Concha ceanothus is a medium to large mounding shrub with arching stems and a mounding habit, 6-9 ft. tall, 8-12 ft. wide. Its narrow leaves grow to 1 in. long, 3/8 in. wide, are dark glossy green and heavily wrinkled. Very showy flowers are dark cobalt-blue and occur in numerous tight round clusters in late winter to early spring.
Concha ceanothus is one of the most striking California native flowering accent plants for garden and landscape use in the Inland Empire. It shows good tolerance to sun and heat and will bloom profusely following normal winter rains. Its deep flower color has made it a popular choice for planting in sunny areas in coast live oak and western sycamore gardens. It is used in background areas and for screening where its seasonal flower display transforms it into a focal feature. It shows a greater adaptation to heavy soils than other Ceanothus, but good drainage and careful summer watering is always important.