More Views


Availability: In stock

Masses of long-lived golden yellow flowers with dark centers
€2.500 each
Tier Prices
  • Buy 5 gram for €2.500 each
  • Buy 25 gram for €1.800 each
  • Buy 50 gram for €1.600 each

RUDBECKIA fulgida GOLDSTURM is available for purchase in increments of 5 gram.



Rudbeckia fulgida
Black-Eyed Susan

Culture guide

Plants for border, pot and container plants, plants attract bees and butterflies

Sun - Partial shade

Garden height:
28" / 70 cm

Crop time:
16-18 weeks

Sow time:
January-June for flowering in pots from July onwards (limited flowering); June-August for flowering in pots the following year

Sowing method:
2-3 seeds per plug

Moist chill seeds for 2-4 weeks at 40 ºF (5 ºC). Germinate at 85 ºF (30 ºC)

Growing On:
Grow on at 50-65 ºF (15-18 ºC)

Use a well-drained, growing perennial substrate with 0-15 % clay, 0-15 % parts (e.g. bark, wood fibres), 1-1,5 kg/m³ complete balanced fertilizer, 1-3 kg/m³ slow release fertilizer (3-9 months), iron-chelate, micronutrients, pH: 5.5-6.5. Field: loamy sandy to sandy humus soils with good drainage and good nutrition levels. Standard fertilization: 80-100 g/m² of a slow release fertilizer.

Grow at 10-18 °C or outdoors. In winter indoors frost free at 3-5 °C or outdoors. Outdoors fleece cover needed. For wintering the plants should have formed 8-10 leaves. In spring the plants start to grow for 12-14 weeks at 15-18 °C and long day.
Cold temperatures at 10-15 will increase the cultivation time. A chilling period (vernalization) for 10-12 weeks is recommended for flower initiation.

High fertilization levels are required. Fertilize the crop weekly with 150-200 ppm nitrogen (at 3 kg/m³ slow release fertilizer in substrate), using a complete balanced fertilizer. Avoid high ammonium and high nitrogen levels. Don’t fertilize after mid September. In spring fertilize 150-200 ppm nitrogen of a potassium balanced fertilizer (N: K2O-ratio: 1:1,5). Prevent magnesium deficiency by applying magnesium sulphate (0,05 %) 1-2 times and in case of iron deficiency (above pH 6.0) apply iron-chelate for 1-2 times. Field: If necessary according to analysis, improve the soil with 80-100 g/m² of a slow release fertilizer per year, applied in several portions. Take care of possible iron deficiency and apply iron-chelate for 1-2 times. N min soil value: approximately 150 g N/m².

“Information copied from the breeder.
Muller will not accept any liability for failure and/or damage as a consequence of incorrect and/or inexpert cultivation by or on behalf of the Buyer.”