Species (common name, Latin
name)
Salix scouleriana (Scouler's
willow)
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Various forms of Salix scouleriana
(Scouler's willow). (4)
Range
S. scouleriana
grows from southern
Map of Salix scouleriana (Scouler's
willow) range. (2)
Climate, elevation
Grows from the lowlands and foothills to mid-montane elevations.
Local occurrence (where, how common)
Very Common in lowlands and
foothills to mid-montane elevations.
Habitat preferences
Montane coniferous forest.
Plant strategy type/successional
stage (stress-tolerator, competitor, weedy/colonizer,
seral, late successional)
Fast-growing colonizer that forms dense
thickets and a great competitor.
Associated species
Abies concolor, Achillea millefolium, Achnatherum occidentale ssp. Actaea rubra,Agrostis
stolonifera, Agastache urticifolia, Allium bisceptrum, Alnus incana, Alnus viridis
ssp. sinuata, Amelanchier alnifolia, Amelanchier utahensis, Aquilegia formosa, Artemisia arbuscula,
Arnica chamissonis, Arnica cordifolia,
Arnica fulgens, Balsamorhiza
sagittata, Bromus carinatus, Carex geyeri, Carex hoodii,
Camissonia tanacetifolia ssp. tanacetifolia, Cercocarpus ledifolius, Claytonia
perfoliata, Collomia grandiflora, Cornus sericea ssp. Sericea,
Danthonia californica, Deschampsia elongate, Dodecatheon
jeffreyi, Elymus elymoides, Epilobium ciliatum ssp. Watsonii,
Epilobium glaberrimum, Equisetum
arvense, Galium triflorum, Geranium richardsonii,
Hesperostipa comata ssp., Hordeum brachyantherum,
Hordeum jubatum, Hydrophyllum capitatum, Juniperus occidentalis, Linanthus harknessii, Lomatium triternatum, Lupinus caudatus,Lupinus leucophyllus, Melica bulbosa, Mimulus guttatus, Osmorhiza occidentalis, Pinus ponderosa, Populus balsamifera ssp. trichocarpa, Potentilla biennis, Polygonum douglasii, Potentilla glandulosa, Poa nervosa, Poa palustris, Populus tremuloides, Prunus emarginata, Prunus virginiana, Pseudoroegneria spicata, Ribes aureum, Ribes cereum,
Ribes lacustre, Rosa woodsii, Salix exigua, Salix geyeriana, Salix lemmonii, Salix lucida ssp. lasiandra, Scirpus microcarpus, Symphoricarpos albus, Symphoricarpos oreophilus, Symphoricarpos rotundifolius, Urtica dioica.
May be collected as: (seed, layered, divisions, etc.)
Seed, spring hardwood or summer softwood
stem cuttings. (1)
Collection restrictions or guidelines
Cuttings: Hardwood tip cuttings are collected before bud
break. Softwood cuttings can be taken any time after flowering. Store cuttings in moist refrigeration. (1)
Seeds: The most
critical factor in the collection of viable Salix seed is frequent observation
of catkin development. It might be
preferable to wait until the capsule are almost fully
open, but spring winds can disperse the seed very quickly once the capsules
reach this stage and much seed can be lost instantly. The female catkins should
be placed in paper sacks to capture seed as the capsules open during drying. Seed dispersal usually only takes a few days in a room with dry air
and normal working temperatures. If the number of catkins collected
forms a layer one or two catkins thick in the sack,
the seed will disperse easily without much oversight. If a thick layer of
catkins is placed in the sack, frequent turning and mixing of the sack will be
required to facilitate uniform drying and seed release. Collection in plastic
bags may be acceptable for very brief periods, but the catkins need to be
transferred to paper sacks or drying racks as soon as possible to prevent
moisture buildup and subsequent decomposition. (3)
Seed germination (needs dormancy breaking?)
Sow cleaned seeds immmediately.
Surface sow seeds. (3)
Seed life (can be stored, short shelf-life, long
shelf-life)
1-3 years
Recommended seed storage conditions
35º C
Propagation recommendations (plant seeds, vegetative
parts, cuttings, etc.)
See above
Soil or medium requirements (inoculum necessary?)
No inoculum necessary
Installation form (form, potential for successful
outcomes, cost)
Cuttings more effective and faster
establishing.
Recommended planting density
18”
Care requirements after installed (water weekly, water
once etc.)
Water weekly depending on weather and
plant size. Reduce watering
frequency in late September to early October to promote hardening-off. (3)
Normal rate of growth or spread; lifespan
Large shrub but often a small tree with a
single, upright trunk and round crown reaching up to 25 feet in height.
(4)
Sources cited
1. Wick, Dale; Luna,
2. USDA Plants
Database; accessed
3. Dreesen,
David. 2003. Propagation protocol for production of container Salix scouleriana Barratt plants
(One Gallon Tree Pot, 4”x4”x14”);
4. Dendrology fact
sheet at Virginia Tech; accessed
Data compiled by (student name and date)
Nick Ostrovsky