Wood Species Guide
Post Oak
Quercus stellata
Also called: Iron Oak, Cross Oak, Box White Oak, Rough Oak, White Oak (in the lumber trade)
What Post Oak looks like
Light to medium brown heartwood with a slightly olive tone, and a narrow pale sapwood.
Grain and texture
Coarse, open grain, often less straight than commercial white oak because the trees tend to be short and branchy.
Working Post Oak: planing, cutting and gluing
Hard and heavy but works well with sharp tools. Knots and crooked grain are common, so plan for some tearout and pick boards carefully. It glues and holds screws well.
Finishing Post Oak: oil, film finishes and epoxy
Takes stain and clear finishes like any white oak. Seal before epoxy, especially around knots and checks, which release a lot of air. Keep iron away from the bare wood to avoid black tannin stains.
Durability, stability and Florida humidity
The heartwood is very resistant to decay, which is how it earned its name as a fence post wood. It can check and twist while drying. In Florida, dry slabs slowly, then keep finished pieces in air conditioning and seal all faces.
Shop notes from our Fort Myers shop
Post oak grows in north and central Florida, so it does turn up from tree removals. The trees are small and branchy, which means shorter slabs with knots and character rather than long clear boards. That works well for benches, side tables and rustic tops. We don't stock it, but ask us and we can often source it.
Common uses for Post Oak
Fence posts, railroad ties, flooring, rustic furniture, barrels, firewood and barbecue smoking wood.
Sustainability and CITES status
Not listed in the CITES Appendices. Widespread in the South and not considered threatened.
Safety and toxicity
- Skin irritation
- Eye irritation
- Respiratory / asthma
- Sensitizer (allergy builds with exposure)
Oak dust often irritates eyes, skin and airways, and some people become allergic with repeated exposure. Long, heavy exposure to fine oak dust is linked to nasal cancer.
- In the shop
- Dust collection + mask or respirator when sanding; gloves if your skin reacts
- Food contact
- Use with care for cutting boards, bowls and utensils
General information, not medical advice. See a doctor if you have a reaction.
Like other oaks, the dust can irritate eyes, skin and airways, and a few people become sensitized over time. Run dust collection and wear a mask or respirator when sanding.
Post Oak in stock now
Ask us. We can often source it.
We don't have Post Oak listed online right now, but new slabs and lumber come in all the time and not everything makes it to the website. Tell us what you're building and we'll check our racks and suppliers.
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