Nomenclature

Common Name:

sky blue lupine

Synonym(s):

Genus species:

Lupinus diffusus

Family:

Fabaceae (Leguminosae)

Plant Specifics

Form:

flower

Size:

2.5-3.5 ft tall by 1-3 ft wide

Life Span:

Long-lived perennial

Flower Color:

blue, lavender

Fruit Color:

green

Phenology:

Naturally sprouts in autumn and blooms the following year in mid-spring.

Noted For:

Showy Flowers, Showy Fruits, Interesting Foliage

Landscaping

Recommended Uses:

Wildflower garden where it can be used as a specimen plant.

Considerations:

Hard to establish. Biennial, though may reseed.

Availability:

Seed

Propagation:

Seed. Known to be difficult to transplant especially if roots are disturbed.

Light:

Full Sun

Moisture Tolerance:

Always Flooded------------------------------------------------Extremely Dry

Coming Soon!

Short very dry periods ---to--- 1Stays wet

Salt Water Flooding Tolerance:

Unknown

Salt Spray/Salty Soil Tolerance:

Low/no tolerance of salty wind or direct salt spray

Soil or Other Substrate:

Sand

Soil pH:

acidic

Suitable to Grow In:

8A,8B,9A,9B,10A,10B

Ecology

Wildlife:

Pollinators, Caterpillars



  • Larval host for  frosted elfin ( Callophyris irus ) butterfly, which is listed as  Endangered in Florida. 


  • Also larval host for gray hairstreak ( Strymon melinis ) butterfly,  Genista broom moth ( Uresiphita reversalis )a nd other butterflies and moths that use members of the Fabaceae family ( FNPS blog ).


  • Attracts bees including bumblebees.  Documented visitors include  Anthidiellum notatum rufimaculatum, A. perplexum, Megachile exilis parexilis, Osmia sp. and Bombus griseocollis (Deyrup et al. 2002).


Native Habitats:

Natural Range in Florida:

Comments:

Ethnobotany:

General Comments:

Given that this is short-lived (biennial) and difficult to transplant or grow from seed, this is perhaps best encouraged in places where it grows naturally.  Minimizing competition from other plants, and perhaps burning the garden area, may be useful.  This plant appears to have a seedbank with seeds that may sprout over an extended period of years if conditions are right.



The range of this plant in Florida appears to be disjunct though how much of this is due to site conditions and how much could be an artifact of forestry practices is unknown.