Quercus stellata
Post oak · also Iron oak
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Quercus stellata, the post oak or iron oak, is a North American species identifiable by its rounded cross-like leaf lobes and hairy underside. It is a slow-growing deciduous tree that thrives in dry areas and poor soils, exhibiting resistance to rot, fire, and drought, making it a resilient choice for urban landscapes.
Where it grows
Trees in each city's inventory, with the share of that city's named trees this species accounts for.
- 820.04%7.6 yr5.3 in
- 80.00%—12 in
- 70.01%—9.9 in
- 10.00%—9.3 in
Traits
- Foliage
- Deciduous
- Mature height
- 40–50 ft
- Canopy spread
- 35–50 ft
- Growth rate
- Slow
- Soil
- Poor soils
- Water needs
- Moderate
- Drought tolerance
- High
- Wildlife value
- Moderate
- Fire risk
- Low
- Blooms
- Mar, Apr, May
Trunk diameters across every city: median 6.0 in, mean 11 in, 90th percentile 32 in. Measured at breast height, as published by each inventory.
Native range
Terrestrial ecoregions where this species is native. Trees in the dataset mostly stand well outside it.
Temperate Broadleaf & Mixed Forests
- East Central Texas forests
- Mississippi lowland forests
- New England-Acadian forests
Other Quercus in the catalogue
74 of the top 2,000 species are in this genus.
