Indigofera

Scientific Name:
Indigofera tinctoria (common indigo) or Indigofera kirilowii (Korean indigo), among other species

Common Names:
Indigo, True indigo, Korean indigo, Indigo bush

Lighting Requirements:
Full sun to partial shade

Height:
2-4 feet for smaller species; some species can grow up to 6 feet 

Width:
2-4 feet 

Seasonal Interest:
Blooms in late spring to early summer with clusters of pink, purple, or blue flowers; attractive foliage

Winter Look:
Dormant; some species may lose their leaves, while others retain them in milder climates

Drought Tolerance:
Moderate

Deer Resistance:
Moderate (I've seen them eat these plants)

Attracts:
Bees, butterflies

Hardiness Zones:
Zones 6-9 (depending on species)

Soil Requirements:
Well-drained soil; tolerates poor and sandy soils

pH Range:
6.0 - 7.5 (slightly acidic to neutral)

Native To:
Asia, Africa, and parts of the Americas, depending on the species

Potential Disease Issues:
Generally pest-resistant; can occasionally face leaf spot or root rot in poorly drained soil

Notes:

I'm more familiar with  Indigofera kirilowii. It seems to be a heavy feeder in my soil. I had a client years ago who had multiple Indigoferas in her front beds. She had to protect them from the deer.