- Botanical Name
- ‘Goldsturm’: Rudbeckia fulgida. Sweet Coneflower: R. subtomentosa. Green Headed: R. laciniata. Giant: R. maxima.
- Plant Type
- Herbaceous perennial
- Size (HxW)
- ‘Goldsturm’: 60-90cm x 40-60cm. Green Headed, Giant: 90-250cm x 60-100cm.
- Depth & Spacing
- Plant at the same height as in the pot with the roots spread evenly below. See above for spacing.
- Soil
- Moderately fertile to humus rich, well drained soil is ideal.
- Aspect
- Full Sun to Semi Shade – it needs at least six hours a day to flower well.
- Climate
- Cool to Mediterranean
- Frost
- Hardy
- Water
- Water to establish (this takes around four weeks of regular watering), then keep moist during active growth.
- Fertiliser
- They love humus rich conditions so organic matter is important. A general purpose fertiliser spring/summer will keep them blooming well.
- Flowering Time
- Summer to autumn
- After Flower Care
- Dead head regularly to increase bloom time, though even without this they are impressive. Remove spent flowers and foliage to tidy OR allow the seed heads to stand over winter for ornamental enjoyment and the birds. Cut back foliage to the ground once it has yellowed.
- Notes
- Beware of slugs and snails when the plant is young. They are rhizomatous, dig and divide as they outgrow their space and to keep their vigour. Plant so it is protected from strong winds or you may need to stake. Any seed that takes won’t be true to type. You can pinch early in the season for shorter plants.
Rudbeckia Giant Coneflower
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Giant Coneflower
Giant Coneflower
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