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PlantFiles: Rhodora
Rhododendron canadense

 
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Family: Ericaceae (er-ek-AY-see-ee) (Info)
Genus: Rhododendron (roh-do-DEN-dron) (Info)
Species: canadense (ka-na-DEN-see) (Info)

Synonym:Azalea canadensis
Synonym:Rhodora canadensis

» View all varieties of Azaleas and Rhododendrons

3 members have or want this plant for trade.

Category:
Shrubs

Height:
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

Spacing:
18-24 in. (45-60 cm)

Hardiness:
USDA Zone 2a: to -45.5 °C (-50 °F)
USDA Zone 2b: to -42.7 °C (-45 °F)
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)

Sun Exposure:
Light Shade

Danger:
All parts of plant are poisonous if ingested

Bloom Color:
Magenta (Pink-Purple)
Fuchsia (Red-Purple)

Bloom Time:
Late Spring/Early Summer

Foliage:
Deciduous

Other details:
Requires consistently moist soil; do not let dry out between waterings
Very high moisture needs; suitable for bogs and water gardens

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information:
Non-patented

Propagation Methods:
From semi-hardwood cuttings
From hardwood cuttings

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

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Profile:

No positives
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorComment
Neutral Joan On May 31, 2009, Joan from Belfield, ND (Zone 4a) wrote:


Editor's Note

Some resources list all parts of Rododendrons and Azaleas as poisonous if ingested.

The toxic principal is Andromedotoxin, and symptoms include Salivation, watering of eyes and nose, abdominal pain, loss of energy, depression, nausea and vomiting, diarrhea, weakness, difficult breathing, progressive paralysis of arms and legs, coma.

We tend to err on the side of caution in PlantFiles, and the danger notation in the details above is to caution gardeners, parents and pet owners to look further for more information.
Neutral watersedge On Apr 12, 2007, watersedge from Northeast Harbor, ME wrote:

This plant grows all over the place up here. As described, it does like wet, boggy sites and a lot of sun.

Regional...

This plant has been said to grow in the following regions:

Northeast Harbor, Maine
Morristown, New Jersey
Redmond, Washington



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