Perennial (O)

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OENOTHERA berlandieri 'Siskiyou', Mexican Evening Primrose OENOTHERA berlandieri 'Siskiyou'
Mexican Evening Primrose

Perennial: Drought tolerant. Deer resistant. Fire retardant. Good border plant and ground cover. Nice for slopes and parking strips. Attracts butterflies. Bloom time: summer-fall. Bloom color: pink. Height: 8-18 inches. Spreads several feet. Exposure: sun. Water: moderate/dry. USDA Z7.

OENOTHERA berlandieri 'Twilight', Evening Primrose OENOTHERA berlandieri 'Twilight'
Evening Primrose

Perennial: Drought tolerant. Deer resistant. Fire retardant. Lavender-pink blooms contrast nicely against striking rich purple-bronze foliage. Good border container and ground cover plant. Nice for slopes and parking strips. Attracts butterflies. Bloom time: summer-fall. Bloom color: lavender-pink w/ yellow eye. Height: 12-18". Width: 18-24". Exposure: sun. Water: moderate/dry. USDA Z5-8. USPP#17,230

Photo unavailable OMPHALODES cappadocica
Navelwort

Perennial: Evergreen. Deer resistant. Good edging, woodland, ground cover & border plant. Slowly spreads by non-invasive rhizomes. Has forget-me-not like flowers in spring-summer (sometimes longer). Just darling! Attracts hummingbirds. Bloom color: bright blue. Size: 6-8" x 10". Exposure: part shade. Water: moist to moderate. USDA Z6-9.

Photo unavailable ORBEXILUM pedunculatum
Sampson's Snakeroot, Mountain Pea

Perennial: Semi-evergreen. Drought tolerant. Native to Southwest United States. Spreads by short rhizomes, forms a dense mat of glossy green foliage followed by clusters of blue-purple flowers summer-fall. Good groundcover for erosion control and dry or dappled shade. Irresistible to gophers and rabbits. Attracts butterflies. Height: 6-12". Spread: 2-3'. Exposure: sun/part shade. Water: dry. USDA Z2

ORIGANUM 'Kent Beauty' (O. rotundifolium 'Kent Beauty'), Oregano ORIGANUM 'Kent Beauty' (O. rotundifolium 'Kent Beauty')
Oregano

Subshrub: Drought tolerant. Deer resistant. Rock garden, container & border plant. Dried flowers can be used in arrangements. Has heart-shaped gray-green leaves-known for its foliage, not its flowers. Attracts butterfllies. Blooms: summer. Color: pink. Size: 8" x 12". Exposure: sun. Water: moderate. USDA Z8. (A hybrid of O. scabrum x rotundifolium).

ORIGANUM 'Santa Cruz', Ornamental Oregano ORIGANUM 'Santa Cruz'
Ornamental Oregano

Perennial: Drought tolerant. Deer resistant. A vigorous & spreading plant great for borders, beds, rock gardens & pots. A heavy bloomer with rosy pink blooms on 2' stems that are great for drying. Has culinary properties, but mainly grown for ornamental value. Re-seeds & seedlings vary slightly. Attracts bees and butterflies. 12-30" x 24". Sun. Water: mod. Hardy.

Photo unavailable ORIGANUM dictamnus
Crete Dittany or Dittany of Crete

Dwarf shrub: Evergreen. Drought tolerant. Deer resistant. Aromatic foliage with fruit in cone-like heads. Rock garden, cut flower, pot & hanging basket plant. Can use as a culinary herb but mostly used as an ornamental. Attracts bees, butterflies & insects. Blooms: summer. Color: pinkish purple. Size: 5-6" x 16". Exposure: sun. Water: moderate. USDA Z7.

Photo unavailable ORIGANUM laevigatum 'Hopley's'
Oregano

Perennial: Drought tolerant. Deer resistant. Nice rock garden, cut flower, container and border plant. Native to Turkey, Iran & Pakistan. Very showy and mild tasting. Attracts bees, butterflies and insects. Bloom time: spring-fall. Bloom color: dark purple. Height: 1 foot. Exposure: sun. Water: moderate/dry. USDA Z8.

ORIGANUM mircrophyllum x 'Dawn', ORIGANUM mircrophyllum x 'Dawn'

Believed to be a hybrid of O. mircrophyllum x O. vulgare 'Betty Rollins'. Nice mounding habit with bicolored blooms of dark purple and frosty mauve summer-fall. Attracts bees. Height: 2'. Width: 2.5'. Exposure: sun. Water: moderate.

Photo unavailable OSCULARIA deltoides (syn. LAMPRANTHUS deltoides)

Perennial: Evergreen. A great little shrubby succulent. Good plant for continers, to trail over a wall, to use in hanging baskets, or to use in a rock garden. Grayish-blue foliage. Bloom time: summer. Bloom color: pink. Size: 10" x 18". Exposure: sun. Water: moderate/dry (good drainage). USDA Z8.

OSTEOSPERMUM 'Margarita Orange Flare', Cape Daisy, African Daisy OSTEOSPERMUM 'Margarita Orange Flare'
Cape Daisy, African Daisy

The Margarita series is known for it's natural branching habit, uniformity and nice flower shape. Large 2-3" daisy-like flowers all season long on compact, mounding plants. Heat tolerant. Low maintenance. Excellent for containers or borders. Attracts butterflies. Bloom time: spring-fall. Bloom color: orange w/yellow center. Height: 10-14". Width: 10". Exposure: sun. Water: moderate.

OSTEOSPERMUM ecklonis 'Astra Pink Spoon', Cape Daisy OSTEOSPERMUM ecklonis 'Astra Pink Spoon'
Cape Daisy

Shrub: Evergreen. Drought, deer & coast tolerant. Good border, container & hanging basket plant. Flowers open in full sun & close at night. Blooming is reduced during summer heat. Blooms: summer-fall. Color: spoon-shaped soft pink petals. Attracts butterflies. Mounded growth habit, 12-18" x 18-24". Exposure: sun. Water: moderate/dry. USDA Z8

OSTEOSPERMUM ecklonis 'Astra Purple Spoon', Cape Daisy OSTEOSPERMUM ecklonis 'Astra Purple Spoon'
Cape Daisy

Shrub: Evergreen. Drought, deer & coast tolerant. Good border, container & hanging basket plant. Flowers open in full sun & close at night. Blooming is reduced during summer heat. Blooms: summer-fall. Color: spoon-shaped purple petals w/ blueish eye. Attracts butterflies. Mounded growth habit, 12-18" x 18-24". Exposure: sun. Water: moderate/dry. USDA Z8

OSTEOSPERMUM ecklonis 'Ostica Blue Eye', Cape Daisy, African Daisy OSTEOSPERMUM ecklonis 'Ostica Blue Eye'
Cape Daisy, African Daisy

Shrub: Evergreen. Drought, deer & coast tolerant. Good border, container & hanging basket plant. Flowers open in full sun & close at night. Blooming is reduced during summer heat. Blooms: summer-fall. Color: bright white w/ blue eye. Attracts butterflies. Mounded growth habit. Height: 12-15". Exposure: sun. Water: moderate/dry. USDA Z8

OSTEOSPERMUM ecklonis 'Ostica Bronze', Cape Daisy, African Daisy OSTEOSPERMUM ecklonis 'Ostica Bronze'
Cape Daisy, African Daisy

Shrub: Evergreen. Drought, deer, fire & coast tolerant. Compact, mound forming plants that are ideal for borders, pots & hanging baskets. Attracts butterflies. Has large, pretty bronze/purple flowers with a dark center that are perfect for early season color. Well branched growth habit. Height: 12-15". Exposure: full sun. Water: moderate/dry. USDA Z8.

Photo unavailable OSTEOSPERMUM ecklonis 'Ostica Burgundy'
Cape Daisy, African Daisy

Shrub: Evergreen. Drought, deer & coast tolerant. Good border, container & hanging basket plant. Flowers open in full sun & close at night. Blooming is reduced during summer heat. Blooms: summer-fall. Color: magenta-purple. Attracts butterflies. Mounded growth habit. Height: 12-15". Exposure: sun. Water: moderate/dry. USDA Z8

Photo unavailable OSTEOSPERMUM ecklonis 'Ostica Magma'
Cape Daisy, African Daisy

Shrub: Evergreen. Drought, deer & coast tolerant. The Ostica series feature vibrant & colorful flowers. It has a lovely compact mounded growth habit & are easy-growing plus early-flowering. Requires no cooling to flower. Good border, container & hanging basket plant. Flowers open in full sun & close at night. Blms: summer-fall. Exceptionally large flowers. Color: deep reddish-purple w/blue eye. Attracts butterflies. Ht: 12-24". Width: 24". Exp.: sun. Water: mod./dry. USDA Z8

OSTEOSPERMUM ecklonis 'Ostica Pineapple', Cape Daisy, African Daisy OSTEOSPERMUM ecklonis 'Ostica Pineapple'
Cape Daisy, African Daisy

Shrub: Evergreen. Drought, deer & coast tolerant. Good border, container & hanging basket plant. Flowers open in full sun & close at night. Blooming is reduced during summer heat. Blooms: summer-fall. Color: pineapple yellow w/ yellow eye. Attracts butterflies. Mounded growth habit. Height: 12-15". Exposure: sun. Water: moderate/dry. USDA Z8.

OSTEOSPERMUM ecklonis 'Ostica Pink Improved', Cape Daisy, African Daisy OSTEOSPERMUM ecklonis 'Ostica Pink Improved'
Cape Daisy, African Daisy

Shrub: Evergreen. Drought, deer & coast tolerant. Good border, container & hanging basket plant. Flowers open in full sun & close at night. Blooming is reduced during summer heat. Blooms: summer-fall. Color: soft pink. Attracts butterflies. Mounded growth habit. Height: 12-15". Exposure: sun. Water: moderate/dry. USDA Z8

OSTEOSPERMUM hybrid 'Soprano® Purple', Cape Daisy, African Daisy OSTEOSPERMUM hybrid 'Soprano® Purple'
Cape Daisy, African Daisy

Daisy flowers all season on compact, mounding plants; good early spring and fall plant; low maintenance; nice fall Interest; deadheading not necessary; good in containers & hanging baskets. Height: 8-14" Bloom time: spring-fall. Bloom color: purple. Water: moderate. Exposure: sun/part shade USDA Z9. PP# 15491

OSTEOSPERMUM hybrid 'Soprano® White', Cape Daisy OSTEOSPERMUM hybrid 'Soprano® White'
Cape Daisy

Perennial: Evergreen. Drought, deer & coast tolerant. Compact, mound forming plants that are ideal for borders, pots, hanging baskets & mixed plantings. Has white flowers w/blue centers that are perfect for early season color. Long flowering season from spring-frost. Attracts butterflies. Exposure: full sun. Water: moderate/dry. USDA Z9-11. (PPAF)

OSTEOSPERMUM x hybrida Blazing Daisy 'Sunset Orange', Cape Daisy OSTEOSPERMUM x hybrida Blazing Daisy 'Sunset Orange'
Cape Daisy

Shrub: Evergreen. Drought, deer & coast tolerant. Very heat tolerant. They flower continuously all summer, even in hot climates. Mounding growth makes them excellent for baskets, pots & beds. No deading necessary. Attracts butterflies. Bloom time: spring-fall. Bloom color: orange w/purple eye. Height: 6-18". Spread: 12-18". Exposure: sun. Water: moderate. USDA Z9.

OTHONNA 'Little Pickles', Iceplant OTHONNA 'Little Pickles'
Iceplant

Bluish-green succulent (baby gerkins, wee green banana like) leaves with dollhouse-sized sunflowers that are bright yellow. The foliage is only two or three inches tall, the flowers raise up on short stems to as high as four inches. Requires full sun.

Photo unavailable OTHONNA capensis
Iceplant, Little Pickles

Perennial: Evergreen. A moderately slow-growing succulent w/bluish-green (baby gerkins, wee green banana like) leaves. Dollhouse-sized sunflowers that are bright yellow appear spring-fall & rise up to 2" above the foliage. Grows in dense clumps to not much more than 4" tall & spreads to about 1-2' wide. Foliage often blushes a purple red when drought stressed. Use in garden beds or containers. Needs good drainage & full sun. USDA Z6.

OXALIS 'Plum Crazy', Shamrock, Sorrel OXALIS 'Plum Crazy'
Shamrock, Sorrel

Bushy Perennial: Drought & deer tolerant. Extra vigorous & great in mixed pots. Self-cleaning, no deadheading needed. Pink, fuschia and green, variegated foliage. Great for borders, containers & hanging baskets. Attracts butterflies. Bloom time: summer-fall. Bloom color: bright yellow. Size: 6-10" x 10-12". Exposure: sun/part shade. Water: moderate. USDA Z8.

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