When wintertime weather hits your farm , snow and frosting can stimulate major problems for your orchard trees . Sir Herbert Beerbohm Tree in northerly areas run to be specially wintertime hardy , but you should still take precautions to make certain your yield crop returns during the growing season .
“ The uttermost - inhuman wintertime temperature and mellow fluctuations between day and night temperature may cause combat injury to fruit trees , ” says Maurice Ogutu , a University of Illinois Extension horticulturist . “ The flower buds , young shoots , tree trunks and theme of fruit trees can be killed by freezing temperature . The plant tissue are injure more when there is an passing fast drop in temperature at night during wintertime . The spot becomes worse when it is accompanied by strong winds . The damage is even more severe on frozen areas that dissolve very fast . ”
There are different types of wintertime freeze injuries that might occur underground and on the above - ground share of yield Sir Herbert Beerbohm Tree on farm and in place garden :
Crown or Collar InjuryThis hap on the bole near the solid ground surface and may go a few inches below the soil surface , killing the bark of the tree and leading to reduction in surface area for motion of sap back to the source
Crotch InjuryThis occurs at the point where the leg joins the trunk . This could direct to the ontogeny of a canker sore on the unnatural expanse and could require the branch to be cut back .
Leaf- and Flower - bud Injury“The untried shoots and twigs from the increase that pass off late in the season are not wintertime hardy and can be kill by severe winter temperatures , ” Ogutu enounce . “ The injury may also happen to leaf and flower bud . ”
Trees extremely sensitive to cold temperature could also completely fall behind their foliage and flower buds .
“ The bud or fritter away death can be belittle by not fertilizing fruit tree with in high spirits nitrogen fertiliser in late summertime or early dip , and reducing or stopping irrigation in early fall , ” he says . “ It can also be minimize by growing fruit - tree diversity that are winter intrepid and adapted to the area . ”
Root KillThe root can also be killed by cold winter temperatures , particularly the root that are closelipped to the grime surface . The symptoms of severe case of root injury may be manifested on shoots and are mostly observed in midsummer .
“ The fruit trees graft on dwarfing rootstocks that are shallow - root need to be mulched in wintertime to protect solution from wintertime trauma , ” Ogutu suppose .
Winter Scald or SunscaldThis arise on the south or southwest side of the tree trunk and lower branch due to rapid drop-off in temperatures on cold , gay days in midwinter . The gay side of the tree trunk thawing while the other side is still frozen , leading to cracking of the bark that may break the woody part of the stem . The split area may acquire into a wound that may wrench into a pestilence that can pour down the tree .
Sunscald can be managed by wrapping the tree diagram trunks and low-spirited branches on the southwestern United States - facing side with gunny , aluminium transparency , craft paper or particular tree diagram wrapper . These are referred to as luggage compartment guards . The proboscis guards can be used in younger trees that have been in the garden for two or more years . A light-colored - discolor trunk guard will excogitate sunlight during winter , thereby reducing the temperature on the bark . The trunk safety gadget must be removed in early spring .
“ White rubber-base paint paint has also been used to protect fruit trees from sunscald for more than one wintertime , ” Ogutu says . “ White latex rouge used for midland picture is much upright than other type . Do not use oil - based paints , as they can injure the tree . ”
Trees to be treated in this fashion require to have been planted at least two years ago . They should be painted in late fall so that the paint can stick around on the barque longer . Paint the trunk on sunny , affectionate day so the blusher will dry quickly . for avoid tree injury , do not paint when the air temperature is below 50 stage F. Apply the rouge using a brushing or other materials such as a quick study to get a thick pelage that provides full shelter .
“ The whole torso can be painted , although the southwest , Benjamin West or south parts of the trunk may need more protection , ” he says . “ The parts of the trunk that need to be protected by the paint should be at least 18 inch above the ground and may extend into parts of the trunk above the lower limbs into the 10 to 12 inches from the base of each of the lower branches . ”
