Hydrangea Plant Characteristics and Care

This video tutorial explains how to identify six main groups of hydrangeas grown in North America: big leaf, mountain, panicle, smooth, oakleaf, and climbing. Each group is described in terms of its blooming characteristics, hardiness zones, and unique features. The video also highlights specific series within these groups that offer reliable blooming on both old and new wood. Additionally, it provides tips on pruning and identifying hydrangeas based on leaf shape and bloom structure.

Which of the following is NOT one of the six main groups of hydrangeas grown in North America?

• Big Leaf

• Mountain

• Desert

• Climbing

What is a unique feature of the Let's Dance series of Big Leaf hydrangeas?

• They do not require pruning.

• They are only available in blue.

• They bloom on both old and new wood.

• They bloom only in winter.

Mountain hydrangeas are known for their:

• Resistance to all pests.

• Ability to grow in desert climates.

• Better winter bud hardiness.

• Unique red blooms.

Panicle hydrangeas are most tolerant of which condition?

• Flooding

• Drought

• Sun

• Shade

What is a notable characteristic of Smooth hydrangeas?

• They are only available in yellow.

• They have large spherical blooms.

• They are native to Europe.

• They bloom on old wood.

Oakleaf hydrangeas are easy to identify because of their:

• Ability to grow in water.

• Cone-shaped blooms.

• Oak leaf-shaped leaves.

• Bright yellow flowers.

Which zone are Oakleaf hydrangeas hardy to?

• Zone 4

• Zone 3

• Zone 5

• Zone 6

What is the main difference between true and false climbing hydrangeas?

• The color of their leaves.

• The structure of their blooms.

• Their growth rate.

• Their ability to climb.

True climbing hydrangeas climb using:

• Vines

• Thorns

• Aerial roots

• Tendrils

Which of the following is a false hydrangea?

• Hydrangea quercifolia

• Schizophragma roseum

• Hydrangea serrata

• Hydrangea macrophylla