Plants A-Z

Ornithogalum umbellatum

Star Of Bethlehem

From the eastern Mediterranean. Stems to 1 ft. tall bear clusters of 1-in. white flowers striped green...

Orthrosanthus multiflorus

Morning Flag

Clumps reach 1–2 ft. high, 1 ft. wide. Smooth-edged leaves. Pale to bright blue flowers are about 1 1/...

Oryzopsis hymenoides

Indian Rice Grass

Native to the dry regions of the Southwest and northward to Canada. Forms a clump 1–2 ft. high and wid...

Osmanthus fragrans

Sweet Olive

Native to China, Japan, Himalayas. Broad, dense, compact. Grows at a moderate rate to 10 ft. tall, 6&n...

Osmanthus heterophyllus

Hollyleaf Osmanthus

From Japan. Grows to 10–20 ft. tall and slightly wider, with 2 1/2-in., spiny-edged, glossy gree...

Osmanthus x burkwoodii

Slow growing hybrid to 6–10 ft. tall, 8–12 ft.wide. Densely clothed in glossy bright green...

Osmunda cinnamomea

Cinnamon Fern

Grows 2 to 5 ft. tall and 2 ft. wide. This fern has two types of fronds. Sterile fronds are erect, up ...

Osmunda regalis

Royal Fern

To 6 ft. tall, 3 ft. wide; each frond segment is quite large. Fertile segments are smaller, clustered ...

Osteospermum ecklonis

AFRICAN DAISY

To 2–5 ft. tall, 2–4 ft. wide. Long stems bear 3-in. flowers with dark blue centers and rays that are ...

Osteospermum fruticosum

African Daisy

Grows 6 to 12 in. tall, spreading rapidly by trailing, rooting stems; will cover a 2 to 4-ft.-wide cir...

Otataea acuminata aztecorum

Mexican Weeping Bamboo

Controlled height: 8–10 ft.

Uncontrolled height: (15–20 ft.)

Growth habit: II

Ste...

Oxalis oregana

Redwood Sorrel

Native to coastal forests from Washington to California. Grows to 10 in. high, spreading indefinitely ...