Proven winners for the West
UPRIGHT SHRUBS (FROM TALLEST TO SHORTEST)
'Tuscan Blue', 6 to 7 feet tall. Leaves are wider than average and very aromatic; dark blue flowers. Good shrub for many situations. "The workhorse of the industry," says David Fross of Native Sons Nursery (wholesale only), in Arroyo Grande, California.
'Blue Spires', 5 to 6 feet tall and 4 to 6 feet wide. Strong vertical habit; clear blue flowers. "It looks like a miniature Italian cypress," says landscape designer Christine Mulligan of Long Beach, California. "If you want a formal look, it's the best choice."
'Miss Jessup's Upright', 4 to 6 feet tall and about half as wide. Slender branches; pale blue flowers. Good choice for formal herb garden or confined spaces.
'Gorizia', 4 to 5 feet tall and nearly as wide. Stiffly upright and rather open form. Leaves are larger, longer, and brighter green than typical; pale blue flowers. Good specimen or accent plant. "Very architectural-looking," says Jeff Rosendale of Sierra Azul Nursery & Garden, in Watsonville, California.
'Golden Rain' ('Joyce DeBaggio'), 2 to 3 feet tall and as wide. Yellow gold leaves; dark blue flowers. Use for contrast against darker green foliage.
'Boule', 3 feet tall and wide. A new introduction from Native Sons, it forms a neat dome (boule means "ball" in French).
'Collingwood Ingram' ('Ingramii' or 'Benenden Blue'), 2 to 2 1/2 feet tall and 4 feet wide or wider. "Because it's always putting out new side growth, you never see woody trunk," says Mulligan. This habit makes it well suited for slopes (the garden shown on page 78 is a good example). This rosemary also mixes nicely with ceanothus, rockrose, and other drought-tolerant shrubs.
'Ken Taylor'. Similar to 'Collingwood Ingram' but slightly shorter and somewhat trailing. Showy dark blue flowers. Best on slopes. Sensitive to root rot.