Japanese Holly is grown for its foliage and the structure it brings to a planting. Notably, it shrugs off deer. Its mid spring flowers are a moderate draw for honeybees and native bees.
Zones
Data not available
pH Range
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Sun
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Days to Maturity
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Score Japanese Holly on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether japanese holly actually takes — and those shift from one yard to the next. Enter your address and we'll score japanese holly against your land's real conditions.
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What Japanese Holly is
Japanese Holly grows as a perennial and reaches around ten feet at maturity. It blooms yellow in mid spring. It's also deer-resistant.
How to grow Japanese Holly
Japanese Holly prefers well-drained ground. It needs about 400 hours of winter chill, which is why climate matters as much as soil.
USDA Zones
Data not available
USDA PHZM 2023
Soil pH
Data pending
USDA PLANTS Database
Sun
Data pending
plant_species_v5.csv
Drainage
well (dry spells)
plant_species_v5.csv
Mature Height
10 ft
plant_species_v5.csv
Chill Hours
400+
plant_species_v5.csv
Frost-Free Days
0+
plant_species_v5.csv
Start the season right
Plant japanese holly in full sun, once the soil has warmed and frost risk has passed.
Match the soil
Pull a soil test from your local Extension lab to confirm pH and drainage match japanese holly's needs before planting.
Water steadily
Keep the root zone evenly moist through establishment. A 2–3 inch mulch layer holds moisture without waterlogging.
Keep it in good form
Prune japanese holly to shape as it grows; the reward is its foliage and structure, not a harvest, so steady upkeep is the whole job.
Good to know
One caution for pet owners — japanese holly is toxic to dogs and cats (mild severity). Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency. (Source: ASPCA.)
Japanese Holly offers moderate value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where Japanese Holly thrives
Whether japanese holly thrives on a given site comes down to its soil pH, drainage, sun, and frost dates — the conditions that vary parcel to parcel.
See if Japanese Holly will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether japanese holly 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 Japanese Holly in my zone?
Zone data for japanese holly is being finalized. A Growable Ground report checks your parcel's full suitability against federal soil, climate, and zone data.
When should you plant Japanese Holly?
Most growers plant japanese holly after the last spring frost, once the soil has warmed. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
What soil does Japanese Holly need?
Specific pH data for japanese holly is pending. It prefers well-drained ground. A soil test from your local Extension lab confirms what your site needs.
Does Japanese Holly attract pollinators?
Yes — japanese holly's flowers are a solid nectar source for honeybees and native bees (Xerces Society, Pollinator Partnership).
Is Japanese Holly safe for pets?
Japanese Holly is toxic to pets (dogs,cats) with mild severity. Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency.