Plants A-Z

Prickly Poppy

Argemone polyanthemos

Western native with white, 2 1/2–4-in. flowers.

Pride of California

Lathyrus splendens

Native to chaparral in San Diego County and adjacentBaja California. Grows to 8–10 ft. Each stem bears...

Pride Of Madeira

Echium candicans

From Madeira, as its common name indicates. Large, picturesque plant to 5–6 ft. tall, 6–10...

Primrose

Primula

Most primroses are native to the Himalayas and cool regions of southeast Asia and Europe.

Plan...

Primrose

Primula obconica

Grows to to 1 ft. high and wide. Perennial, but besttreated as annual. Soft, hairy,roundish leaves hav...

Primrose Tree

Lagunaria patersonii

Native to South Pacific and Australia. Rather fast growth to 20–50 ft. Young trees narrow and er...

Princess Flower

Tibouchina urvilleana

The only species widely available. Fast, rather open growth to 5–18 ft. tall, 3–10 ft. wid...

Pringle's Aster

Aster pilosus pringlei

Eastern U.S. native known in cultivation through its variety ‘Monte Cassino‘, a familiar f...

Privet

Ligustrum

Most widely used as hedges, though one type is a street tree; can also be clipped into formal shapes a...

Pummelo

Citrus (Pummelo)

A vigorous grower, reaching 15 to 30 ft. tall, with 4 to 8 in. leaves. This forerunner of the grapefru...

Pumpkin

Pumpkin

Thought to have originated in South America; related to squash, gourd, melon. Pumpkins are available i...

Purple Allamanda

Allamanda blanchetii

Shrubby grower to 6–10 ft. tall and wide, often with a few vining stems. Leaves are somewhat downy. Ro...