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Formosa Southern Indica Azalea - Tree Form

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Formosa Southern Indica Azalea - Single Trunk Tree Form
Rhododendron indica 'Formosa - Standard'

USDA Plant Hardiness Zones: 7b-10b  Find Your Zone >

Note:  For our customers who live and garden north of USDA Plant Hardiness Zone 7b, where this Azalea variety is not winter hardy outdoors, you can enjoy it in containers that can be moved indoors during winter and placed back outside when temperatures warm up in spring.

Special Attributes

Formosa Azalea is one of the best of the Southern Indica Azaleas. It produces an abundance of large (3-4") purple flowers in spring that nearly cover large plants reaching 6 to 8 feet in height with an equal spread. The single trunk tree form (with a 3' bare trunk) is absolutely spectacular as it can be used in so many applications throughout the landscape. 

Landscape & Garden Uses

Growing in a large mound 6 to 8 feet tall and wide, Formosa Azalea is most useful as a natural hedge or in small to large groupings in landscape borders. The plants perform exceptionally well under tall pine trees. Also ideal for use as accents, corner plants or as espalier against large open walls in home foundation plantings. Can also be "limbed up" to form a small tree for containers or garden beds. A fine addition to Azalea gardens and purple-themed color gardens.  

Spacing:  5' for solid hedges;  12' or more for space between plants

Cultural Preferences

Southern Indica Azaleas are easy to grow. They prefer a moist but well-drained, acidic soil that is rich in organic matter and full sun to part shade. That said, full sun is tolerated however we think they perform and look their best when receiving some filtered sunlight during the hottest part of summer afternoons. When established, plants have good drought tolerance. 

Helpful Articles

Click on the link below to get advice from our experts on how to plant and care for Azaleas.


Plant Details

USDA Plant Hardiness Zones: 7b-10b  Find Your Zone >
Plant Type:  Evergreen Flowering Tree
Height at Maturity:  9-10' depending on pruning
Width at Maturity:  6-8' depending on pruining
Spacing:  4-5' from structures, 5' or more from other large plants
Growth Habit / Form:  Small Tree, Rounded, Bushy
Growth Rate:  Moderate
Flower Color:  Bright Purple
Flower Size:  Large, 3-3.5"
Flowering Period:  Spring
Flower Type:  Single
Fragrant Flowers:  No
Foliage Color:  Dark Green
Fragrant Foliage:  No
Berries:  No
Berry Color:  NA
Sun Needs:  Full Sun or Mostly Sun, Morning Sun with Dappled or Afternoon Shade, All Day Filtered Sun, Morning Shade with Evening Sun
Water Needs:  Average, Lower when established
Soil Type:  Clay, Loam, Sand (Amended), Silt 
Soil Moisture / Drainage:  Well Drained Moist
Soil pH:  4.5 - 6.5
Maintenance / Care:  Low
Attracts:  Visual Attention
Resistances:  Heat, Humidity, Sun

Plant Long & Prosper!

Questions? Contact Us!

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