Paintbrush are difficult to grow, thus we have paired them with a host plant (Littleleaf Penstemon) as paintbrush is a hemiparasitic (partially parasitic) plant.
 
Type: Perennial, small sub-shrub
Sun: Full sun
Water Needs: Low, Average
Height: 1'-2'
Bloom Time:  June-September
Bloom Description: Pale yellow
Maintenance: 
Soil Drainage: Well-drained
Suggested Use: Does well in gravely soils. 
Comments: The roots of this plant will grow until they touch the roots of other plants, frequently grasses, penetrating these "host" roots to obtain a portion of their nutrients. Transplanting paintbrush may kill it.