Rudbeckia (Black-eyed Susan)
Rudbeckia ground cover flowers come in a wide variety of eye-catching colours. The daisy like flowers of these robust, long-flowering plants will dazzle in borders, summer bedding, containers and prairie-style plantings. Perennial varieties tend to be yellow flowered, whereas those grown as annuals are available in a wider colour range, with shades of yellow, orange, dark red or brown. It’s no surprise that with their lovely open, sunny faces, they are attractive to bees and butterflies alike. Their foliage can be hairy or smooth and comes in green or grey depending on the variety.
Rudbeckia (Black-eyed Susan) ground cover are incredibly popular – and with good reason! Delivering their cheerful flowers from June through to October, they add a splash of colour and interest to any garden. Compact and bushy, they do not require staking and are low maintenance beyond asking for moderately fertile, moisture retentive but not soggy soil. Though you could plant them in semi-shaded areas, they will flower best in full sun.
Types of Rudbeckia Ground Cover
For best results with Rudbeckia, plant them in full sun in fertile, moist, but well drained soil enriched with lots of organic matter, which holds plenty of moisture in spring and summer. Avoid letting them dry out. Simply dead head them to prolong the flowering period.
As a rough guide when planting Rudbeckia as ground cover – 4 plants per square metre is adequate with a little patience, 6 will give better coverage, and 9-12 will make a weed supressing carpet very quickly.
How to grow Rudbeckia
Position: Sun or partial sun
Foliage: Annual, Perennial
Soil and site: Best in moist, fertile, well drained soil
Flowering time: Early Summer to Autumn
Growth rate: Moderate
Ultimate height and spread: Height to 200cm, spread to approximately 90cm depending on variety
Hardiness: Hardy once established
Aftercare: Apply a generous mulch in spring or after planting out annuals and feed regularly through the growing season. Deadhead spent flowers to encourage more blooms. Divide overcrowded plants every few years.