Found colonising a railway embankment in the USA by a retired horticulturalist, this beautiful coneflower has finely quilled ray florets (petals), which surround a rounded, orange-brown cone. Perfect for adding late colour to mixed or herbaceous borders, they also make fine companions to ornamental grasses.
How to care for Rudbeckia subtomentosa Henry Eilers:
Lift and divide congested colonies in autumn or spring. Support with ring stakes or brushwood well before the flowers appear.
Flowering period:
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Eventual height:
1.2m
Eventual spread:
0.6m
Soil:
Moderately fertile, moist, well-drained soil
-
This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.