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Rhododendron x hybridum 'Gunrei Satzuki'

Common Name(s):

Previously known as:

  • Rhododendron hybrida 'Gunrei Satzuki'
Phonetic Spelling
roh-do-DEN-dron hy-BRID-um
This plant has low severity poison characteristics.
See below
Description

‘Gunrei Satzuki’ azalea is a woody, densely rounded, deciduous hybrid shrub cultivar in the Ericaceae (blueberry) family. This dwarf shrub typically grows 2 to 4 feet tall and wide and its 2 inch pink flowers appear in the late spring to early summer. The genus name derives from the Greek words rhodo, which means rose, and dendron, meaning tree. 

Like all azaleas, ‘Gunrei Satzuki’ prefers moist, well-drained, acidic soils in dappled shade and protection from afternoon sun, which can scorch the leaves. It does not tolerate dense clay, so if you have clay soil, amend with organic material. The roots may rot if soil does not drain well. Plant the root ball high in the soil to help with drainage issues. Avoid overwatering and over-fertilizing. Pruning, if desired, may be done after flowering. 

Use it as an understory shrub or groundcover planted in groups in woodland or naturalized areas. Because of its small size, it is good for small gardens and spaces or at the front of a bed. It also works as a specimen in a pollinator garden where the flowers will attract hummingbirds and bees. 

Insects, Diseases, and Other Plant Problems:  Insect problems include aphids, borers, lace bugs, leafhoppers, mealybugs, mites, nematodes, scale, thrips, and whitefly. Diseases include canker, crown rot, root rot, leaf spot, rust, and powdery mildew. This plant is frequently damaged by deer.

While these shrubs remain very popular for landscape use, many cultivars are susceptible to Phytophthora root rot—this leads to leaf loss, reduced vigor, branch dieback, and wilting. Implement good cultural practices first, such as improving drainage with organic matter or berms and avoiding overwatering or overfertilization. However, if you have a site with a history of this disease, consider planting a root rot-resistant alternative species. 

For suitable alternatives, see this video created by Charlotte Glen as part of the Plants, Pests, and Pathogens series.

 VIDEO Created by Elizabeth Meyer for "Trees, Shrubs and Conifers" a plant identification course offered in partnership with Longwood Gardens.

More information on Rhododendron.

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Cultivars / Varieties:
Tags:
#evergreen#deciduous#wildlife plant#deciduous shrub#nectar plant#low maintenance#dwarf#specialized bees#pollinator plant#flowers late spring#flowers early summer#problem for cats#problem for dogs#bee friendly#problem for horses#compact#dense growth
 
Cultivars / Varieties:
Tags:
#evergreen#deciduous#wildlife plant#deciduous shrub#nectar plant#low maintenance#dwarf#specialized bees#pollinator plant#flowers late spring#flowers early summer#problem for cats#problem for dogs#bee friendly#problem for horses#compact#dense growth
  • Attributes:
    Genus:
    Rhododendron
    Family:
    Ericaceae
    Life Cycle:
    Woody
    Wildlife Value:
    Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli.
    Dimensions:
    Height: 2 ft. 0 in. - 4 ft. 0 in.
    Width: 2 ft. 0 in. - 4 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Ground Cover
    Poisonous
    Shrub
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Dense
    Rounded
    Growth Rate:
    Medium
    Maintenance:
    Low
  • Cultural Conditions:
    Light:
    Dappled Sunlight (Shade through upper canopy all day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    High Organic Matter
    Loam (Silt)
    Sand
    Soil pH:
    Acid (<6.0)
    Soil Drainage:
    Good Drainage
    Moist
    Available Space To Plant:
    12 inches-3 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    6b, 6a, 7b, 7a, 8b, 8a, 9b, 9a
  • Fruit:
    Fruit Type:
    Capsule
  • Flowers:
    Flower Color:
    Pink
    Flower Inflorescence:
    Raceme
    Flower Value To Gardener:
    Showy
    Flower Bloom Time:
    Spring
    Summer
    Flower Shape:
    Funnel
    Flower Petals:
    4-5 petals/rays
    Flower Size:
    1-3 inches
    Flower Description:
    Showy 2" flowers, pink flecked with rose; late spring to early summer
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Hairs Present:
    No
    Leaf Description:
    Small leaves, bred as a bonsai
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Slope/Bank
    Small Space
    Woodland
    Landscape Theme:
    Pollinator Garden
    Design Feature:
    Border
    Small groups
    Attracts:
    Hummingbirds
    Pollinators
    Specialized Bees
    Problems:
    Poisonous to Humans
    Problem for Cats
    Problem for Dogs
    Problem for Horses
  • Poisonous to Humans:
    Poison Severity:
    Low
    Poison Symptoms:
    Vomiting (not in horses), diarrhea, weakness, cardiac failure
    Poison Toxic Principle:
    Grayantoxin
    Causes Contact Dermatitis:
    No