Botanical Nomenclature: Thuja occidentalis
Common Name: Swamp Cedar, Northern White-Cedar, Eastern White-Cedar, American Arborvitae, Eastern Arborvitae
Kingdom: Plantae
Clade: Tracheophytes
(unranked): Gymnosperms
Division: Pinophyta
Class: Pinopsida
Order: Pinales
Family: Cupressaceae
Genus: Thuja
Species: T. occidentalis
Thuja occidentalis (or Thuja vulgaris) is a coniferous plant in the Cupressaceae family of the genus Thuja.
It is a very leafy and intensely fragrant plant. It originates in the northeastern United States of America and southeastern Canada, and is one of the first American trees to acclimate in Europe. It was introduced to Europe in the 16th century.
The active principles of Tuia consist of an essence of complex composition and somewhat toxic due to the presence of a ketone, the tuiona (or tujona); The plant also contains tannins.
Thuja occidentalis ( english )
Thuja occidentalis seeds will usually germinate in 14-60 days, even under good conditions germination may be erratic.
Normally will only germinate with light so surface sow. Sow Thuja occidentalis seeds on the surface of a Peaty seed sowing mix at about 12°C.
Need to be "overwintered" before they will germinate.
Stratification; cold treatment or vernalization. Seeds of some species need just a couple of weeks, others 3 months. Seeds can be stratified in dampened peat or sand, in a plastic box or bag at 4°C or 5°C in a refrigerator. The seeds should not be frozen or in a wet medium. Very small seeds can be sown on the surface of their growing medium, in pots sealed in plastic bags, and kept in the 'fridge. Many vernalized seeds need light to germinate when they are sown in the "Spring".
Pre-chill Thuja seeds for 4 weeks.
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