Pet Safe
moderate Care
azalea
Rhododendron 'St. Louis Blues'
Azalea (Rhododendron 'St. Louis Blues') is a vibrant deciduous shrub that adds deep hues of rich color to any landscape. It features huge violet-blue flowers with yellow centres that bloom in the spring and attract plenty of pollinators. The blooms last for a few weeks and are followed by lustrous medium green, evergreen foliage, which turns a reddish-purple hue in the colder months. It prefers moist, acidic soil and full to partial sun exposure, and can grow up to six feet tall. Azalea 'St. Louis Blues' is sure to bring plenty of bright color to any garden!
Sunlight
Partial Shade
Water Needs
medium
USDA Hardiness Zones
Zone 4Zone 5Zone 6Zone 7Zone 8
Hardiness Map
Green areas show climates worldwide where this plant can grow.
Zone 4Zone 5Zone 6Zone 7Zone 8
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Water Every
"7-10" days
Sun Needs
partial-shade
Growth
Low
Care Level
Moderate
Watering Schedule
Frequency
Day 1"7-10" daysDay NaN
💧 Water every "7-10" days
Seasonal Adjustments
Adjust watering frequency based on temperature, humidity, and season. Water more frequently in summer and less in winter.
Pro Tip: Check soil moisture before watering. Stick your finger 1-2 inches into the soil—if it's dry, it's time to water!
Season
Fall
Sep Oct Nov
Winter
Dec Jan Feb
Spring
Mar Apr May
Summer
Jun Jul Aug
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Pruning Time
How to Propagate
Layering Propagation
Bend stem to soil surface, cover lightly, roots form in 4-6 weeks
Cutting
Take 4-6" cuttings in spring, root in water or moist soil
Grafting Propagation
Join scion to rootstock, bind securely until healed
Division
Divide root ball in spring, replant sections immediately
Seed Propagation
Start seeds indoors 6-8 weeks before last frost date
Is This Plant Right for You?
Good For:
- •Homes with pets
Consider Carefully:
- •Indoor growing
- •Infrequent watering
Bloom Seasons
Care Tips
Light Requirements
Enjoys dappled or limited direct sun—about 2–4 hours of morning or late afternoon light and protection during peak midday sun.
Watering
Keep soil consistently moist but not waterlogged. Water when top inch of soil is dry.