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Often known as Black-eyed Susan, these vibrant flowers can brighten up any garden with their daisy-like blooms. If you're looking to add a splash of colour to your garden with minimal fuss, Rudbeckia is a fantastic choice.
Quick Answer
To grow Rudbeckia in the UK, plant them in well-drained soil with full sun. Sow seeds in early spring, and expect blooms from late summer to autumn.
Choosing the Right Variety
Rudbeckia comes in several varieties, from the popular 'Goldsturm' to the taller 'Herbstsonne'. Each has its unique characteristics, but all share the same hardy nature perfect for UK climates.
- 'Goldsturm': Shorter, with bright yellow petals and a black centre.
- 'Herbstsonne': Taller, reaching up to 2m, ideal for the back of borders.
- 'Prairie Sun': Unique green centre with yellow petals.
Planting and Soil Requirements
Rudbeckia thrives in well-drained soil enriched with organic matter. In Staffordshire, our clay-heavy soil benefits from the addition of compost to improve drainage. Plant your seeds or young plants in early spring after the last frost has passed.
| Month | Action | Details |
|---|---|---|
| March | Sow Seeds | Indoors or under glass |
| May | Plant Out | After last frost |
| July - October | Blooming Period | Enjoy the flowers |
Sunlight and Watering
These plants love full sun, so choose a spot that gets at least 6-8 hours of sunlight daily. While they're quite drought-resistant once established, regular watering during dry spells will keep them looking their best. In the Midlands, where summers can be unpredictable, be mindful of overwatering if the rain sets in.
Maintenance and Care
Rudbeckia is relatively low-maintenance. Deadhead spent blooms to encourage more flowers and tidy up your plants. In autumn, cut back the stems to around 15cm above ground level. This not only tidies up the garden but also prepares the plant for winter.
- Deadhead regularly for continuous blooms.
- Cut back in autumn for winter preparation.
- Add mulch in autumn for added frost protection.
Dealing with Pests and Diseases
Rudbeckia is quite resilient, but keep an eye out for powdery mildew and slugs. Planting in well-ventilated areas and avoiding overhead watering can help prevent mildew. For slugs, try using natural deterrents like crushed eggshells or coffee grounds.
Frequently Asked Questions
How tall does Rudbeckia grow?
Rudbeckia can vary in height from 45cm to over 2m, depending on the variety.
When is the best time to plant Rudbeckia?
Plant seeds indoors in March, and move them outdoors after the last frost in May.
Can Rudbeckia grow in partial shade?
While Rudbeckia prefers full sun, it can tolerate partial shade, though flowering may be reduced.