Panicle Hydrangea vs Black-Eyed Susan - TreeTime.ca

Panicle Hydrangea vs Black-Eyed Susan

Rudbeckia hirta

Hydrangea paniculata

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Black-Eyed Susan
Panicle Hydrangea

Black-Eyed Susan is a striking native wildflower known for its bright yellow, daisy-like flowers with dark center disks. With deadheading, the plant can bloom for an extended period, from mid-summer to early fall. These cheerful flowers attract a variety of pollinators, including bees and butterflies. Adding to its ecological value, the plant also acts as a host for the Wavy-Lined Emerald Moth (Synchlora aerata) and the Silvery Checkerspot (Chlosyne nycteis) butterfly.

While it is typically a short-lived perennial or biennial, the plant freely self-seeds. This allows it to persist in the landscape, particularly in natural areas where it can spread and establish itself. This plant is drought-tolerant, salt-tolerant, and deer and rabbit-resistant, making it ideal for challenging environments. The Black-Eyed Susan is well suited to wildflower gardens, pollinator gardens, as well as slopes, banks, and naturalized areas.

Panicle Hydrangea is a large, broad-leaf, deciduous shrub that is prized for its ornamental appeal. It is easy to care for, long-lived, and cold-hardy.

Depending on the variety, its flowers change color throughout the blooming period. Make sure you water Panicle Hydrangeas regularly to achieve the most notable color change.

Black-Eyed Susan Quick Facts

Panicle Hydrangea Quick Facts

Zone: 3a
Zone: 3a
Height: 0.8 m (2.5 ft)
Height: 6 m (20 ft)
Spread: 0.5 m (1.5 ft)
Spread: 3 m (10 ft)
Light: full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal
Growth rate: very fast
Growth rate: fast
Life span: short
Life span: short
Suckering: none
Suckering: medium
Maintenance: medium


Flowers: bright yellow; daisy-like
Flowers: white, strong scent, very showy
Bloom time: early summer to fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: SK, MB, ON
Other Names: hairy coneflower
Other Names: white panicle hydrangea