Plant Data Sheet
Photo courtesy PlantExplorers.com
Species (common name, Latin name)- seashore lupine, Lupinus littoralis
lupine occurs along the immediate coast and has a range that stretches from
Generally found at low elevations below 500 ft in areas with strong maritime influence.
seashore lupine is an infrequent occupant along the coast. It can be found in the coastal portions of Pacific,
Grays Harbor, Jefferson, Calallam,
Seashore Lupine prefers coastal beaches and dunes
Plant strategy type/successional stage (stress-tolerator, competitor,
weedy/colonizer, seral, late successional)
L. littoralis is an early seral colonizer of beaches and sand dunes. It can tolerate the harsh sand blasts and salt spray characteristic of this environment.
Seashore lupine can be found growing in conjunction with other beach colonizers such as Carex macrocephala, Poa macrantha, Glehnia leicarpa, and Polygonum paronychia.
May be collected as
Collection restrictions or guidelines
As with most lupines, seed collection should be carried out between July and August when the pods mature but before they shatter. Pods are mature when they turn a tan brown. Pods can also be collected slightly early if left attached to a portion of the stem and kept in a paper bag to mature.
Seeds have a hard but brittle seed coat that requires some scarification to produce abundant germination. Mechanical scarification can be done but should be done lightly as the seeds are easily crushed in grinders or other devices. A hot water bath is very effective and can be done by heating a pot of water to boiling then removing from heat. Seeds can then be added to the water and left till cool.
Seeds can be stored. Data on length of appropriate storage unavailable for this specific species. Other native lupine seeds can be stored for 20-60 years once cleaned and dried.
Recommended seed storage conditions
Lupine seeds generally have a higher moisture content and should be stored at 40 degrees Fahrenheit and 40% relative humidity. Cleaned and dried seeds should be refrigerated and stored in airtight containers.
Soil or medium requirements (inoculum necessary?)
Seashore lupine prefers moist but well drained sandy soils and will generally grow well in full sun. Inoculation with Rhizobium specific to Lupinus spp. can aid overall success particularly when working with a sterile planting soil.
Does not transplant well, seeds should be used. Seeds can be collected but are also commercially available.
Recommended planting density
No data found
Care requirements after installed (water weekly, water once etc.)
No Data found
Normal rate of growth or spread; lifespan
No Data found
Hitchcock, C. L. and A. Cronquist.
1973. Flora of the
Collecting, Processing and Germinating Seeds of Wildland Plants. Young and Young. Timber Press. 1986.
M.L. 1969. Plant Succession on the Sand Dunes of the
Ecology, Vol. 50, No. 4. pp. 695-704.
Skinner, David M. 2003. Propagation protocol for production of container Lupinus sericeus Dougl.
ex Lindl. plants;
Morris, Rich. “Lupinus
http://www.pfaf.org/database/plants.php?Lupinus+littoralis (accessed 12 April 2006)
Compiled by: Phillip Chi 4/13/2006