Persian Ironwood is a tree, a long-term addition to the landscape. It's hardy across USDA zones 5 through 8, shrugs off deer and shrugs off dry spells. Its early spring flowers are a modest draw for native bees.
Persian Ironwood — the short answer
Persian Ironwood: grown in zones 5–8, full sun, pH 5.5–7.
- USDA zones
- 5–8
- Not verified — NC State Extension Gardener Plant Toolbox lists zones 4a–7b
- Soil pH
- 5.5–7
- We haven't confirmed this against a published source yet.
- Sun
- Full Sun
- We haven't confirmed this against a published source yet.
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — each tile names its own row's source, because per-field provenance varies.
Score Persian Ironwood on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether persian ironwood actually takes — and those shift from one yard to the next. Enter your address and we'll score persian ironwood against your land's real conditions.
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What Persian Ironwood is
Persian Ironwood grows as a perennial and reaches around 30 feet at maturity. It blooms red in early spring. It's also deer-resistant.
Mature height and deer resistance: We haven't confirmed this against a published source yet.
How to grow Persian Ironwood
Persian Ironwood grows in USDA zones 5 through 8. Persian Ironwood does best in full sun — at least 6 hours of direct sun a day — and soil from pH 5.5 to 7, on well-drained ground.
USDA Zones
5-8
Not verified — NC State Extension Gardener Plant Toolbox lists zones 4a–7b
Soil pH
5.5 - 7
We haven't confirmed this against a published source yet.
Sun
Full Sun
We haven't confirmed this against a published source yet.
Drainage
well (dry spells)
We haven't confirmed this against a published source yet.
Mature Height
30 ft
We haven't confirmed this against a published source yet.
Plant it right
Set persian ironwood in full sun with well-drained soil. We haven't confirmed this against a published source yet.
Match the soil
Persian Ironwood prefers pH 5.5 to 7. We haven't confirmed this against a published source yet. A quick soil test from your local Extension lab tells you whether to add lime or sulfur to land in band.
Water while it roots in
Water deeply while persian ironwood establishes, letting the soil dry between soakings; once its roots are in, it rides out dry spells on its own.
Shape it while it is young
Prune persian ironwood only to remove dead, damaged or crossing branches while it is young; it is grown for its form, not a harvest, so little more is needed once it settles in.
Where Persian Ironwood thrives
Persian Ironwood is hardy across USDA zones 5 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.
A USDA zone is a 10°F band of average annual extreme winter minimum, so zones 5–8 spans average winter lows from -20°F to 20°F (USDA PHZM 2023). Across the 50 states and DC, that band covers 19 outright and splits 31 more down the middle — and which side of that line your land sits on changes the answer.
Zones 5–8·Where Persian Ironwood growsOpen map →
This map is derived from the USDA ARS / PRISM Plant Hardiness Zone Map (2023) and is not the official USDA Plant Hardiness Zone Map.
Where Persian Ironwood stands, state by state
Persian Ironwood is rated for zones 5–8 — a cold floor USDA puts at -20 to -10°F. Across the 50 states and DC, 19 sit fully inside that band, the line runs through 31 more, and 1 sits outside it — and inside every split state, the same line runs on at county grain.
Fully inside zones 5–8
19 states
3 of 19 shown
The line runs through
31 states
3 of 31 shown
Persian Ironwood’s band covers part of each of these states — which side of the line your county sits on changes the answer, and each state page draws it.
Outside zones 5–8
1 state
- North Dakota · zones 3b-4b
Winter cold is the limit here — the same plant often works in a container that comes under cover. Each link is that state’s own growing hub.
State zone extents: USDA Plant Hardiness Zone Map (PHZM) 2023. A zone is a 10°F band of average annual extreme minimum temperature, so a state that splits the band contains the boundary — its own page draws the county line, and a parcel report resolves which side your land sits on.
What grows around Persian Ironwood
Growing guides for persian ironwood
Good to know
Persian Ironwood offers low value to bees and other pollinators. We haven't confirmed this against a published source yet.
Your land is one point inside Persian Ironwood's range
This page resolves to the species. Your state page draws the county line, and a report reads the parcel — the soil pH, drainage, sun, and frost dates on your exact ground, which no species average can see.
See if Persian Ironwood will thrive on your land
Zone averages are a start. Your soil pH, drainage, sun exposure, and frost dates shape whether persian ironwood actually takes. We score it against the mapped and modelled 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
How we know this about Persian Ironwood
The figures above are cited per row, not per site: the pH band names this plant’s own source column, the three temperature figures each carry their own, and days-to-maturity cites the publication that actually lists it. All of it comes from the Growable Ground Plant Database — a compilation over FAO ECOCROP, USDA PLANTS, and university Extension sources, published openly with per-field provenance.
Grounded inUSDA PLANTS Database
Frequently asked questions
Can I grow Persian Ironwood in my zone?
Persian Ironwood grows in USDA hardiness zones 5 through 8. Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
When should you plant Persian Ironwood?
Set persian ironwood 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 Persian Ironwood need?
Persian Ironwood needs full sun — a spot that catches at least 6 hours of direct summer sun a day. We haven't confirmed this against a published source yet. In more shade it still grows, but usually gives a smaller, later crop. The catch is that a yard rarely gets even light everywhere — a fence, the house, or one tall tree can quietly take those hours. A Growable Ground report reads the real sun-hours across your land, canopy and buildings included, so you can pick the brightest bed before you plant.
What soil does Persian Ironwood need?
Persian Ironwood prefers soil pH 5.5 to 7, on well-drained ground. We haven't confirmed this against a published source yet. Your report scores your parcel's mapped soil against that using USDA SSURGO data.
Does Persian Ironwood attract pollinators?
Yes — persian ironwood's flowers are a modest nectar source for native bees. We haven't confirmed this against a published source yet.
Keep exploring Persian Ironwood
Persian Ironwood state by state
Every state persian ironwood's zone reaches — 17 link straight to that state's persian ironwood growing page; the rest open the state's full growing guide.