Plant Encyclopedia

Electric Lights™ Red Azalea

Rhododendron 'UMNAZ 633'

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Electric Lights Red Azalea

Discover More Information On Electric Lights™ Red Azalea

At last, a true fire engine red flower on a hardy azalea for northern gardens, with flower buds hardy to -30*F. Electric Lights™ Red explodes in fiery red in early spring, blooming just after the fresh new foliage emerges. It forms an upright mound in the landscape and will tolerate both full sun and part shade.

Plant Attributes

Electric Lights™ Red Azalea, also known by its botanical name, Rhododendron 'UMNAZ 704', is a striking deciduous shrub that is celebrated for its brilliant, vibrant flowers and resilient nature. Originating from the Northern Lights series of cold-hardy azaleas, this plant is known for its remarkable ability to withstand harsh, colder climates that many other azaleas cannot tolerate.

The Electric Lights™ Red Azalea boasts a riot of deep red, funnel-shaped flowers that typically bloom in late spring. These vivid blossoms not only add a dramatic splash of color to any landscape but also attract various pollinators like bees, butterflies, and hummingbirds, making the plant a valuable addition to a biodiversity-friendly garden.

The foliage of the Electric Lights™ Red Azalea is equally impressive. Its leaves are a lustrous green during the warmer months, providing a pleasant contrast to the brilliant red of the flowers. In autumn, the leaves transform into a deep, attractive bronze, adding another layer of visual interest to the garden landscape.

This azalea variety grows to a moderate size, typically reaching heights of 4 to 5 feet, making it an excellent choice for a border, hedge, or a standalone specimen in a garden. It prefers well-drained, acidic soil and benefits from a location that offers some protection from harsh afternoon sun. While it can tolerate lower temperatures, the Electric Lights™ Red Azalea will thrive best when it is not exposed to extremes of cold or heat.

In terms of maintenance, this plant requires moderate watering and prefers a slow-release, acid-forming fertilizer to keep it healthy and vibrant. Pruning should be done after flowering to maintain a neat shape and encourage bushier growth. Regular inspection for common azalea pests like lace bugs and azalea borers can help ensure the longevity and health of the plant.

Landscape Use

The Electric Lights™ Red Azalea is incredibly versatile and can be used in many different ways in landscaping:

  1. Border Planting: Because of its moderate size and attractive shape, the Electric Lights™ Red Azalea makes an excellent border plant. It can line walkways or driveways, or even be planted along the edge of a property for a vibrant, living fence.
  2. Foundation Planting: This azalea can be used as a foundation plant around homes or other structures. Its dense growth and vibrant flowers can help to soften the hard lines of buildings and add a touch of nature to urban environments.
  3. Mass Planting: If you have a large space to fill, consider a mass planting of Electric Lights™ Red Azaleas. When planted in groups, these azaleas create a stunning sea of red flowers in the spring and an attractive bronze foliage display in the fall.
  4. Specimen Planting: The vibrant red flowers of the Electric Lights™ Red Azalea make it a perfect specimen plant. Use it as a focal point in your garden to draw attention and create visual interest.
  5. Woodland Garden: Azaleas naturally thrive in woodland settings, so they are perfect for creating or enhancing a woodland garden. The bright red of the Electric Lights™ variety can add pops of color among the greens and browns of a woodland landscape.
  6. Wildlife Garden: As the flowers of the Electric Lights™ Red Azalea attract pollinators like bees, butterflies, and hummingbirds, incorporating this plant into a wildlife or pollinator garden can help support local biodiversity.

Remember, wherever you decide to plant your Electric Lights™ Red Azalea, ensure it has well-drained soil, some protection from harsh afternoon sun, and a slow-release, acid-forming fertilizer to keep it healthy and vibrant.

Planting & Care

Planting and caring for the Electric Lights™ Red Azalea involves the following steps:


  1. Location: Choose a location that receives partial sun. While azaleas can tolerate full sun, they prefer a bit of shade, especially in the afternoon. Too much sun can lead to scorching of the leaves, while too much shade can result in fewer flowers.
  2. Soil: Azaleas prefer well-drained, acidic soil with a pH between 4.5 and 6.0. If your soil is not acidic enough, you can amend it with compost, peat moss, or a soil acidifier.
  3. Spacing: Azaleas should be spaced according to their mature size. Since Electric Lights™ Red Azalea typically grows to a height and width of 4-5 feet, ensure each plant is at least 4-5 feet from other plants and structures.
  4. Planting: Dig a hole that is twice as wide and as deep as the root ball. Place the azalea in the hole so that the top of the root ball is level with the ground surface. Backfill the hole with the soil you removed and pack it gently around the root ball. Water thoroughly after planting.


  1. Watering: Azaleas prefer consistent moisture, but they don't tolerate waterlogged soil. Water deeply and thoroughly once or twice a week, depending on weather conditions.
  2. Fertilizing: Apply a slow-release, acid-forming fertilizer in late spring after the blooms have faded. Follow the package instructions for proper dosage.
  3. Mulching: Apply a layer of organic mulch around the base of the plant to help retain moisture, regulate soil temperature, and suppress weed growth. Pine bark or pine needles are excellent choices for azaleas because they help acidify the soil as they break down.
  4. Pruning: Prune Electric Lights™ Red Azalea after it finishes blooming in the spring. Remove any dead or diseased branches, and shape the plant as desired.
  5. Pest and Disease Management: Regularly inspect the plant for common azalea pests like lace bugs and azalea borers. If you notice yellowing leaves, this may be a sign of lace bugs, and holes or sawdust at the base of the plant can indicate borers. Treat any infestations early with appropriate insecticides or organic pest control methods.

Remember that the key to a healthy azalea is a balanced care regimen. Regular attention to its needs and prompt intervention when issues arise will ensure your Electric Lights™ Red Azalea remains a beautiful feature in your landscape for many years.

Additional Information

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Electric Lights™ Red Azalea


Plant Features

  • Height: 4-5'
  • Width: 3-4'
  • Hardiness Zone: 4-7
  • Heat Zone: 7
  • Exposure: Full Sun to Part Shade
  • Habit: Upright Rounded
  • Flower Color: Red
  • Foliage: Green

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