Ocimum basilicum
Sow seeds in early spring. Grows best in full sun in moderately rich and well-drained soil kept well watered. Space large-leafed cultivars (such as 'Thai Magic') 1 1/2' apart and mulch to retain moisture. Pinch out centers to encourage bushy ... [... more]
Missouri Botanical Garden |
Oenanthe javanica 'Flamingo'
Grow in average to wet soil in part shade to full shade. Spreads rapidly and can be invasive, particularly in rich, moist soils. Oenanthe (sometimes commonly called flamingo plant) is a low-growing ground cover which typically grows 9-16" tall. ... [... more]
Missouri Botanical Garden |
Oenothera fremontii 'Lemon Silver'
This evening primrose cultivar is a nearly stemless perennial which typically grows in a loose, spreading clump to 6" tall and 12" wide. Features silvery, linear, lance-shaped leaves (to 2" long) and 4-petaled, lemon yellow flowers (to 2& [... more]
Missouri Botanical Garden |
Oenothera fruticosa 'Fyrverkeri'
Easily grown in average to moderately fertile, dry to medium moisture, well-drained soils in full sun. Prefers good summer heat and dryish soils. Tolerates poor soils and light shade. If plant foliage depreciates in summer after flowering, stems ... [... more]
Missouri Botanical Garden |
Oenothera fruticosa subsp. glauca
This sundrops is an erect, day-flowering member of the evening primrose family. It is a short-lived perennial (sometimes biennial) that is native to eastern North America. It typically grows 20-30" tall and produces yellow flowers in summer. O. ... [... more]
Missouri Botanical Garden |
Oenothera 'Innoeno131' LEMON DROP
LEMON DROP is a compact, erect, day-flowering member of the evening primrose family. It typically grows 8-12" tall and produces four-petaled lemon yellow flowers over a long summer bloom. Beds and borders. Foliage will form an attractive ground ... [... more]
Missouri Botanical Garden |
Oenothera kunthiana
This evening primrose (sometimes commonly called Kunth's evening primrose) is a low-growing, sometimes prostrate, perennial which grows on generally reclining stems to 20" tall. Four-petaled, white flowers (to 1.5") that fade to light pink with [... more]
Missouri Botanical Garden |
Oenothera 'Lemon Sunset'
This evening primrose cultivar is an erect, leafy-stemmed perennial which typically grows 36-40" tall. Features 4-petaled, cup-shaped, lemon yellow flowers (to 4") which, as the cultivar name suggests, acquire the reddish tints of a sunset as .. [... more]
Missouri Botanical Garden |
Oenothera macrocarpa
Missouri evening primrose is a sprawling, Missouri native plant which occurs on limestone glades and bluffs and rocky prairies in the Ozark region south of the Missouri River. Typically grows 6-12" tall and features very large (3-5" across), ... [... more]
Missouri Botanical Garden |
Omphalodes cappadocica 'Starry Eyes'
A tufted perennial with a bushy, creeping habit growing 6-8" high which features thick clumps of ovate to lanceolate leaves and sprays of forget-me-not-like, 5-petaled, 1/3" diameter flowers in loose racemes rising above the foliage in late ... [... more]
Missouri Botanical Garden |
Onoclea sensibilis
Sensitive fern is a large, somewhat coarse, Missouri native, deciduous fern which occurs statewide in wet woods and thickets and in moist soils along streams and springs. Grows up to 4' tall. Features long-stalked, deeply pinnatifid, bright ... [... more]
Missouri Botanical Garden |
Onosmodium molle
Eastern and southern United States Creamy white to yellowish green False gromwell is the common name usually applied to plants in this genus because of a perceived similarity in appearance to some of the gromwells (Lithospermum). This species is ... [... more]
Missouri Botanical Garden |
