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The dense spires of deep blue flowers of Wild Lupine are a favourite in late spring and early summer.
The palm-shaped leaves that surround are also very attractive making Lupinus perennis a great choice for gardens or restorations with
dry to sandy soils. Caterpillars of the endangered Karner Blue butterfly feed exclusively on Lupinus perennis and
Wild Lupine is also a host plant for the Frosted Elfin and the Eastern Persius Duskywing butterflies.
After it flowers, when its seeds are ripe, the seedpods explode scattering the seeds, which songbirds love to feed on.
Attracts Butterflies, Honeybees & Hummingbirds!
Makes Great Cut Flowers!
Seed needs scarification and cold, moist stratification. Start at least 5 weeks before outdoor night temperatures
are reliably in the 10 C (50 F) range. Scarify seed by rubbing between two sheets of sandpaper to scrape seed coat.
Then mix the seed with a slightly moistened, sterile, soil-less growing mix. Put this in a labelled, sealed plastic
bag and store in a refrigerator for one day. The next day place this in the freezer for one day. Repeat this for
one week, alternating between the fridge and the freezer. After stratifying, plant seed 0.64 cm (1/4 inch) deep in
pots. Keep moist but not soggy and very warm (21 C - 70 F). When seedlings are 5 cm (2 inches) tall or more, transplant
into the garden spaced 30 cm (1 foot) apart.
Scarify seed by rubbing between two sheets of sandpaper to scrape seed coat. Then plant seed 0.64 cm (1/4 inch) deep in a
prepared seed bed in late fall so that the seed overwinters and germinates naturally in spring.
In late fall through to mid-winter fill plastic pots with a slightly moistened, sterile, soil-less growing mix. Scarify seed by
rubbing between two sheets of sandpaper to scrape seed coat. Then plant seed 0.64 cm (1/4 inch) deep in pots and label the pots.
Place them outdoors in an area where they will experience the snow and cold of winter. The seed will germinate in the pots in
spring as the weather warms up. Be sure to water the pots regularly in spring and once the plants are 5 cm (2 inches) tall,
transplant them into your garden.