Alert: Limited Online Availability

Now that summer is here, we have limited our stock for online purchase. Find Monrovia plants at your local garden center. Pre-order for 2023 will be available later this year. ×

We no longer grow this plant.
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Chiri-san Sue Mountain Hydrangea

Hydrangea serrata 'Chiri-san Sue'

A superb shrub for shade border or woodland garden, valued for abundant bloom. Highly textured foliage covers the mounded form. Fertile flower clusters are encircled by ray florets, blue in acidic soils and pink in more alkaline conditions. Deciduous.
There are very few rules in gardening, but perhaps the most important one is to work within your zone. Choosing plants that grow and thrive in your particular climate is the very first step toward having a beautiful garden . Learn More

Your climate might be too cold for this plant:


Full shade, Partial shade

Needs regular watering to maintain consistently moist soil.


Due to the seasonal nature of plants, availability at your local garden center is not guaranteed. Give them a call before visiting.

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More Information
LoreIt is often disputed whether Hydrangea serrata is a variety of H. macrophylla, or vice-versa, it is agreed that it is a much hardier species with the ability to bloom on new wood, which in hand makes it highly adaptable to varied climates.
Average Size at MaturitySlow to moderate growth to 4 ft. tall and wide.
Bloom TimeSummer
Deciduous/ EvergreenDeciduous
Flower AttributeFlowers for Cutting, Repeat Flowering, Showy Flowers
Flower ColorBlue
Foliage ColorGreen
Garden StyleAsian/Zen, Cottage, Rustic
Growth HabitRounded
Growth RateModerate
Landscape UseBorder, Hedge, Specimen, Woodland Garden, Cutting Garden, Wildlife Garden, Urban Garden
Light NeedsFull shade, Partial shade
Special FeatureAttracts Butterflies, Easy Care, Gift Plant, Shade Loving, Tolerates Acidic Soil
Water NeedsHigh
Watering NeedsNeeds regular watering to maintain consistently moist soil.
Companion PlantsArborvitae (Thuja); Azalea (Azalea); Boxwood (Buxus); Camellia (Camellia); Japanese Maple (Acer)

Best grown in moisture retentive, well-drained soil. Follow a regular watering schedule during the first growing season to establish an extensive root system. Mulch to keep the root zone cool. Prune spent flowers to promote repeat bloom.

This Plant's Growing Zones: 7-9

USDA Cold Hardiness Zone Map

Your USDA Cold Hardiness Zone:

Your climate may be too cold for this plant