this stuff.

Now here's what surprised me. At 18.2 million BTU per cord, Western Redcedar produces significantly more heat than most softwoods and even some lower-tier hardwoods. At 2,632 lbs dry and 2,950 lbs green, it's not super heavy but it's got more substance than its Northern and Eastern cousins. Compare it against other firewood types and it holds up better than you'd expect.

Splitting is moderately difficult, not because it's super dense, but because the grain can be stringy and fibrous, especially on bigger rounds. A sharp maul works, just expect some stubborn pieces. The smoke level is moderate and the fragrance is excellent, that classic, unmistakable cedar aroma that fills the whole yard when you're bucking rounds.

Western Redcedar seasons fast, 3 to 6 months. That low green-to-dry weight ratio means there's not a ton of moisture to drive off. Split it in early spring and you're good to go by summer.

Here's the real talk, though: it sparks. A lot. Do not burn this in an open fireplace. In a closed wood stove with a screen, it's fine, but uncontained Western Redcedar fires will throw embers everywhere. The coals are poor, so it burns hot and fast rather than slow and steady. Use it for quick warmth, shoulder season burns, and kindling, or mix it with a dense hardwood. If you want to compare it to a lighter-duty cedar option, check out White Cedar.

Species Information

Scientific Name
Thuja plicata
Type
softwood
Regions
Pacific Northwest, West
Availability
Common
Fragrance
Excellent
Green Weight
2,950 lbs/cord

How many cords of Western Redcedar do you need?

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How Long Does Western Redcedar Take to Season?

Western Redcedar firewood seasons in about 3–6 months — one of the fastest-drying species available. Split it in spring, stack it with good airflow, and it should be ready to burn by fall. The relatively low density that keeps its BTU output moderate also means moisture escapes quickly compared to denser hardwoods like oak or hickory.

Because Western Redcedar dries quickly, it’s an excellent choice if you need firewood on short notice. Even wood cut in late spring can be ready by October in a warm, breezy location. Just make sure to get it off the ground and cover the top only — wrapping the whole stack traps moisture and defeats the purpose.

For detailed drying timelines for all 70 species, see our firewood seasoning guide. And if you want to understand why seasoning matters so much, our green vs seasoned firewood page breaks down exactly what happens when you burn wet wood.

Can You Burn Western Redcedar in a Fireplace?

Western Redcedar is not recommended for open fireplaces. It throws many sparks — more than most species — which is a genuine safety hazard when there’s no barrier between the fire and your living space. A single ember landing on carpet or furniture can start a house fire. Burn Western Redcedar exclusively in a closed wood stove or a fireplace insert with sealed glass doors, where it performs beautifully.

If you want the heat output of Western Redcedar without the fireplace concerns, a modern EPA-certified wood stove is the best option. Stoves contain sparks completely, operate at much higher efficiency than open fireplaces (72% vs 10–15%), and let you take full advantage of Western Redcedar’s 18.2 million BTU per cord.

Wondering which species are the best fireplace choices overall? Check our best firewood rankings, or compare Western Redcedar against all 70 species on the BTU chart.

Frequently Asked Questions

How long does Western Redcedar take to season?
Western Redcedar firewood takes 3–6 months to season to below 20% moisture content. It's one of the fastest-drying species. Always split before stacking — rounds dry far slower than split pieces.
Can you burn Western Redcedar in a fireplace?
Western Redcedar is not recommended for open fireplaces due to heavy sparking. Use it in a closed wood stove or fireplace insert with glass doors instead.
How many BTU does Western Redcedar firewood produce?
Western Redcedar produces 18.2 million BTU per cord when properly seasoned. That's a moderate heat output, best for supplemental heating or shoulder season use.

How many cords of Western Redcedar do you need?

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