Swamp Azalea
Rhododendron viscosum
Also known as: Texas Azalea
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Ericaceae
- Genus:
- Rhododendron
- Species:
- Rhododendron viscosum
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Shrub
- Height:
- 12-20 ft
- Light Requirements:
- Part Shade
- Drought Tolerance:
- High
- Bloom Months:
- may, jun, jul, aug
- Bloom Colors:
- White, Pink
- Landscaping Shrub:
- Yes
Native Range
United States: Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Florida, Georgia, Louisiana, Massachusetts, Maryland, Maine, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont, West Virginia
Keystone Species Ranking
- Caterpillar Keystone:
- ★★☆☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)
Host Plant for Caterpillars
Azalea sphinx (Darapsa choerilus), Gypsy moth (Lymantria dispar), Hydrangea sphinx (Darapsa versicolor), tritona dagger moth (Acronicta tritona)
Soil Requirements
- Soil Type:
- moist, acidic, well-drained soil
- pH:
- 4.5 - 6.0 (acidic to slightly acidic)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers organic-rich environments
Germination Information
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 90 days.
Notes: Seeds may require light for germination.
Source: OpenAI GPT-4o