Rhododendron 'Shamrock'

Rhododendron

Family
Ericaceae (er-ek-AY-see-ee)
Genus
Rhododendron (roh-do-DEN-dron)
Synonym
Spacing
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
Hardiness
18-24 in. (45-60 cm)
Sun Exposure
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
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)
Danger
Full Sun
Sun to Partial Shade
Bloom Color
Parts of plant are poisonous if ingested
Bloom Time
Pale Yellow
Green
Foliage
Mid Spring
Height
Shrubs
Sun Exposure
Hardiness
Bloom Color
Bloom Time
Bloom Time
Bloom Color
Bloom Time
Bloom Time
Bloom Color
Bloom Color
Bloom Time
Other Details
Other details
Evergreen
Smooth
Seed Collecting
Category
From semi-hardwood cuttings
Patent Information
Foliage Color
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Bloom Characteristics
Water Requirements
Where to Grow
Seed Collecting
Fruit Shape
Fruit Size
Fruit Colors
4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
Growing Habit
Days to Maturity
Seed Type
Disease Resistance
Leaf Type
Foliage Color
Bloom Characteristics
Water Requirements
Where to Grow
Other details
Propagation Methods
Soil pH requirements
Patent Information
Plant Size (check one)
Growing Habit
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
Does it set seed?
Flower Size
Flower Type
Blooming Habit
Foliage Habit
Color Patterns
Awards (if applicable)
Seed Type
Growth Habit
Days to Maturity
Awards (if applicable)
Bloom Shape
Other Details
Pruning Instructions
Kernel Color
Flower Shape
Flower Habit
Bloom Size
Color Pattern
Bloom Shape
Pruning Groups
Bloom Diameter
Heat (Pungency)
Fruit Shape
Fruit Size
Fruit Color
Disease Resistance
Seed Type
Flower Size
Size/Type
Flower Characteristics
Leaf Shape/Type
Leaf Texture
Leaf Color
Propagation
Pollination
Bearing Habit
Rootstock Vigor
Disease Resistance
Fruit Usage
Classification
Regional

This plant is said to grow outdoors in the following regions:

Coos Bay, Oregon

Portland, Oregon

Poulsbo, Washington

Sequim, Washington

Featured Videos

Gardener's Notes:

2
positives
0
neutral
0
negative
Sort By:
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H
Poulsbo, WA (Zone 8b) | April 2012 | positive

This little rhody has thrived for me, for over ten years. It is now about 16 inches tall and 24 inches across. It gets quite a bit of ...Read More

T
St. John's, NL (Zone 5b) | February 2005 | positive

This dwarf rhododendron has greenish-yellow flowers and blooms around St. Patty's Day hence is appropriately named. It is a hybrid betwe...Read More

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