HORT 344 Summer Perennials

Achillea filipendullina aka fernleaf yarrow

Gray-green fern-like foliage, aromatic, yellow flowers with compound coyrmbs

2-4’ tall, mounded, two-tiered, sprawling

Achillea millefolium cultivars aka rose yarrow

Foliage is medium to dark green, fern-like leaves, flowers in many colors

1.5-2’ tall mounding, two-tiered, sprawling

Agastache foeniculum aka anise hyssop

Lavendar to purple spikes of flowers, ovate dull green leaves

2-4’ tall, mounding

Allium spp. aka ornamental onion

Pink to lavendar flove umbel flowers, grass-like leaves

2’ tall, mounding, two-tiered

Asclepias incarnata aka swamp milkweed

Unique pink flowers, narrow lanceolate leaves

4-5’, upright clump

Asclepias tuberosa aka butterfly weed

Unique “vivid Illini orange” flowers, medium green lanceolate leaves

1.5-3’, upright clumping

Calamagrostis x acutiflora “Karl Foerster’ aka Karl Foerster feather reed grass

pink-purple feather panicles, that turn golden (look like wheat), medium green leaves (grass)

3-5’ in flower, upright linear

Calamintha nepeta supsp. nepeta aka calamint

Small, pale lavendar flowers, gray-green ovate leaves with mint scent

12-18”, mounded, rhizomatous

Corepsis grandiflora aka large-flower tickseed

Yellow, daisy-like with jagged edges, green glabrous leaves

1-2.5’, mounded, two-tiered, flowering

Corepsis verticicillata aka threadleaf coreopsis

Yellow, star-like flowers, medium green palmately dissected needle leaves

2.5-3’, mounded

Dalea purprea aka purple prarie clover

Purple cone-like spike (thimble-shaped), medium green needle-like leaves

12-24”, mounded

Echinacea purpurea aka purple coneflower

Yellow-brown center with dropping petals, lanceolate leaves

3’, upright mounded

Eupatorium perfoliatum aka boneset

Tiny white flowers (fluffy), serrate lanceolate leaves (fused)

4-6’, upright

Gaillardia x grandiflora aka blanket flower

Red-yellow center (fluffly) with red-yellow petals, linear leaves

2-3’, mounded, sprawling

Hemerocallis spp. aka daylily

6 petals, bloom for 1 day, medium green leaves form rosette

1-4’, arching, vase-shaped, two-tiered

Heuchera spp. aka coral bells

Small bell-shaped leaves, purple to green foliage, 5-7 lobe leaves

1-1.5’ in flower, mounded, two-tiered

Leucanthemum x superbum aka shasta daisy

Yellow center with white petals, lanceolate to spatulate, serrated leaves

1-4’ in flower, mounded to upright

Lilium spp. aka lily

6 petals, many colors, 3-6” flowers, lanceolate leaves

2-6’, upright, vase-shaped

Lobelia cardinalis aka cardinal flower

3 lower lobes, reflexed downwards, green, oblong-lanceolate, serrate leaves

2-4’, upright linear

Monarda didyama aka bee balm

lavender, pink, purple flowers with fluffy look, spherical crown, lanceolate, serrate leaves, minty or fruity smell, square stem

2-4’, upright linear

Penstemon digitalis aka beardtongue

White flowers, bright green to red/maroon leaves

2-3’, mounded, two-tiered

Phlox paniculata aka garden phlox

Long corolla tube, 5 petals, oblong leaves

2-4’, upright linear

Pycnanthemum virginianum aka common mountain mint

White flowers with purple spots on spherical flower head, needle-like leaves, square stems

3’, upright mounded

Ratibida pinnata aka gray-head coneflower

Long, yellow ray petals growing downwards, pinnately divided leaves

3-5’, sparsely foliated

Rudbeckia fulgida var. sullivantii ‘Goldsturm’ aka Goldsturm black-eyed susan

Black-brown center, yellow disk petals, dark green, ovate serrate leaves

24-30”, mounded

Silphium perfoliatum aka cup plant

Yellow disk florets, many ray petals, emerging from cup-shaped leaf, toothed and rough feeling foliage

4-8’, single stalks, unbranching

Thymus serpyllum aka creeping thyme

Pink-purple, tiny, bell-shaped, tiny, glossy, blue-green leaves, minty smell

2-3”, groundcover, rocky garden