It is likely that no native American evergreen is more prevalent in the North American landscape. Arborvitae is a hardy pyramidal coniferous tree usually cultivated in one of its many shrubby forms. This native of eastern North America has flattened feathery sprays of soft, scale-like, medium to dark green foliage that may turn shades of green and brown in winter. The leaves emit a pungent odor when bruised. Its dense branches often curve upwards, giving mature trees a soft, attractive look. The small tan female cones are not ornamentally significant.
Arborvitae performs best in full to part sun and acidic to neutral soil with average drainage. It appreciates some protection from winter sun and wind, which can cause leaf scorch. It may also need protection from heavy snow and browsing deer. Extremely cold-hardy and highly versatile, arborvitae is an excellent choice for screens, hedges or foundation plantings.
Information source: www.Learn2Grow.com.
Genus - Thuja
Species - Occidentalis
Common name - Northern White Cedar
Pre-Treatment - Required
Hardiness zones - 3 - 7
Height - 3-60' / 0,90 - 18 m
Spread - 3-25' / 0,90 - 8 m
Plant type - Tree / Shrub
Vegetation type - Evergreen
Exposure - Full Sun, Partial Sun
Growth rate - Medium
Soil PH - Acidic, Neutral
Soil type - Loam, sand
Water requirements - Average, moist
Landscape uses - Feature Plant, Foundation, Hedges, Mixed Border, Screening / Wind Break
Leaf / Flower color - Green, Dark Green / --
|Germination||1. Pour 1/4 cup of vermiculite or sand into a plastic sandwich bag. Add 3 tablespoons of water. Set the bag aside for 30 minutes to allow the vermiculite or sand to soak up the water.|
2. Drain excess water from the bag. Place arborvitae seeds in the planting medium or moist vermiculite. Seal the bag, and place it in the refrigerator for 60 days.
3. Pour moist seed-starting soil into a nursery flat. Insert craft sticks into each corner of the flat.
4. Sprinkle the contents of the plastic bag over the surface of the planting medium in the flat. Cover this layer with a 3-5 mm (1/8") layer of sand or vermiculite. Place the flat into a plastic bag, and adjust it so that the sticks hold the plastic away from the planting medium. Set the flat in an area sheltered from direct sun. Keep the temperature between +18-+23C (65-75F). The seeds germination time - 14-40 days.
5. Open the plastic bag when the seeds sprout. They need air circulation at this time, so make sure the bag is opened completely, but keep the flat inside the bag. Remove the flat from the bag when the seedlings have two sets of leaves. Place the flat in bright, but indirect, sunlight. (info source: eHow.com)