Crater Lake Rhododendron
Rhododendron ‘Crater Lake’ | R. augustinii ‘Barto Blue’ x ‘Bluebird’
Plant DetailsÂ
USDA Plant Hardiness Zones: 7a-8b in hot-summer climates | 7a-9b in cool-summer climates Find Your ZoneÂ
Plant Type:Â Evergreen Flowering Shrub
Height at Maturity:Â 5-6′
Width at Maturity:Â 4-5′
Spacing:Â 3-4′ for solid hedges; 7′ for space between plants
Flower Color: Â Blue with Violet-Blue
Flower Size:Â Large, 2″
Flowering Period:Â Mid Spring
Flower Type:Â Single
Fragrant Flowers:Â No
Foliage Color:Â Bronze new leaves mature to Gray-Green
Fragrant Foliage:Â No
Berries:Â No
Berry Color:Â NA
Sun Needs:Â Full Sun in cool-summer climates, Morning Sun with Afternoon Shade or All Day Filtered Sun in hot-summer climates
Water Needs:Â Average
Soil Type:Â Clay (well-draining), Loam, Sandy, Silt
Soil Moisture / Drainage:Â Moist But Well Drained
Soil pH:Â 5.0 – 6.0 (Acid)
Maintenance / Care:Â Low
Attracts:Â Butterflies, Visual Attention
Resistances:Â Cold Temperatures (0F), Disease, Heat, Humidity, Insect, Full Sun in cool-summer climates
Description
Incredibly eye-catching in bloom and sure to be a conversation piece in the garden, ‘Crater Lake’ is a small-leaved evergreen Rhododendron featuring loads of showy flowers with ruffled violet-blue petals surrounding a whisker-like cluster of contrasting white stamens. In mid-spring, the flowers form in clusters of 3 at the ends of almost every stem on the plant, standing out nicely against the gray-green evergreen foliage. At 5 to 6 feet tall and 4 to 5 feet wide, Crater Lake is a good fit as a specimen in smaller garden spaces or groupings or as a natural hedge where space allows. Perfect for partially shaded landscape and woodland borders or home foundation plantings.Â
Landscape & Garden Uses
An upright grower 5 to 6 feet tall and 4 to 5 feet wide, the Crater Lake Rhododendron is ideal for use as a specimen in smaller spaces or in groupings or as a colorful natural hedge in partially shaded landscape and woodland borders. A fine evergreen accent or grouping in home foundations and around patios and other outdoor sitting and living spaces. As with other evergreen rhododendrons, it does especially well on fertile embankments, hillsides, and slopes. Can be grown in large pots. Though it will tolerate full sun in cool-summer climates, we always suggest some filtered sun or shade during the hottest midafternoon hours in hot-summer climates. A fine addition to blue or purple theme gardens, rhododendron and azalea gardens, Asian or Zen gardens, and woodland gardens.
Suggested Spacing:Â 3 to 4 feet apart for solid hedges;Â 7 feet or more apart for space between plants
Growing Preferences
A little good advice goes a long way to successfully grow Rhododendrons. Rhododendrons are easy to grow and care for when planted correctly and in the right spot.Â
Rhododendrons thrive in a moist but well-drained acidic soil that is rich in organic matter and part shade, preferably morning sun with afternoon shade or heavily filtered sun. All-day dappled shade is fine as well. Keep in mind that whether growing in the ground or in containers, constantly soggy or wet soil is problematic for Rhododendrons, and most other plants for that matter. Some soils, such as heavy clay, quick-draining sand, or otherwise poor soils, might need to be amended to provide sufficient nutrients, better soil drainage, and/or moisture retention. In containers, select a pot with a drainage hole(s) and use a 50/50 blend of professional potting mix and potting soil. Avoid using any native soil in pots. Feed Rhododendrons after they bloom with an acid-loving formula such as an Azalea, Camellia, and Rhododendron Food.
Helpful Articles
Click on a link below for helpful advice from our experts on planting and caring for Rhododendrons.
How To Plant A Rhododendron
How To Fertilize & Water A Rhododendron
How To Prune A Rhododendron
Plant Long & Prosper!
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