Calendula officinalis Bon Bon™
English Marigold, Pot Marigold
Pot, border and mixed container
12" / 30 cm
1-3 seeds per plug
5-10 days at 70 °F (21 °C), cover seed lightly with vermiculite after sowing.
Transplant plugs after 2-3 weeks. Grow on at
50-55 °F (10-13 °C). Calendulas are cool weather plants that are best produced for spring or early fall sales.
Use a well-drained, growing substrate with 10-30
% clay, 0-15 % parts (e.g. bark, sand, perlite),
1-1,5 kg /m³, complete balanced fertilizer. Iron-chelate, micronutrients, pH 5.8-6.5.
Grow at 10-15°C (50-59 °F). Calendula does not grow at temperatures below 8°C (46 °F). A cool cultivation in early spring in polytunnel or cold greenhouse is possible.
High fertilization levels are required. Fertilize the crop weekly with 100-200 ppm nitrogen (at 2 kg/m³ slow release fertilizer in substrate), using a complete balanced fertilizer. Avoid high ammonium and high nitrogen levels. High
nitrogen levels cause delay in flower initiation and smooth stems. Prevent magnesium deficiency by applying magnesium sulphate (0,025%) 1-2 times and in case of iron deficiency apply Fe-Chelate
for 1-2 times.
“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.”