The silver bush lupine grows into a rounded shrub growing ft. tall with silky gray-green leaves. Blue to purple flowers grow on in. long spikes from early to late spring. This highly adaptable California native lupine occurs across much of our state in grassland, foothill, valley and desert habitats where it is appreciated Silver bush lupine Read More»Estimated Reading Time: 2 mins.
Start pruning a lupine when about 70 percent of the flowers on its primary stem have died. This technique, known as deadheading, encourages the plant to keep blooming.
This technique, known as deadheading, encourages the plant to keep blooming. Silver bush lupine is a drought-tolerant plant that grows well in hot, sunny areas with little rain. Give the plant about 1 inch of water per week during the seedling stage. When mature, silver. Silver bush lupine thrives on near-vertical eroding south-facing cliffs. (Photos courtesy of Maureen Gilmer) Shades of dark indigo to medium azure top the foliage with dozens of standup flower stalks.
They are long-lasting and will produce pea pods filled with seed that can be used to start new plants. Silver lupine, white-leaf bush lupine, or evergreen lupine, is a perennial species native to California, Oregon, and northern Baja. It grows along the coast, foothills of the Sierras and into the mountains, in dry and open meadows, prairies and forest clearings.
It is a member of several plant communities, including coastal sage scrub.