Lupinus diffusus

Photo by Shirley Denton. Photograph belongs to the photographer who allows use for FNPS purposes only. Please contact the photographer for all other uses.

Natural Range in Florida
USDA Zones

Suitable to grow in:
10A 10B 8A 8B 9A 9B 

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Sky Blue Lupine

Fabaceae (Leguminosae)

Plant Specifics

Size:2.5-3.5 ft tall by 1-3 ft wide
Life Span:Biennial
Flower Color:Blue, lavender
Fruit Color:Green
Phenology:Naturally sprouts in autumn and blooms the following year in mid-spring.


Recommended Uses:Wildflower garden where it can be used as a specimen plant.
Light: Full Sun
Moisture Tolerance:
always floodedextremely dry
Moisture Tolerance: Short very dry periods ----- to ----- Very long very dry periods
Salt Water Flooding Tolerance:Not salt tolerant of inundation by salty or brackish water.
Salt Spray Tolerance:Low/no tolerance of salty wind or direct salt spray



  • 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).