Mountain Laurel is a perennial grown for its purple blooms, which open in mid spring and return year after year. It's hardy across USDA zones 5 through 11, shrugs off deer and shrugs off dry spells. Its mid spring flowers are a moderate draw for native bees.
Zones
5-11
pH Range
4.5-5.5
Sun
Shade
Days to Maturity
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Score Mountain Laurel on your exact land.
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What Mountain Laurel is
Mountain Laurel grows as a perennial and reaches around ten feet at maturity. It blooms purple in mid spring. It's also deer-resistant.
How to grow Mountain Laurel
Mountain Laurel grows in USDA zones 5 through 11. Mountain Laurel does best in shade — at least 2 hours of direct sun a day — and soil from pH 4.5 to 5.5. It needs a growing season of at least 150 frost-free days and about 600 hours of winter chill, which is why climate matters as much as soil.
USDA Zones
5-11
USDA PHZM 2023
Soil pH
4.5 - 5.5
USDA PLANTS Database
Sun
Shade
plant_species_v5.csv
Drainage
Data pending
plant_species_v5.csv
Frost Tolerance
-23°F
plant_species_v5.csv
Mature Height
10 ft
plant_species_v5.csv
Chill Hours
600+
plant_species_v5.csv
Frost-Free Days
150+
plant_species_v5.csv
Start the season right
Plant mountain laurel in shade with at least 2 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Mountain Laurel prefers pH 4.5 to 5.5 (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. Match watering to the plant's drainage preference and your local rainfall.
Harvest at its peak
Cut mountain laurel blooms in the cool of the morning, just as they open, for the longest display.
Good to know
One caution for pet owners — mountain laurel is toxic to dogs and cats and horses (severe severity). Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency. (Source: ASPCA.)
Mountain Laurel offers moderate value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where Mountain Laurel thrives
Mountain Laurel is hardy across USDA zones 5 through 11. 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 5–11·Where Mountain Laurel growsOpen map →
On USDA hardiness-zone overlap, Mountain Laurel can grow in these states:
See if Mountain Laurel will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether mountain laurel actually takes — we score it against the real conditions at your address.
Three things about your exact spot that zone averages miss:
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Frequently Asked Questions
Can I grow Mountain Laurel in my zone?
Mountain Laurel grows in USDA hardiness zones 5 through 11 (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 Mountain Laurel?
Most growers plant mountain laurel after the last spring frost, once the soil has warmed, leaving enough of the season for its 150-day frost-free need. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
How much sun does Mountain Laurel need?
Mountain Laurel is shade-tolerant — it gets by on as little as 2 hours of direct sun, so it earns a place most vegetables can't use. A north-facing strip or the ground under a leafy canopy is right where it belongs. A Growable Ground report shows which corners of your land stay shaded through the day, turning those dim spots into planting spots.
What soil does Mountain Laurel need?
Mountain Laurel prefers soil pH 4.5 to 5.5 (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Mountain Laurel attract pollinators?
Yes — mountain laurel's flowers are a solid nectar source for native bees (Xerces Society, Pollinator Partnership).
Is Mountain Laurel safe for pets?
Mountain Laurel is toxic to pets (dogs,cats,horses) with severe severity. Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency.