Black-Eyed Susan Varieties and Advanced Growing: Selection and Design

Advanced Black-Eyed Susan Growing and Variety Selection

The genus Rudbeckia offers remarkable diversity, from annual wildflowers to reliable perennials, with flowers ranging from classic gold to sunset reds and doubles. Understanding this diversity enables gardeners to create stunning native plantings for every situation.

Complete Guide to Rudbeckia Species

Rudbeckia hirta (Black-Eyed Susan)

Feature	Details
Native range	Eastern/Central North America
Lifespan	Annual to short-lived perennial
Height	1-3 feet
Flowers	2-4 inches (larger in cultivars)
Colors	Yellow to orange to red-brown
Self-seeding	Prolific

Rudbeckia fulgida (Orange Coneflower)

Feature	Details
Native range	Eastern North America
Lifespan	True perennial
Height	2-3 feet
Flowers	2-3 inches
Colors	Golden yellow with black center
Spreading	By rhizomes

Rudbeckia laciniata (Cutleaf Coneflower)

Feature	Details
Native range	Eastern North America
Lifespan	Perennial
Height	3-9 feet
Flowers	2-4 inches
Colors	Yellow with green center
Notes	Very tall, moist sites

Rudbeckia triloba (Three-Lobed Coneflower)

Feature	Details
Native range	Eastern North America
Lifespan	Biennial/short-lived perennial
Height	2-5 feet
Flowers	1-2 inches (small, abundant)
Colors	Yellow with dark center
Notes	Very floriferous

Variety Selection Guide

R. hirta Varieties by Height

Tall (3-4 feet):

Variety	Features
'Indian Summer'	Huge 6-9" flowers, AAS 1995
'Prairie Sun'	Light center, 5" flowers

Medium (2-3 feet):

Variety	Features
'Cherokee Sunset'	Double, sunset colors, AAS 2002
'Autumn Colors'	Red, bronze, gold mix
'Denver Daisy'	Bicolor with dark eye
'Cappuccino'	Russet-brown shades

Dwarf (Under 18 inches):

Variety	Features
'Goldilocks'	10", double/semi-double
'Toto'	10", classic single
'Becky'	10-12", large flowers
'Maya'	18", double golden

R. fulgida Varieties

Variety	Height	Features
'Goldsturm'	2-3'	Industry standard perennial
'Little Goldstar'	14-16"	Compact 'Goldsturm'
var. sullivantii	2-3'	Similar to 'Goldsturm'
var. speciosa	2-3'	Native variety

By Color

Color Range	Varieties
Golden yellow	'Goldsturm', 'Indian Summer'
Orange-gold	Most R. hirta types
Red/bronze	'Cherokee Sunset', 'Autumn Colors'
Bicolor	'Denver Daisy', 'Sonora'
Light center	'Prairie Sun', 'Irish Eyes'

Selection by Use

Perennial Borders

Best Types	Notes
R. fulgida 'Goldsturm'	Reliable return
R. fulgida 'Little Goldstar'	Compact spaces
R. laciniata 'Herbstsonne'	Back of border

Meadow/Naturalization

Best Types	Notes
R. hirta species	Self-seeds readily
R. triloba	Abundant small flowers
Mixed species	Natural succession

Cut Flowers

Best Types	Notes
'Indian Summer'	Large, long stems
'Cherokee Sunset'	Unique colors
'Denver Daisy'	Bicolor interest

Containers

Best Types	Notes
'Toto'	Compact, single
'Goldilocks'	Compact, double
'Becky'	Short, large flowers

Growing Techniques

Establishing from Seed

Direct Sowing:

Season	Method
Spring	After frost, surface sow
Fall	Natural stratification
Preparation	Rake lightly into soil

Indoor Starting:

Step	Details
Timing	6-8 weeks before transplant
Temperature	65-70°F
Light	Required for germination
Hardening	1-2 weeks before transplant

Ensuring Perennial Behavior

For R. hirta to return:

Factor	Requirement
Drainage	Excellent (especially winter)
Mulch	Protect roots, not crown
Division	Every 3-4 years
Allow self-seeding	Backup population

Division (R. fulgida)

Timing	Early spring or fall
Frequency	Every 3-4 years
Method	Dig, divide, replant
Benefit	Maintains vigor

Design Strategies

Native Plant Gardens

Layer	Rudbeckia Role
Tall	R. laciniata
Medium	R. fulgida, R. hirta
Short	Dwarf R. hirta

Prairie-Style Planting

Partners	Effect
Echinacea	Color contrast
Native grasses	Texture, movement
Asters	Fall continuation
Liatris	Vertical accent

Cottage Garden

Partners	Effect
Phlox	Color harmony
Salvia	Blue contrast
Daylilies	Complementary
Shasta daisies	Similar form

Color Schemes

Hot/Warm:

Rudbeckia	Partners
'Cherokee Sunset'	Crocosmia, red daylilies
'Autumn Colors'	Helenium, rudbeckia

Classic/Traditional:

Rudbeckia	Partners
'Goldsturm'	Purple coneflower
'Indian Summer'	Blue salvia

Meadow Creation

Seed Mix Approach

Component	Purpose
Rudbeckia hirta	Backbone species
Native grasses	Structure
Other wildflowers	Diversity

Establishment

Year	Expectation
1	Primarily annuals, some Rudbeckia
2	Strong Rudbeckia showing
3+	Balanced meadow community

Maintenance

Activity	Timing
Mowing	Once in late fall or early spring
Height	Leave 6-8 inches
Burning	Alternative to mowing (if permitted)

Extended Season Strategies

Succession Planting

Planting	Bloom Time
Fall sow	Early summer
Spring sow	Mid-summer
Transplants	Variable

Companion Sequencing

Season	Rudbeckia +
Early Summer	Baptisia, iris (finished)
Mid-Summer	Peak Rudbeckia bloom
Late Summer	Asters, goldenrod begin
Fall	Asters, grasses peak

Overwintering Strategies

For Perennial Return (R. hirta)

Factor	Approach
Drainage	Critical—avoid wet soil
Mulch	2-3 inches, not touching crown
Location	Southern exposure helpful
Zone	More reliable Zones 5-7

For R. fulgida

Factor	Approach
Division	Prevents crowding
Drainage	Important but less critical
Mulch	Helpful in Zones 3-4

Seed Saving

Collection

Timing	When seed heads are dry, dark
Method	Cut heads into paper bag
Processing	Rub to release seeds
Storage	Cool, dry, dark
Viability	2-3 years

Cross-Pollination

Concern	Details
Within species	Colors will mix
Between cultivars	Unpredictable offspring
Species cross	Rare

Regional Adaptations

Hot, Humid Climates

Challenge	Solution
Powdery mildew	Good spacing, airflow
Heat stress	Afternoon shade helpful
Best types	Species types, 'Goldsturm'

Cold Climates

Challenge	Solution
Winter survival	Excellent drainage
Late start	Start indoors
Best types	R. fulgida, R. hirta

Arid Climates

Challenge	Solution
Drought	Very tolerant once established
Best types	Species Rudbeckia
Irrigation	Occasional deep watering

Understanding Rudbeckia diversity and proper cultural techniques enables gardeners to incorporate these classic American wildflowers into any garden style.