Red Oak is a tree, a long-term addition to the landscape. It's hardy across USDA zones 3 through 8. It roots deep, which helps it reach moisture in a dry spell and open up tight soil as it establishes.
Zones
3-8
pH Range
5-7
Sun
Part Sun
Days to Maturity
---
Score Red Oak on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether red oak actually takes — and those shift from one yard to the next. Enter your address and we'll score red oak against your land's real conditions.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
What Red Oak is
Red Oak grows as a perennial and reaches around 75 feet at maturity. It blooms yellow in mid spring.
How to grow Red Oak
Red Oak grows in USDA zones 3 through 8. Red Oak does best in part sun — at least 4 hours of direct sun a day — and soil from pH 5 to 7, on well-drained ground. It needs about 1000 hours of winter chill, which is why climate matters as much as soil.
USDA Zones
3-8
USDA PHZM 2023
Soil pH
5 - 7
USDA PLANTS Database
Sun
Part Sun
plant_species_v5.csv
Drainage
well (dry spells)
plant_species_v5.csv
Frost Tolerance
41°F
plant_species_v5.csv
Mature Height
75 ft
plant_species_v5.csv
Chill Hours
1000+
plant_species_v5.csv
Frost-Free Days
0+
plant_species_v5.csv
Plant it right
Set red oak in part sun with well-drained soil. Many fruit trees need a second variety nearby to pollinate — check before you plant just one.
Match the soil
Red Oak prefers pH 5 to 7 (USDA PLANTS Database). A quick soil test from your local Extension lab tells you whether to add lime or sulfur to land in band.
Water steadily
Keep the root zone evenly moist through establishment. A 2–3 inch mulch layer holds moisture without waterlogging.
Be patient, then harvest
Prune annually while the tree establishes; fruit trees reward patience with years of harvest. Local Extension guides publish per-cultivar bearing-age tables.
Good to know
Good news for pet owners — red oak isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Red Oak isn't classified as a notable pollinator plant in our data — pair it with high-value bloomers nearby to feed bees.
Where Red Oak thrives
Red Oak is hardy across USDA zones 3 through 8. Zone is only the starting point, though: the soil pH, drainage, and frost dates on your specific land decide how well it actually does.
Zones 3–8·Where Red Oak growsOpen map →
On USDA hardiness-zone overlap, Red Oak can grow in these states:
See if Red Oak will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether red oak actually takes — we score it against the real conditions at your address.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Frequently Asked Questions
Can I grow Red Oak in my zone?
Red Oak grows in USDA hardiness zones 3 through 8 (USDA PHZM 2023). Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
When should you plant Red Oak?
Set red oak out in early spring or fall while it's dormant, so the roots establish before the heat of summer. Your local last-frost date — which a Growable Ground report pulls for your exact address — sets the precise window.
How much sun does Red Oak need?
Red Oak does well in partial sun — around 4 hours of direct sun, and it takes some afternoon shade in stride. That flexibility makes it a good match for a bed the house or a nearby tree shades for part of the day. A Growable Ground report maps how the sun actually falls on your land, hour by hour, so you can set it where the light lines up.
What soil does Red Oak need?
Red Oak prefers soil pH 5 to 7, on well-drained ground (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Red Oak attract pollinators?
Red Oak isn't classified as a notable pollinator plant in our data. Pairing it with high-value bloomers nearby keeps bees and butterflies fed.
Is Red Oak safe for pets?
Red Oak is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.