Pet Safe
moderate Care
bigleaf hydrangea
Hydrangea macrophylla 'Horwack' PISTACHIO
Bigleaf hydrangea is a beautiful flowering shrub, bearing large, white flowers in conical clusters against vibrant, dark-green foliage. The 'Horwack' PISTACHIO variety is especially eye-catching, with its popcorn-like flower heads, made up of delicate green blooms, that transition to warm pink. This low maintenance evergreen is easily pruned to desired size and shape, and is hardy down to 07-12 degrees Fahrenheit. It is lovely planted in groups as a border or foundation hedge and can become a stunning focal point in any garden.
Sunlight
Partial Shade
Water Needs
medium
USDA Hardiness Zones
Zone 6Zone 7Zone 8Zone 9
Hardiness Map
Green areas show climates worldwide where this plant can grow.
Zone 6Zone 7Zone 8Zone 9
Loading map…
Water Every
"2-3" days
Sun Needs
partial-shade
Growth
High
Care Level
Moderate
Watering Schedule
Frequency
Day 1"2-3" daysDay NaN
💧 Water every "2-3" days
Seasonal Adjustments
Adjust watering frequency based on temperature, humidity, and season. Water more frequently in summer and less in winter.
Pro Tip: Check soil moisture before watering. Stick your finger 1-2 inches into the soil—if it's dry, it's time to water!
Season
Fall
Sep Oct Nov
Winter
Dec Jan Feb
Spring
Mar Apr May
Summer
Jun Jul Aug
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
—
—
—
—
—
Starts Flowering
Harvest Fruit
Starts Flowering
Harvest Fruit
Starts Flowering
Harvest Fruit
—
—
—
—
Pruning Time
Flowering
Fruiting
How to Propagate
Seed Propagation
Start seeds indoors 6-8 weeks before last frost date
Greenwood Cuttings
Take 4-6" cuttings in spring, root in water or moist soil
Hardwood Cuttings
Take 4-6" cuttings in spring, root in water or moist soil
Stem Propagation
Propagate via Stem Propagation for best results
Cutting
Take 4-6" cuttings in spring, root in water or moist soil
Is This Plant Right for You?
Good For:
- •Homes with pets
Consider Carefully:
- •Indoor growing
- •Infrequent watering
Bloom Seasons
summer
Care Tips
Light Requirements
Enjoys dappled or limited direct sun—about 2–4 hours of morning or late afternoon light and protection during peak midday sun.
Watering
Keep soil consistently moist but not waterlogged. Water when top inch of soil is dry.
Best Planting Time
Plant in early spring or fall for best results. Blooms in summer.