Rudbeckia 'Becky Mixed' (Becky Mixed black-eyed Susan) care

Light

Rudbeckia 'Becky Mixed' needs sun on the leaves, not just bright ambient room light. Full sun of at least 6 hours per day produces the most prolific flowering and the strongest, most compact habit. Partial shade is tolerated but reduces flower numbers and can increase disease susceptibility. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water rudbeckia 'becky mixed' every 7-10 days once established; keep containers evenly moist. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Water at the base and allow soil to partially dry between waterings. Container plants need more frequent watering — check daily in hot weather. Avoid waterlogging.

Soil and pot

Rudbeckia 'Becky Mixed' grows best in average, well-drained garden soil or multipurpose compost for containers. Very fertile soils are not needed and may reduce flowering. A pH of 6.0-7.5 is suitable. For pots, use a loam-based or peat-free multipurpose mix with added perlite for drainage. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Rudbeckia 'Becky Mixed' sits happiest at around 30-60% humidity and 10-35°C (50-95°F). Adaptable to a range of humidity conditions. In very humid climates, ensure good plant spacing and avoid overhead irrigation to keep powdery mildew in check. If you keep the room above 10 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed rudbeckia 'becky mixed' sparingly. A single application of balanced slow-release fertiliser at planting is usually sufficient. Container plants benefit from a fortnightly liquid tomato feed during the flowering season to maintain bloom production. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on rudbeckia 'becky mixed' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Powdery mildew — White, dusty coating develops on lower leaves in warm, dry conditions. Remove affected leaves and improve air circulation; apply a potassium bicarbonate spray if persistent.
• Slug and snail damage — Seedlings are most vulnerable. Protect with copper tape around container rims and organic slug pellets in borders.
• Short-lived nature — As a biennial or short-lived perennial, plants may not persist beyond the second year. Allow self-seeding or raise fresh plants annually from seed.
• Leggy growth in shade — Plants stretched towards light become weak and floriferous only at the tip. Always site in full sun for the compact habit the variety is bred for.
• Aphids — Occasionally infest soft new growth. Control with a strong water jet or dilute insecticidal soap spray.

Companion plants

Rudbeckia 'Becky Mixed' pairs well with Cosmos bipinnatus, Zinnia elegans, Echinacea purpurea, and Gaillardia. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Sow seed in spring at 18-21°C in light — do not cover seeds. Germination takes 7-14 days. Thin to final spacing when seedlings have two true leaves. 'Becky Mixed' may self-seed where conditions suit. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Rudbeckia 'Becky Mixed' is pet-safe. Rudbeckia hirta is listed by the ASPCA as non-toxic to dogs and cats. The hairy stems can occasionally cause mild contact irritation in sensitive animals, but the plant is not considered a systemic hazard. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Rudbeckia 'Becky Mixed' deep-dive guides

Every aspect of rudbeckia 'becky mixed' care, each with its own calibrated guide:

• Common rudbeckia 'becky mixed' problems & fixes
• Rudbeckia 'Becky Mixed' watering schedule
• Rudbeckia 'Becky Mixed' light requirements
• Best soil mix for rudbeckia 'becky mixed'
• Rudbeckia 'Becky Mixed' fertilizing guide
• When to repot rudbeckia 'becky mixed'
• How to propagate rudbeckia 'becky mixed'
• How to prune rudbeckia 'becky mixed'
• What's eating my rudbeckia 'becky mixed'?
• Rudbeckia 'Becky Mixed' growth rate & size
• Rudbeckia 'Becky Mixed' cold hardiness
• Rudbeckia 'Becky Mixed' temperature & humidity
• Is rudbeckia 'becky mixed' toxic to cats & dogs?
• Is rudbeckia 'becky mixed' toxic to cats?
• Is rudbeckia 'becky mixed' toxic to dogs?
• All 27 Rudbeckia varieties
• Getting rudbeckia 'becky mixed' to bloom

Featured in these plant shortlists

Rudbeckia 'Becky Mixed' qualifies for 8 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best pet-safe houseplants — Houseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• Best pet-safe flowering plants — Flowering houseplants the ASPCA lists as non-toxic to cats and dogs — colour and blooms in a pet home, without the worry.
• Best pet-safe plants for bright light — Non-toxic to cats and dogs and happy in a bright, sunny spot — safe plants for your best-lit windowsill.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Best cat-safe plants — Houseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
• Best dog-safe plants — Houseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Rudbeckia 'Becky Mixed' is also known as Becky Mixed black-eyed Susan, gloriosa daisy, and dwarf black-eyed Susan.

• Kahili Ginger care — light, water and common problems
• White Ginger Lily care — light, water and common problems
• Annual Clary care — light, water and common problems
• All 11687 plant care guides in the Growli library