Oenothera Missouriensis - Evening Primrose - 3ltr Perennial
Oenothera missouriensis - Evening Primrose - Flowers June/Aug. Flowers are short-lived, borne during the summer and have 4 delicate petals of deep yellow. Prefers an open, sunny location and will tolerate dry conditions.
Olearia haastii - Daisy Bush. - Evergreen bushy dense shrub good for hedging fragrant daisy-like white flowers from mid to late summer.
Olearia macrodonta - Daisy Bush New Zealand. - Vigorous evergreen upright shrub often tree-like. Frost hardy. Has holly shaped sharply toothed grey green leaves silvery white beneath. Large heads of fragrant white flowers appear in early summer. Ht 6m. Spread 5m. Full sun
Ophiopogon plan Niger - - 3ltr Perennial
Oregano Origanum - Oregano, marjoram - Much loved herb very aromatic used in stews. Especially good with lamb.
Osmanthus delavayii - - Evergreen rounded bushy shrub with arching branches. Has small glossy dark green leaves and a profusion of very fragrant tubular white flowers from mid- to late spring. Requires full sun and well drained soil. Height 7m.
Osmanthus heterophyllus - Holly Osmanthus. - Slow growing shrub with holly-like leaves.Small white flowers, ultimate height and spread approx 15 feet. Excellent hedger.
Osmanthus heterophyllus variegata - Holly Osmanthus. - An attractive slow growing holly like shrub with evergreen creamy green variegated leaves. It produces scented white flowers in autumn. Plant in sunny position for best effect.
Osmanthus x burkwoodii - - Evergreen rounded dense shrub. Glossy foliage is dark green and sets off a profusion of small very fragrant white flowers from mid to late spring. Requires full sun and well drained soil. Height 3 metres. Spread 3 metres.
Osmarea burkwoodii - - A compact evergreen shrub which grows to about 5ft. high. Lustrous green leaves. Very fragrant white flowers April and May. Plant in a sunny position.
Oxalis - Wood sorrel - Forms a small mound up to 8cm high. Very attractive leaves and open purple-pink flowers with darker centres from late spring to early summer. Easily grown in moist leafy soil in shade.
Oxalis Magellanica - - 9cm Perennial
Oxalis triangularis - Shamrock - 3ltr Perennial
Oxalis triangularis - Shamrock - Hardy, highly invasive woodland plant with 3-lobed leaflets. Flowers are solitary and borne in the spring. Likes moist soil sun or partial shade.
Ozothamnus ros. Silver Jubilee - Helichrysum. - Evergreen upright dense shrub with woolly white shoots and narrow dark green leaves. Clusters of fragrant white flower heads open in early summer. Requires full sun and well drained soil. Height 1.7m. Spread 1.5m.
Oenothera missouriensis - Evening Primrose - Flowers June/Aug. Flowers are short-lived, borne during the summer and have 4 delicate petals of deep yellow. Prefers an open, sunny location and will tolerate dry conditions.
Olearia haastii - Daisy Bush. - Evergreen bushy dense shrub good for hedging fragrant daisy-like white flowers from mid to late summer.
Olearia macrodonta - Daisy Bush New Zealand. - Vigorous evergreen upright shrub often tree-like. Frost hardy. Has holly shaped sharply toothed grey green leaves silvery white beneath. Large heads of fragrant white flowers appear in early summer. Ht 6m. Spread 5m. Full sun
Ophiopogon plan Niger - - 3ltr Perennial
Oregano Origanum - Oregano, marjoram - Much loved herb very aromatic used in stews. Especially good with lamb.
Osmanthus delavayii - - Evergreen rounded bushy shrub with arching branches. Has small glossy dark green leaves and a profusion of very fragrant tubular white flowers from mid- to late spring. Requires full sun and well drained soil. Height 7m.
Osmanthus heterophyllus - Holly Osmanthus. - Slow growing shrub with holly-like leaves.Small white flowers, ultimate height and spread approx 15 feet. Excellent hedger.
Osmanthus heterophyllus variegata - Holly Osmanthus. - An attractive slow growing holly like shrub with evergreen creamy green variegated leaves. It produces scented white flowers in autumn. Plant in sunny position for best effect.
Osmanthus x burkwoodii - - Evergreen rounded dense shrub. Glossy foliage is dark green and sets off a profusion of small very fragrant white flowers from mid to late spring. Requires full sun and well drained soil. Height 3 metres. Spread 3 metres.
Osmarea burkwoodii - - A compact evergreen shrub which grows to about 5ft. high. Lustrous green leaves. Very fragrant white flowers April and May. Plant in a sunny position.
Oxalis - Wood sorrel - Forms a small mound up to 8cm high. Very attractive leaves and open purple-pink flowers with darker centres from late spring to early summer. Easily grown in moist leafy soil in shade.
Oxalis Magellanica - - 9cm Perennial
Oxalis triangularis - Shamrock - 3ltr Perennial
Oxalis triangularis - Shamrock - Hardy, highly invasive woodland plant with 3-lobed leaflets. Flowers are solitary and borne in the spring. Likes moist soil sun or partial shade.
Ozothamnus ros. Silver Jubilee - Helichrysum. - Evergreen upright dense shrub with woolly white shoots and narrow dark green leaves. Clusters of fragrant white flower heads open in early summer. Requires full sun and well drained soil. Height 1.7m. Spread 1.5m.
