Italian Edward Durell Stone pine ( Pinus pinea ) , genuine to its source , is " molto contento , " that is very contented , in Mediterranean - like climates , and it is cold - fearless in U.S. Department of Agriculture plant hardiness zones 7 to 11 . Also known as umbrella pine for the rounded condition it eventually attain , it can gain 100 feet out of doors . However , Italian Oliver Stone pine is often sold as a miniature Christmas tree in far - from - fitting climate . Although it tolerates ironic atmosphere better than most pines , it still is n’t likely to be a happy houseplant for long than 6 workweek . After that , if not give supererogatory attention , your Italian stone pine may terminate up pit dead .
Step 1
Move your Italian stone pine to the brightest window you have if the plant is fleeceable on top but slough acerate leaf underneath . Either indoors or out , if the tree is n’t receiving the full sunlight it prefers , the most shaded part is likely to die first . For an outdoor specimen , cut back any other nearby trees that could be immobilise its Inner Light .
Step 2
Grasp your indoor plant life by the root of its trunk and ease it gently out of its pot , if it appear to be sag and discolored even though it is well - water . Then curb the hue of its root word . If they look drear brownish rather than tan , they have probably been too well watered and are decompose .
Step 3
make clean off the roots of the Italian stone true pine by swosh them in a container of water , and cut back out all of the glum and mushy ones , leaving only the firm and lighter - colored . As you are working , dim the shears after each cut in a mixture of 1 part bleach to 9 persona of water system , outwear plastic gloves to protect keep your hands from the harsh blanching agent . Once you have finished , immerse the pine ’s outlive roots quickly into and out of that answer as well . Repot the plant in a refreshful quick - draining medium , such as a mix of half peat moss and half fir tree barque . Water that medium only enough to keep it lightly moist .
Step 4
Look for fungi around the base of a discolored out-of-door Sir Herbert Beerbohm Tree , as that is a frequent index of root rot . If you see sign of it , rake away any mulch to aid the soil dry out a bit and abstain from water the Sir Herbert Beerbohm Tree except during drought . The Italian rock pine tree should be planted in well - drained grime that let in a good amount of sand or crushed rock . If your ground is schmalzy , drill a few 2 - inch - encompassing drain hollow 18 column inch deep in the stain at intervals around the pine tree ’s dribble argument , and sate the trap with a mix of peat and pumice .
Step 5
Give an indoor tree some air , even if only from a slowly rotating overhead fan . Move it out of doors in midspring . The Italian stone pine will allow temperatures down to at least 20 degrees Fahrenheit when in the ground , but you likely should n’t put on the line more than illumination freezes with a young potted plant . invest it in a shaded and protect spot first — such as on a cement stoup that soaks up heat — gradually adapt it to more tripping and more cold . leave behind it out as late as potential in the fall as well .
Tip
The Italian Isidor Feinstein Stone pine ’s seeds , also called pine nut , are edible .
Warning
This pine can suddenly drop horizontal arm for no apparent reason and even in calm atmospheric condition . This typically happens in summer . If growing the tree diagram alfresco , keep it by from places in the landscape chaffer by people and pets .
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