How far apart should I plant Rudbeckia?

Plant Rudbeckia 45cm apart with 50cm between rows.

When does Rudbeckia flower?

Rudbeckia typically flowers approximately 90 days after transplanting.

Rudbeckia is classified as Hardy.

Rudbeckia hirta

Hardy Warm Season Single Harvest

Direct sow outdoors as soon as soil reaches 12°C — typically early to mid spring. Can also be started indoors 7 weeks earlier for a head start.

Sow seeds

Germination ~14d

Flowering ~90d

Sow seeds

Germination ~14d

Flowering ~90d

Approximate days from start

Care Essentials

Light balanced feed at planting out. Rudbeckia are unfussy and perform well in average soil without heavy feeding.
Rudbeckia hirta varieties flower prolifically in their first year from seed, making them ideal as seasonal bedding or cut flowers. Deadhead regularly to prolong flowering well into autumn. Often treated as an annual since plants weaken after the first spectacular season — hence this seasonal option alongside the perennial Rudbeckia fulgida.

Companion Planting

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Growing Conditions

Min. soil temperature: 12°C+

Germination temperature: 18–24°C

Get a personalized schedule for Rudbeckia based on your exact frost dates

Feeding: Light balanced feed at planting out. Rudbeckia are unfussy and perform well in average soil without heavy feeding.
Watch for: Aphids on young growth
Powdery mildew in late summer
Slugs on seedlings
Leaf spot in wet seasons

How far apart should I plant Rudbeckia?: Plant Rudbeckia 45cm apart with 50cm between rows.
When does Rudbeckia flower?: Rudbeckia typically flowers approximately 90 days after transplanting.
Is Rudbeckia frost hardy?: Rudbeckia is classified as Hardy.

Plan Rudbeckia in your garden — get personalized frost-date scheduling