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Dig into Plants: Oakleaf Hydrangea

Oakleaf Hydrangea

Scientific Name: Hydrangea quercifolia

Native to Alabama: Yes

Official state wildflower of Alabama

Monarch Butterfly

Oakleaf Hydrangea
Wikimedia – Anne Norman

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Learn more about…

Basic Information
Classification Button
Maintenance
Adaptations Button
Plant ID
Life Cycle

Basic Plant Information
Lady Bird Johnson Wildflower Center
Stephanie Brundage

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  • I am a vasuclar plant with woody stems above ground, so I am shrub.
  • I do not keep leaves year-round, so I am deciduous.
  • I die back in winter but regrow in spring for many seasons, so I am perennial.
  • I can grow 4 – 8 feet high and 6 – 8 feet wide.

Ecological Benefits
This plant provides food for:

Butterflies

Other Pollinators

Other Birds

Other Plants Found in Alabama with Similar Ecological Benefits:
Smooth Hydrangea
(Hydrangea arborescens)

Maintenance Notes
  • Dormant in winter.
  • Flowers can be cut for an indoor vase.
  • Flowers remain on the plant throughout the winter.
  • Although pruning is not necessary, it can be cut back after flowering to help keep the plant smaller in size.
  • Stems damaged in the winter can be pruned in the spring.
  • Using mulch in the summer help keep the ground moist.
  • When watering, hold hose to base of plant for a count of 5 seconds. Water should reach all roots.
  • Avoid sprinkling water on the leaves.
  • Until established, water two times per week during the summer and once per week during the rest of the year.

Habitat Requirements
This plant prefers:

Full Sun
(6+ hours of sun per day)

Part Sun/ Shade
(2-6 hours of sun per day)

Average Watering
Well-drained, Loamy,
or Moist Soil

Leaf, Flower, and Seed Identification
LEAF DESCRIPTION

Lady Bird Johnson Wildflower Center
Stephanie Brundage

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Leaf Characteristics Chart (PDF)
Shape:
Ovate
Margin:
Lobed or Serrate
Arrangement:
Opposite
Form:
Simple
Description:
Leaves resemble red oak leaves and are 4 – 12 inches in length and have 3-7 lobes; The leaves are bright green on the upper surface and have hairs on the underside giving them a greyish color; Leaves turn shades of yellow, orange, red, or purplish in the fall.
FLOWER DESCRIPTION

Lady Bird Johnson Wildflower Center
Alan Cressler

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Flower Shapes Chart (JPG)
Color:
White, greenish, pinkish purple
Shape:
Cross-shaped
Bloom Months:
May – Jul
Description:
Flowers are arranged on a structure called a panicle which contains 500-1,000 individual flowers; Panical is pyramidal in shape ranging from 4 – 12 inches long and 3 – 4 inches wide; Contains two different types of individual flowers; Marginal flowers are larger and appear white or greenish white in color; Smaller flowers are white in color and turn a purpleish-pink clor as the season progresses; The small flowers are fragrant and are the ones that can be fertilized through pollination.

Lady Bird Johnson Wildflower Center
Alan Cressler

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SEED DESCRIPTION

Wikimedia
Derek Ramsey

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Type:
Fruit – Capsule
Description:
Small; Hemispherical brown/copper-colored capsule
Months in Seed:
Fall
Plant Spreads By:
Seeds
In the fall, the small seeds are dispersed by the wind. When they reach a favorable environment with good soil, they can begin growing into a new plant.
BARK DESCRIPTION

Flickr
Henryr10

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Color:
Fruit – Capsule
Texture:
Exfoliating (shredding): appears paper-like
Description:
Bark is light brown or orange in color. As the bark ages, it becomes exfoliating (shredding) to reveal inner bark that is darker brown. Young bark on new stems has small hairs.

Plant Life Cycle
Plant Life Cycle:

  • All plants start life as a seed.
  • The seed turns into a sprout when it grows roots.
  • The sprout becomes a seedling as grows a stem and leaves above the ground.
  • After the seedling becomes an adult plant it will grow flowers.
  • After the flowers finish blooming, each flower turns into a seed.
  • When the seeds fall down to the ground, the plant life cycle starts again.
  • Each seed can become a plant if it has the food, water and space that it needs to grow.

General Plant Life Cycle – Dreamstime
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ADDITIONAL RESOURCES FOR TEACHERS
Quick Fact Sheet
(Condensed Species Info)
QR Code
(Links to this Webpage)
Plant ID Sign (Text Only):
Ready as-is PDF
Plant ID Sign (Text Only):
Editable Word Doc
Plant ID Sign (With Picture):
Ready as-is PDF
Plant ID Sign (With Picture):
Editable Word Doc

INFORMATION SOURCES FOR THIS PLANT
Lady Bird Johnson Wildflower Center Logo
USDA Natural Resources Conservation Service Logo
Alabama Butterfly Atlas Logo
Missouri Botanical Gardens Logo 2019