Lavender

Lavandula angustifolia,  L.  x intermedia

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Market: Lavender is 9,000 Ha
worldwide.

Market Products: Fresh flower,
dried flower, potted plants, and oil {1.3% volatile oil or higher with good
color is desired}

Growing Culture: Exposure–full
sun, Soil–light, well drained, deep, not too rich, pH 6.5–7.5

Only English types are available
in seed form. Direct seeding not recommended. Germination is–15-30 days.  

Planting rate: 3-6 Kg per Ha.
Germination of English types is frequently below 50 %; *scarification
of seed or *freezing of seed-flat is recommended
to improve germination.

Direct seeded seed-flat to
finished plug 12-16 weeks in nursery before transplanting to field.

Field Spacing: 60-120cm row
centers, 25-120cm plant to plant.

Production Value: Dry Flower
500-1500/Kg per Ha {years 2-5},

Oil 8-32/Kg per Ha {years 2-5}.

Nursery plugs to finished
saleable potted plants 20-26 weeks.

Pests/Diseases: mealybug,
whitefly, spider mite, scale, caterpillar, nematode, phoma scab, septoria leaf
spot, armillaria root rot.

When grown from seed, some
English lavender cultivars are not 100% true to type, some variability in size
and flowering characteristics is to be expected.

*Seed Scarification:

Seed scarification involves
breaking, scratching, or softening of the seed coat so that water can enter and
begin the germination process. There are several methods of scarifying seeds.
In acid scarification, seeds are put in a glass container and covered with
concentrated sulfuric acid. Seeds are then gently stirred and allowed to soak
from 10 minutes to several hours depending on the hardness of the seed coat.
When the seed coat has become thin, the seeds can be removed, washed, and
planted. Another scarification method is mechanical. Seeds are filed with a
metal file, rubbed with sandpaper, or cracked with a hammer to weaken the seed
coat. Hot water scarification involves putting the seed into hot water (170° to
212°F); the seeds are allowed to soak in the water as it cools from 12 to 24
hours and then planted. A fourth method is one of warm moist scarification. In this
case, seeds are stored in non-sterile warm damp containers where the seed coat
will be broken down by decay over several months.

 *Artificial Vernilization:

In certain species and cultivars,
freezing of seedflats are required to break dormancy. Once planted and ready,
seed-trays are placed in a wet-box with relative humidity at exactly 32°F for
duration of no more and no less then 72 hours to help improve seed germination.