Wake Robin
Trillium
Blooms in early spring; needs some winter chill. Each stem is topped with a whorl of three leaves; a s...
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Wake Robin
Trillium chloropetalum
Native to California.To 1–1 1/2 ft. high and 1 ft.wide, with 6-in.-long leaves mottledin maroon. Stalk...
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Wall Rockcress
Arabis caucasica
Native from the Mediterranean to Iran. Dependable old favorite. Forms mat of leaves to 6 in. high, 1 1...
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Wallflower
Erysimum
This genus swallowed up Cheiranthus, which included the old-fashioned biennial bedding-plant wallflowe...
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Wallflower
Erysimum insulare suffrutescens
Native to central and Southern California coasts. Woody-based growth 6–24 in. high, 4–12 in. wide, wit...
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Walnut
Walnut
Usually large and spreading; leaves are divided into many leaflets and have a featherlike appearance. ...
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Wasatch Maple
Acer saccharum grandidentatum
Grows as shrub or tree 20–30 ft. tall and wide. Leaves have three to five lobes and large, blunt...
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Washington Thorn
Crataegus phaenopyrum
Native to southeastern U.S. Moderate growth to 25 ft. with20-ft. spread. Graceful, openlimb structure....
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Watch Chain
Crassula mucosa
Leafy, branching, erect stems to 1 ft. high and wide, closely packed with tiny green leaves in four ro...
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Water Birch
Betula occidentalis
Native to stream banks from Alaska to Oregon, east to Colorado. Shrubby; usually grows 12 to 15 ft. ta...
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Water Gum
Tristaniopsis laurina
Slow-growing, rather formal-looking plant with conical, dense crown. To 10 ft. tall, 5 ft. wide at 8 y...
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Water Lily
Nymphaea
These aquatic perennials grow with their roots in submerged soil and their long-stalked leaves floatin...
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