shrub

Oakleaf hydrangea

Hydrangea quercifolia

Climate-suitable non-native

Current-climate suitability

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Future-climate resilience

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Sun

Partial shade

Soil moisture

average, moisture-retentive

Heat tolerance

Up to about 38°C

Cold tolerance

Down to about -25°C

Waterlogging tolerance

3/5

Drought tolerance

3/5

Mature size

1.5–2.5 m tall, 2 m spread

Seasonal interest

Summer to autumn · Cream to rust

Maintenance

low

Wildlife supported

General wildlife value 3/5 (verified species relationships are shown only where structured data exists)

Known risks or warnings

Needs moisture while establishing.

Toxicity: mild

Native status is never inferred from climate similarity. Plants restricted or invasive in a jurisdiction are excluded from recommendations there.

Demonstration data. Climate, plant and retailer records shown here are realistic samples awaiting horticultural validation and live data connections.