Trichostemma lanatum, or Wooly Blue Curls is a fragrant 3 – 4’ shrub known for its showy flowers that bloom May-August. The flowers are royal blue, fuzzy, 12″ clusters and make excellent cut flowers. The foliage is like a wide resinous pine needle. Both the flower and foliage has a sweet fragrance like freshly cut cedar with a bouquet of lavender. Woolly Blue Curls is native to very dry slopes. This native needs full sun, good drainage, no water after established. Cold tolerant to 10 degrees with no foliage burn. It will burn to the ground at -5 F. but recover.
More of a problem is its need for perfect, absolutely perfect, drainage. If your soil has high organic matter, do not try this. Standing water will kill it, areas of much summer rain will kill it, soil amendment will kill it, and fertilizer will kill it. If you have clay soil, plant it so water cannot stand. It is native on sites that range from serpentine clay to gravel with a rainfall from 14- 35″. Plant in your soil, water well once/week indirectly (first year only), put a rock or boulder next to it and get ready for the flower show.