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Elaeagnus commutata Observations
(wolf willow)
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Introduction to the NPN Native Species Observation Program
Wolf willow is a silvery shrub, usually under 2 m tall, with rusty colored twigs, that prefers the moist edges of prairies, dry hillsides and open fields in aspen forests. Leaves are oval-shaped (3-8 cm long) and have a distinct silvery-green color. Wolf willow flowers are small, yellow on the inside and silvery on the outside. They produce a strong musky-sweet smell. Berries are a dry silvery color, with a relatively large, stony seed.
Source: Plantwatch Canada
You should record when five well-defined phenological events occur for wolf willow:
- Beginning of flowering, first flowers open (BF) is the date when in at least three places on the plant the first flowers have opened completely.
- Sprouting of leaves (SL) is the date when the buds begin to burst open in at least three places on the plant under observation. The first green is visible on the young spring shoots and the first scales may fall off the buds.
- Beginning of the unfolding of leaves, first leaf surfaces visible (UL) is the date when in at least three places on the plant under observation first leaves have pushed themselves completely out of the bud or leaf sheath. The leaves have unfolded completely, so that the leaf stalk or leaf base is visible (sometimes only recognizable by bending back the young leaf). At this point, the individual leaf has taken its ultimate form, but has not yet reached its final size.
- Fruit ripe (FR) is the date when in at least three places on the plant under observation, the fruit shows the coloring characteristics of the plant variety (i.e., is ripe), and can be easily removed (i.e., is ready to fall from the plant).
- Coloring of leaves (CL) is the date when approximately 50% of the leaves (including those that have fallen to the ground) have taken on the colors of autumn.
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Please record average dates for each event among multiple plants of the same species. Report by email if any plant appears in poor health or event dates for same-species plants vary by more than a few days.
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