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.