Common name: Pacific silverweed
It is less common in its northern range. (3)
Pacific silverweed grows in wet temperate climates
· moderate rainfall
· common at mid to low elevations (3)
It can commonly be found in coastal wetland areas.
Occasionally it can be found inland. (6)
The Pacific silverweed prefers sunny coastal dunes to marsh edges, sandy bluffs, wetland meadows and mudflats. (2,4)
Plant strategy type/successional stage
Tolerates shade and wetland conditions.
Pacific silverweed is a good competitor, and has a tendency to become weedy. (3)
(rushes), Carex spp. (sedges), Scirpus spp. (bulrushes),
May be collected as: (seed, layered, divisions, etc.)
The plant may be collected as seed or divisions.
Collection restrictions or guidelines
No dormancy breaking is necessary.
Seed life (can be stored, short shelf-life, long shelf-life)
May be stored short term. Information on long term storage was not found in the available literature.
Recommended seed storage conditions
Store cleaned in a dry location at room temperature. (5)
Conflicting recommendations exist for what time of year seeds should be sown. One source recommends sowing in mid-winter (7), while another suggests early spring or autumn.
Seeds should be sown outdoors in a coldframe, covered containers or an unheated greenhouse.
When large enough, transplant into individual pots and move into a greenhouse for the winter. Plant in late winter or early spring, after the risk of freezing temperatures is past. (6,7)
Divisions may be planted right away if they are large enough. Smaller divisions should be potted up and grown in light shade in a cold frame until they are established. (6)
Soil or medium requirements
Requires moist well-drained soil.
Prefers alkaline but tolerates a slightly acidic soil. (6)
Installation form (form, potential for successful outcomes, cost)
Plants must be installed when fairly developed. Small plantlets and smaller divisions will likely fail.
Install after the last frost. (6)
Recommended planting density
Not in literature.
Care requirements after installed (water weekly, water once etc.)
Do not allow soil to dry out.
Normal rate of growth or spread; lifespan
Short lifespan, rapid growth (may become invasive) (3,7)
Hitchcock, C. Leo
and Cronquist, Arthur. Flora of the
Pojar, Jim, Mackinnon, Andy. Plants of the
Kruckeberg, A.R. Gardening
with Native Plants.
8. www.nws.usace.army.mil/publicmenu/ DOCUMENTS/Codiga_Baseline_Monitoring.pdf