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Availability: In stock

Large, deep violet flower clusters are held over dark green foliage
€3.000 each
Tier Prices
  • Buy 5 gram for €3.000 each
  • Buy 25 gram for €2.400 each
  • Buy 50 gram for €2.000 each

CAMPANULA glomerata DAHURICA DEEP BLUE is available for purchase in increments of 5 gram.



Campanula glomerata DAHURICA (SUPERBA) Bell flower

Culture guide

Perennial for border and open positions, beautiful plants, that attract bees, cut flowers

Sun - Partial shade

Garden height:
20" / 50 cm

Crop time:
10-12 months

Sow time:
March-May for green pots; June-August for flowering in pots the following year; March-May for cut flower production

Sowing method:
3-5 seeds per plug, sowing in final pot is possible

Sow in a well-drained media with good moisture holding capacity. Germinates in 14-21 days at
65-70 °F (18-21 °C) with 95% relative humidity.

Growing On:
Transplant plugs after 7-8 weeks. Grow on at temperatures of 54-65 °F (12-18 °C) in a loose, well-drained, alkaline medium. Vernalization is required for flowering. After vernalization period, force plants at temperatures of 60-65 °F (15-18
°C) under long days for 7-8 weeks.

Use a well-drained, growing perennial substrate with 0-15 % clay, 0-20 % parts (e.g. bark, sand, perlite), 1-1,5 kg/m³ complete balanced fertilizer,
0-3 kg/m³ slow release fertilizer (3-9 months), iron-chelate, micronutrients, pH: 5.5-6.0. Field: sandy loamy soils to loamy sandy soil, calcareous and with a good drainage. Standard fertilization:
80-100 g/m² slow release fertilizer. If necessary improve the soil with peat and keep the soil level open.

Grow at 12-18 °C. In winter indoors frost free at
3-5 °C or outdoors. For wintering the root development in pots has to be good. In spring the plants start to grow for 7-8 weeks at 15-18 °C and long day. Cold temperatures at 10-13 °C will increase the cultivation time. A chilling period for flower initiation is required. Campanula can also be made to flower three weeks in the poly tunnel earlier.

Moderate-high fertilization levels are required. Fertilize the crop weekly with 100-150 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 with 100-150 ppm nitrogen of a potassium balanced fertilizer (N: K2O-ratio: 1:1,5). Prevent magnesium deficiency by applying magnesium sulphate (0,025 %) 1-2 times and in case of iron deficiency apply iron-chelate for 1-2 times. Field:
If necessary according to analysis, improve the soil with 80-100 g/m² slow release fertilizer per year, applied in several portions. N min soil value:
approximately 130 g/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.”