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Impatiens pallida

Pale Jewelweed
Scientific Name
Impatiens pallida

Family
Balsaminaceae

[top]Description

This native plant is a summer annual about 3-6' tall, branching frequently.

[top]Leaves

The alternate leaves are up to 4" long and 2" across. They are ovate, hairless, and serrated along the margins; their slender petioles are up to 2" long.

[top]Flowers

Each flower is about 11" long, consisting of 5 petals, 3 sepals, and reproductive organs within the tubular corolla. This corolla is yellow, or less often cream-colored, and consists of the fusion (or near fusion) of the 5 petals and lower sepal.

[top]Fruit

Each fertilized flower is replaced by an ellipsoid seedpod up to 2" long. This seedpod is broadest toward the middle, tapering toward its tips; it has several dark green lines along its length. As the seedpod ripens, it splits open and ejects the seeds.

[top]Range

Ontario east to Nova Scotia, south to Georgia, west to Oklahoma, and north to North Dakota.

[top]Habitat

Wet woods and meadows; often on mountainsides in wet, shady, limestone or neutral sites.

[top]Wildlife Value

The nectar of the flowers attracts the Ruby-Throated Hummingbird and bumblebees; the latter are especially common visitors. The caterpillars of various moths feed on the foliage, including Euchlaena obtusaria (Obtuse Euchlaena), Spilosoma latipennis (Pink-Legged Tiger Moth), Trichodezia albovittata (White-Striped Black), and Xanthorhoe lacustrata (Toothed Brown Carpet). The large seeds are eaten by various gamebirds, including the Ruffed Grouse, Ring-Necked Pheasant, Greater Prairie Chicken, and Bobwhite Quail. The White-Footed Mouse also eats the seeds. White-Tail Deer browse on the foliage.

[top]Toxicity

none

[top]Cultural Requirements

The preference is partial sun, wet to moist conditions, and soil that is loamy or mucky. Yellow Jewelweed also tolerates full sun, light shade, and mesic conditions (if it receives some protection from the afternoon sun). This species is a little more tolerant of dry conditions than Impatiens capensis (Orange Jewelweed). It grows rapidly from seed during the summer and can achieve an impressive size.

[top]Pests and Diseases

none

[top]Propagation

Moist, rich, well-drained woodland soil

Simple sowing in the summer or fall. The pale jewelweed is not as tolerant of harsh, sunny conditions as is the spotted jewelweed. Freely self-seeds.

[top]Comments

Yellow Jewelweed is closely related to the more common Impatiens capensis (Orange Jewelweed). It is very similar in appearance to the latter species, except that its flowers are yellow, rather than orange. The tubular corolla of Yellow Jewelweed is broader toward its posterior, and its 2 lower petals are divided at the base, rather than fused together. Both of these Jewelweeds have attractive foliage and large interesting flowers that bloom over an extended period of time.

[top]References

http://plants.usda.gov/core/profile?symbol=IMPA


Attached Images
File Type: jpg impatiens_pallida.jpg (63.2 KB, 5 views)

Created by silverclaw, 06-12-2014 at 08:59 AM
Last comment by dapjwy on 06-12-2014 at 10:08 AM
1 Comments, 273 Views

Tags
impatiens, impatiens pallida, jewelweed, pale, pallida
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