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An evergreen Tree growing to 30m by 8m at a fast rate. It is hardy to zone 6. It is in leaf all year, in flower from May to June, and the seeds ripen in October. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Wind. The plant is not self-fertile.
The plant prefers light (sandy), medium (loamy) and heavy (clay) soils, requires well-drained soil and can grow in nutritionally poor soil. The plant prefers acid, neutral and basic (alkaline) soils and can grow in very alkaline soil. It cannot grow in the shade. It requires dry or moist soil and can tolerate drought. The plant can tolerate maritime exposure.
Succeeds on all soil types, including chalk. Thrives in a light well-drained sandy or gravelly loam. Dislikes poorly drained moorland soils. Established plants tolerate drought. Requires a sunny position. A very hardy tree, it is extensively planted for timber and shelter, tolerating maritime exposure. Fast growing when young.
Plants are strongly outbreeding, self-fertilized seed usually grows poorly. They hybridize freely with other members of this genus. Leaf secretions inhibit the germination of seeds, thereby reducing the amount of plants that can grow beneath the tree.
Trees tend to be short-lived in cultivation. Plants in this genus are notably susceptible to honey fungus.
Genus - Pinus
Species - Nigra
Variety - Austriaca
Common name - Austrian Pine
Pre-Treatment - Required
Hardiness zones - 4 - 7
Height - 40-80' / 12 - 24 m
Spread - 20-40' / 6 - 12 m
Plant type - Tree
Vegetation type - Evergreen
Exposure - Full Sun
Growth rate - Medium
Soil PH - Acidic, Neutral, Alkaline
Soil type - Clay, laom, Sand, well drained
Water requirements - Average Water
Landscape uses - Feature Plant, Shade Trees, Street Trees
Leaf / Flower color - Green / --
GERMINATION INSTRUCTIONS
1. Place the seeds in a container with tepid water and soak them for 24 hours. Change the water and wait another 24 hours.
2. Put the seeds in a small plastic bag and cover with damp sand. Place the bag holding the seeds in the refrigerator for 1 months to stratify the seeds, which is preserving seeds in layers of moisture-laden peat, soil or sand. Check the sand and water as needed to maintain moisture. Don't allow the seeds to get soaked.
3. Fill small pots with compost. Place one or two pine seeds 4-5 mm deep in the compost in each pot.
4. Water the sand and compost to add moisture, then place the pots in a warm, sunny location. As the seedlings emerge and grow, the soil needs to remain moist, not wet.
5. Repot the pine trees into medium-sized pots in the fall. Grow them in the pots for the following season until they are large and strong enough for transplanting into the landscape.
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