• Overview
    Light Needs:
    Partial to full sun
    Watering Needs:
    Needs regular watering - weekly, or more often in extreme heat.
    Average Landscape Size:
    Moderate grower to 6 ft. tall, 4 ft. wide.
    Key Feature:
    Spring Flowering
    Late spring
  • Detail
    Botanical Pronunciation:az-ZAY-lee-uh
    Plant type:Shrub, Rhododendron
    Growth habit:Round
    Growth rate:Moderate
    Average landscape size:Moderate grower to 6 ft. tall, 4 ft. wide.
    Foliage color:Green
    Blooms:Late spring
    Flower color:Yellow
    Flower attributesFragrant, Showy Flowers
    Garden styleAsian/Zen
    Design IdeasExceptional early spring color for beds, borders and foundation planting. Add to perimeter plantings. A natural large tree groves and the verges of wildlands or naturalistic landscapes. A traditional choice for Asian inspired gardens. Bold color for reflecting pools and water gardens.
    Companion PlantsGroup this azalea with other very cold hardy plants such as Pocahontas Canadian Lilac, (Syringa x hyacinthiflora 'Pocahontas'), Eastern Snowball, (Viburnum opulus 'Sterile'), Ivory Halo Dogwood, (Cornus alba 'Bailhalo') and Pamela Jackman Alpine Clematis, (Clematis alpina 'Pamela Jackman').
  • Care
    Care Information
    Follow a regular watering schedule during the first growing season to establish a deep, extensive root system. Provide well drained soil, rich in organic matter. Feed with an acid fertilizer after bloom. Keep roots cool with a thick layer of mulch.Pruning time: spring after flowering.
    Light Needs:
    <strong>Partial Sun / Partial Shade</strong>: These two terms are often used interchangeably to mean 3-6 (or 4-6) hours of sunlight each day. However, there is a difference.
<strong>Partial shade</strong> typically means the plants will appreciate a more gentle exposure such as the weaker morning or early afternoon sun, with the emphasis on providing the minimum needed shade and sheltering from intense late afternoon sun. <strong>Partial sun</strong> typically means the plants <u>need</u> some direct sun, so the emphasis is on meeting the required minimum hours of sunlight, with filtered sunlight or shade the balance of the day.
Both are best with shelter from the harshest late afternoon sun. This shade could be provided by a structure, a wall, larger plants or  tree(s).
    Partial to full sun
    Watering Needs:
    Water needs: Moderate
    Needs regular watering - weekly, or more often in extreme heat.
  • History & Lore
    The Northern Lights azaleas were developed by the University of Minnesota Landscape Arboretum, bred for their extreme cold hardiness. The program developed its first commercially available seedlings in 1978 resulting from the original cross of R. prinophyllum and R. x kosteranum. The former species is an American species found from Main south to Virginia and west to Missouri. Golden Lights was developed from R. prinophyllum and a white flowered Exbury hybrid.
    Though these plants are typically listed as a genus azalea, there is no official genus by that name. They are all technically species and hybrids of genus Rhododendron.