Download Verbascum phoeniceum Mix

Verbascum phoeniceum
Mix
Purple Mullein
Culture guide
Uses:
Perennial solitary plants for border and
landscape, attractive for bees
Exposure:
Sun
Garden height:
59" / 150 cm
Sow time:
January-May for flowering in pots from May
onwards; July-August for flowering in pots the
following year
Sowing method:
1 seed per plug, sowing directly into final pots is
recommended
Germination:
Germinates in 10-14 days at 70-75 °F (21-24 °C).
Light is required for germination.
Growing On:
Transplant plugs after 5 weeks. Grow on at 60-65
°F
(15-18 °C). Vernalization is not required for
flower initiation.
Media:
Use a well-drained, growing substrate with 15-30
% clay, 0-15 % parts (e.g. bark, perlite, sand), 1-2
kg/m³ complete balanced fertilizer, 0-3 kg/m³ slow
release fertilizer (3-9 months), iron-chelate,
micronutrients, pH: 5.5-7.0.
Temperature:
Grow at 10-15 °C or outdoors. Avoid
temperatures above 25 °C. In winter indoors frost
free at 3-5 °C or outdoors. In spring the plants
start to grow at 15-18 °C and long day. Cold
temperatures at 5 °C will increase the cultivation
time by 2-4 weeks. For flower initiation a chilling
period (vernalization) for at least 4 weeks at 0-5
°C is recommended for V. phoeniceum. This
treatment improves the leaf rosette, improves the
branching and a higher quantity of flower stems
are formed. The chilling period is recommended
for annual production, too. Cultivation at warm
temperatures will require high light levels. At low
light levels cold temperatures are required for a
good plant and stem quality.
Fertilization:
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 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 (0,05 %) 1-2
times and in case of iron deficiency apply
iron-chelate for 1-2 times. Nutrition and water
deficiency is a cause for yellow leaves and
necrosis on leaf edges.
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