Depending on the scale, horticultural oil may control overwintering stages. Pine tortoise scale is brown and found on twigs. Pine needle scale is a white, elongated scale found on the needles. Stressed trees are more susceptible to attack. This occurs in mid to late April or when needle growth is about half developed.īark beetles bore into trunks making small holes scattered up and down the trunk. Pesticides are only effective when caterpillars are moving from overwintering sites to new shoots. The insects can be found in the shoots during May. European Pine shoot moth causes young shoots to fall over. All types produce honeydew which may support sooty mold. Some adelgids will appear as white cottony growths on the bark. Common PestsĬommon insect pests include spider mites and pine needle scale. Large, fast growing deciduous trees should be spaced far enough (20' - 24') between rows to prevent shading pines. Planting TipsĪustrian pines are spaced 8' - 12' within a row and 12' - 18' between rows. Winter buds have a distinct silver color. The attractive bark has dark furrows with gray or gray-brown mottled ridges. Austrian pine needles are stiff, usually straight, 2" - 4" long and are in groups of 2. Noted for its dark, rich green foliage, Austrian pine provides a pleasant contrast with other plants. Young trees are pyramidal in shape, but become oval with age and, on some sites, flat topped. It has thrived for over 200 years in some of the worst soil and climate conditions America has to offer.Ĭan grow up to 60' high with a 20' - 40' spread. Over 217 million were planted during the nation's great dust bowl shelterbelt project. Its forebears were likely worshipped by the Romans over 2000 years ago. It was introduced to the United States in 1759. The Austrian Pine is a native of Austria, northern Italy and Yugoslavia. Landscapers use the dark beauty of these trees for backdrops, but it is also an excellent specimen tree because of its leaf pattern. This stately tree can be seen in parks, along streets, in residential landscapes, and as farm windbreaks throughout much of the United States. Potted trees should be moved to a sheltered location for winter.The Austrian Pine (Pinus nigra) is an extremely tolerant pine of adverse soil conditions and air pollution. Depending on the variety, this can take several years. Continue to grow the seedlings outdoors in their larger pots until they are large enough to transplant into the landscape.The seedlings should be at least 2 inches tall before transplanting. In spring, transplant the seedlings into larger pots filled with peat-based potting mix.The seeds should sprout within 30 to 60 days continue to grow them in their small pots until spring. This may require placing them in a basement or garage under grow lights. Sow the seeds in small pots, just barely covering the seeds, and set them in a bright location at a temperature of about 60 degrees.This cold stratification improves your chances for successful germination. Mix the seeds with moist sand, place them in a clear plastic bag, and refrigerate them for three to seven weeks.If the cones are reluctant to dry, you can put them in a warm spot (100 to 110 degrees) until the scales open.
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