Autumn Sweetheart® Encore® Azalea

  • 1 Gallon
  • 2 Gallon
  • 3 Gallon

Earn up to 235 PBM Points.

Jumpstart Your New Azaleas
Espoma Organic Azalea-Tone - 4lb Bag

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5oz. Bio-tone Starter Plus

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4lb. Bio-tone Starter Plus

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About Autumn Sweetheart® Encore® Azalea

Autumn Sweetheart offers two shades of color. The pink flowers are so soft they sometimes appears almost white. Dotted with lavender freckles the tantalizing blooms provide the perfect adornment for the rich evergreen foliage. The growth habit and striking color provide the perfect adornment for the rich evergreen foliage. Sweetheart is one of the larger Encore Azaleas reaching a mature size of 4ft H x 4ft W. Plant your Encore Azalea in slightly acidic well-drained garden soil in an area that receives full to part sun and apply a slow release granular fertilizer for best bloom performance.

Spacing Your Autumn Sweetheart Encore Azalea 

Plant your Autumn Sweetheart Encore Azalea 3 feet apart for a seamless planting. Alternatively, plant them 4+ feet apart for space between plantings.

Supplementary Reading:

How and When to Fertilize Encore Azaleas

When Do Encore Azaleas Bloom?

When to Prune Encore Azaleas

The Encore Azalea Buyer’s Guide

How to Plant Encore Azaleas


Common Name
Autumn Sweetheart® Encore® Azalea
Scientific Name
Rhododendron hybrid 'Robleja' PP16249
USDA Zones
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Average Size
Sun Exposure


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Bio-tone Starter Plus - 5oz Pack

The Ultimate Starter Fertilizer with both Endo & Ecto Mycorrhizae
  • Grows larger root mass to help plants establish fast
  • Reduces transplant loss
  • Promotes bigger blooms
  • Microbe enhanced all natural organic fertilizer with no sludges or fillers