Rhododendron, Azalea
Rhododendron 'Imperial Queen'

Family: Ericaceae (er-ek-AY-see-ee)
Genus: Rhododendron (roh-do-DEN-dron)
Cultivar: Imperial Queen

Height
Shrubs

Spacing

Hardiness

Sun Exposure

USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)

Danger

Sun to Partial Shade

Bloom Color

Bloom Time

Foliage

Mid Spring
Blooms repeatedly

Other details

Seed Collecting

Category

From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost
By grafting
By simple layering

Patent Information

Foliage Color

Bloom Characteristics

Water Requirements

Where to Grow

Fruit Shape

Fruit Size

Fruit Colors
5.1 to 5.5 (strongly acidic)

Growing Habit

Days to Maturity

Seed Type

Usage

Disease Resistance

Leaf Type

Propagation Methods

Soil pH requirements

Plant Size (check one)

Growth Rate

Leaf Shape

Leaf Appearance

Degree to which the appearance is present

Leaf Texture (top)

Leaf Texture (bottom)

Leaf Color

Color of Leaf Margin

Leaf Substance

Number of Vein Pairs

Appearance of Margin

Margin Width

Flower Shape

Flower Fragrance
Non-patented

Does it set seed?

Flower Size

Flower Type

Blooming Habit

Foliage Habit

Ploidy

Color Patterns

Awards (if applicable)

Growth Habit

Class

Bloom Shape

Habit

Other Details

Pruning Instructions

Kernel Color

Division

Flower Habit

Bloom Size

Color Pattern

Group

Pruning Groups

Bloom Diameter

Heat (Pungency)

Fruit Color

Section

Pruning

Size/Type

Flower Characteristics

Leaf Shape/Type

Leaf Texture

Propagation

Pollination

Bearing Habit

Rootstock Vigor

Fruit Usage

Classification