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Plants / Black-eyed Susan

Black-eyed Susan

Rudbeckia hirta

Also known as: Rudbeckia

ðŸū Pet-safeAsteraceaeEasy to propagate

A complete guide to growing and propagating Black-eyed Susan: its care needs, how to take cuttings and root them, how long propagation takes, and how to fix the most common problems.

Black-eyed Susan care at a glance

☀ïļ Light
Full sun; needs at least 6 hours for prolific flowering.
💧 Water
Water while establishing; drought-tolerant once mature.
ðŸŠī Soil
Average, well-draining soil.
ðŸ’Ļ Humidity
Short-lived perennial or biennial hardy in zones 3-9.
ðŸū Toxicity
Non-toxic to cats and dogs; not on the ASPCA toxic list, though the foliage may cause mild irritation in sensitive individuals.

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Log when you took each cutting, set rooting reminders, and watch your propagation timeline — free on iPhone.

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How to propagate Black-eyed Susan

Division

Difficulty: EasyTimeline: Immediate; divisions bloom the following season.
  1. Lift a mature clump in early spring or fall.
  2. Split the crown into sections with roots and shoots.
  3. Replant divisions at the same depth.
  4. Water in and keep moist while establishing.

Seed

Difficulty: EasyTimeline: Germinates in 1-3 weeks; blooms the same or second year.
  1. Surface-sow seeds and press in lightly; they need some light.
  2. Keep warm and moist until germination.
  3. Thin or pot on seedlings.
  4. Plant out after the last frost.

Common Black-eyed Susan problems & fixes

Cuttings rot before they root

Too wet or no airflow. Use a free-draining mix, water sparingly, and vent the humidity cover daily.

Cuttings wilt after taking them

Normal at first — keep humidity high under a dome, out of direct sun, until roots form and perk them up.

Powdery mildew on leaves

Poor airflow and damp foliage. Space plants out, water at the base, and improve circulation.

Track your black-eyed susan cuttings & propagation in SnipLog

Log when you took each cutting, set rooting reminders, and watch your propagation timeline — free on iPhone.

Get SnipLog →

Toxicity notes are a general guide based on ASPCA-style classifications — if a pet ingests any houseplant, contact your vet. Care needs vary with your home's conditions.