
Hydrangea macrophylla 'Alpengluhen'
Bigleaf Hydrangea (Hydrangea macrophylla 'Alpengluhen') is a magnificent flowering shrub known for its enormous, mophead flowers. Growing up to 6 feet tall and wide, the shrub produces huge clusters of deep rose flowerheads from midsummer through late summer. Its large, dark green glossy leaves create an impressive backdrop for the striking blooms. The blooms appear on old wood, so prune after flowering to avoid cutting off next years flowers. These hardy native shrubs thrive in full sun to partial shade and will reward you with a show stopping display each year.
Sunlight
Partial Shade
Water Needs
medium
Green areas show climates worldwide where this plant can grow.
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Water Every
"7-10" days
Sun Needs
partial-shade
Growth
High
Care Level
Moderate
💧 Water every "7-10" 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!
Start seeds indoors 6-8 weeks before last frost date
Take 4-6" cuttings in spring, root in water or moist soil
Take 4-6" cuttings in spring, root in water or moist soil
Propagate via Stem Propagation for best results
Take 4-6" cuttings in spring, root in water or moist soil
Good For:
Consider Carefully:
Enjoys dappled or limited direct sun—about 2–4 hours of morning or late afternoon light and protection during peak midday sun.
Keep soil consistently moist but not waterlogged. Water when top inch of soil is dry.
Plant in early spring or fall for best results. Blooms in summer.