Heat and humidity tough perennials including Coreopsis, Spigelia, Black‑Eyed Susan, and Ornamental Grasses deliver vibrant color, movement, and durability for sunny southern gardens.

Featured Plants

'Orange Slices' Spigelia
DESIGNER THREADS® 'Heartstrings' Threadleaf Coreopsis
'Treasure Trove' Black-Eyed Susan
PRAIRIE WINDS® 'Cheyenne Sky' Ornamental Grass

Seasonal Progression

This blend of sun perennials brings together plants with regional roots that flourish in heat and humidity while delivering long‑lasting beauty. DESIGNER THREADS® Threadleaf Coreopsis kicks off the season with airy texture and bright, cheerful blooms that keep coming all summer. Slices Spigelia adds bold, eye‑catching flowers and glossy foliage that handle southern conditions with ease. As summer peaks, ‘Treasure Trove’ Black‑Eyed Susan fills the garden with golden color and exceptional durability. PRAIRIE WINDS® Ornamental Grasses tie it all together, adding movement, structure, and resilience from summer into fall. This tough, vibrant combination stays attractive through the hottest, most humid days with minimal care.

Environmental Requirements

Light

Full Sun

Moisture

Light, Moderate

Soil

Loose, Well-drained

Zones

5, 6, 7, 8, 9

Features

Fall Interest, Fantastic Foliage, Heat & Humidity Tolerant, Long Season of Bloom, Low Maintenance, Pollinator Friendly

Plants in this EZ Scape™

Spigelia Orange Slices blooming in the landscape
'Orange Slices' Spigelia marilandica

Orange Slices (Spigelia marilandica)

Long Season of Bloom • Pollinator Friendly • Nativar • Summer Interest

Height: 16-20″
Spread: 20-24″
Zones: 5-9
Primary Season of Interest: Summer
Secondary Season of Interest: Summer and Fall (Rebloom)
Care Tips: Easy to grow, this perennial will thrive in any well-drained soil with full sun. Drought tolerant when established.

DESIGNER THREADS® 'Heartstrings' (Coreopsis verticillata)

DESIGNER THREADS® Threadleaf Coreopsis (Coreopsis verticillata)

Pollinator Favorite • Drought Tolerant • Attractive Foliage

Height: 16-20″
Spread: 20-24″
Zones: 5-9
Primary Season of Interest: Late Spring through Summer
Secondary Season of Interest: Spring & Fall (Foliage)
Care Tips: Easy to grow, this perennial will thrive in any well-drained soil with full sun. Drought tolerant when established.

Treasure Trove Black Eyed Susan yellow flowers
'Treasure Trove' Black-Eyed Susan (Rudbeckia)

'Treasure Trove' Black-Eyed Susan (Rudbeckia)

Disease Resistant • Pollinator Friendly • Nativar • Summer Interest

Height: 30-36″
Spread: 36-42″
Zones: 4-9
Primary Season of Interest: Summer
Secondary Season of Interest: Fall (Seedheads)
Care Tips: Flowers heaviest in full sun, fertile soils. Prefers loose, well-drained soils and dry to average moisture.

PRAIRIE WINDS® 'Cheyenne Sky' Switch Grass (Panicum virgatum)

PRAIRIE WINDS® Ornamental Grass (Panicum virgatum)

Excellent Leaf Texture • Fall Interest • Winter Interest

Height: 36-72″
Spread: 18-48″
Zones: (4)5-9
Primary Season of Interest: Late Summer, Fall
Secondary Season of Interest: Winter
Care Tips: One of the easiest ornamental grasses to grow in full sun. Does well in any soil from sand to clay. Cut back in spring before new growth appears.

Expand this Recipe

Close up of soft purple blooms and the mounded habit of Totally Stoked™ 'Riptide' Stoke's Aster
TOTALLY STOKED™ 'Riptide' Stokes' Aster (Stokesia laevis)
Blue flowers and green fern-like foliage of String Theory Blue Star in a mulched garden bed
'String Theory' Blue Star (Amsonia)
Decadence Lemon Meringue flowers
DECADENCE® 'Lemon Meringue' (Baptisia)