New York Ironweed

Tiny, fluffy, deep purple flower heads in a 3-4 inch wide terminal cluster.

Ox-eye Daisy

White ray petals with flattened yellow center disk flowers. Each stem has a single flower.

Pale Spiked Lobelia

Small pale-purple or white flowers growing in a spike. The flowers have 2 lips. The upper lips has 2 lobes, the lower lip is divided into 3 wider lobes.

Periwinkle

Solitary purple flowers with a pinwheel shape. There is a white mark at the base of each petal.

Philadelphia Fleabane

One hundred or more white (sometimes pink or lavender) threadlike petals surrounding a yellow center. The leaves and stem are shaggy-hairy. The leaves are oval and clasp the stem.

Piedmont St. Johnswort

Yellow flowers with five petals growing in dense clumps. Leaves are linear and needle-like.

Pineywoods Goldenrod

Large clusters of small yellow flowers. The flowers are mostly on the upper side of each branch. The stem is often leaning over. The leaves bend downward or backward, and have smaller leaves alongside them.

Pokeweed

A tall plant with large leaves and dark red stems. The small white flowers give way to berries that mature to a shiny dark purple.