Lavandula angustifolia

Munstead Variety

Item no.: O9990/T
  • Deep lavender blue flowers
  • Compact evergreen clump-forming perennial
Crop time
Spring: 10 - 12 months
Height
16 ″ / 40 cm
Exposure
Sun
Seed form
Raw Seed, ApeX
Uses
Bedding, Cutflower, Landscape

Culture guide

Usage

Plants for border and open positions, ornamental leaf plant, aromatic plant, medicinal plant, pot and container plants, plants attractive for bees, extensive roof planting

Sow time

January-March for green pots, June-August for flowering in pots the following year

Sowing method

1-2 seeds per plug

Germination

Germinates in 14-20 days at 65-72 °F (18-22 °C). Light is required for germination. Treated ApeX seed increases germination percentages over that of raw seed.

Growing on

Transplant plugs after 9 weeks. Grow on at 55-65 °F (12-18 °C) in an alkaline medium. Vernalization is required for flower initiation. After vernalization, begin forcing plants at temperatures of 60-65 °F (15-18 °C) for 6-7 weeks under long days to promote flowering.

Media

Use a well-drained, growing perennial substrate with 0-15 % clay, 0-15 % parts (e.g. perlite, sand, bark), 1-2 kg/m³ complete balanced fertilizer, 0-2 kg/m³ slow release fertilizer (3-9 months), iron-chelate, micronutrients, pH: 5.8-7.0.

Temperature

Grow at 12-21 °C or outdoors. In winter indoors frost free at 3-5 °C or outdoors. Outdoor fleece cover needed. In spring the plants start to grow for 6-8 weeks at 18-21 °C. Cold temperatures at 12-15 °C will increase the cultivation time by 3-4 weeks. A chilling period (vernalization) for flower initiation for at least 15 weeks at 3-5 °C is required. A forcing in spring with warm temperatures need high light intensity and decreases the cultivation time.

Fertilization

Moderate fertilization levels are required. Fertilize the crop weekly with 100-150 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 are the cause that the shoots are stretched and the plant fall apart. Don’t fertilize after mid September. In spring fertilize 100-150 ppm nitrogen of a complete balanced fertilizer. 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.


Stage I Starts with the radicle breaking through the testa. The roots are touching the medium. Ends with fully developed cotyledons.
Stage II Starts from fully developed cotyledons. Ends with the fully developed true leaf or true leaf pair.
Stage III Starts from the fully developed true leaf or true leaf pair and ends with 80% of the young plants being marketable.
Stage IV All young plants are ready for sale and in the process of being hardened off. This stage lasts about 7 days.

The cultural recommendations are based on results from trials conducted under Central European conditions. Different conditions in other parts of the world may lead to deviations in results achieved.

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