False Indigo, Indigo Spires
Indigo Spires False Indigo (also known as Baptisia)
Baptisia australis ‘Indigo Spires’
Height: 3.5-4ft
Spread: 3.5ft
Zone: 4-9
Exposure: Full sun to part shade
Bloom Time/Color: May-June; purple shades
Uses: Specimen, massing, prairies
Maintenance: Low
Other: Rabbit resistant, cut flower
False indigo does extremely well in most soil conditions. Trifoliate, blue-green clover-like foliage is seen throughout the growing season and in spring; 'Indigo Spires’ plants are covered in tall, slender towers of dark purple pea-like flowers with yellow keels. Seed pods mature to a charcoal-black and add great texture to the landscape and to dried flower arrangements. False indigo grows best in average, well-drained soils in full sun to part shade but can tolerate poor, chalky, and droughty soils too. No major insect/disease issues. False indigo has a long tap root and does not like to be moved.
Baptisia australis is an Iowa native.
**Photos courtesy of Walters Gardens**