Phlox Spring Bling 'Rose Quartz' is a hybrid creeping spring phlox with rose-pink flowers and white eyes.

Phlox Spring Bling 'Ruby Riot' is a hybrid creeping spring phlox with reddish-pink flowers and darker eyes.

Phlox 'Amethyst Pearl' has sweetly fragrant, pinkish lilac flowers on stems under 2 feet tall and shiny, mildew-free leaves.

Phlox 'Baby Doll Pink' is a short, upright, hybrid phlox with bright pink flowers with white centres.

Phlox 'Baby Doll White' is a short, upright, hybrid phlox with bright white flowers with deep pink centres.

Phlox 'Bedazzled Lavender' is a creeping hybrid spring phlox with lavender flowers, a lighter haloed centre, and dark purple eyes.

Phlox 'Fashionably Early Crystal' is an upright hybrid phlox with fragrant white flowers with a light purple eye on dark green stems and leaves.

Phlox 'Fashionably Early Flamingo' is an upright hybrid phlox with fragrant lavender-pink flowers on dark green stems and leaves.

Phlox 'Kung Fuchsia' is an upright hybrid phlox with fragrant, fuchsia-pink flowers all summer long.

Phlox 'Rocky Road Magenta' is a creeping hybrid spring phlox with magenta-purple flowers with tiny dark eyes.

Phlox 'Rocky Road Periwinkle' is a creeping hybrid spring phlox with flowers of blue to light purple tones.

Pacific ninebark (Physocarpus capitatus) is a medium-sized to large shrub with dome shaped clusters of white flowers.

Physocarpus opulifolius 'Ginger Wine', known as ninebark, is a North American nativar with white flowers and orange foliage that turns burgundy.

Physocarpus opulifolius 'Panther', known as ninebark, is a beautiful North American nativar with dark burgundy foliage.

Physocarpus opulifolius 'Raspberry Lemonade' is a cold-hardy ninebark shrub with chartreuse foliage, white flowers, and red ornamental fruit.

Physostegia virginiana 'Miss Manners' is a cold hardy, non-spreading perennial with white two-lipped blooms.

P. japonica 'Little Heath' is a beautiful evergreen shrub with white margins on its leaves and mahogany-red new growth.

Podophyllum hexandrum is a delightful barberry relative for the woodland garden with attractive foliage and delicate pink to white flowers.

Podophyllum peltatum is a beautiful foliage plant for the woodland garden that will spread into lush colonies.

Podophyllum pleianthum has large, glossy star-shaped umbrellas that make dramatic clumps in the shade garden.

Polemonium pulcherrimum 'Golden Feathers' is a Jacob's ladder with variegated green and yellow foliage and mauve flowers.

Polemonium 'Bressingham Purple' is a Jacob's ladder with purple foliage and purple flowers that smell like grape Hubba Bubba!

Polemonium 'Hurricane Ridge' has clusters of lilac-blue flowers atop dense, mounded, fern-like foliage.

Tuberoses (Polianthes tuberosa) are famous for their thick, delicious, intoxicating fragrance from spikes of ivory flowers.

Tuberoses (Polianthes tuberosa) are famous for their intoxicating fragrance. 'Pink Sapphire' has double lavender-pink flowers.