needle browning on Oregon Green Austrian Pine
john9
9 years ago
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Embothrium
9 years agoken_adrian Adrian MI cold Z5
9 years agoRelated Discussions
Am I losing my Austrian Pine?
Comments (12)I hate to say it, but I think your tree is definitely a goner. While I am no tree expert, I am a passionate amateur, so I have learned a few things. I am 100% certain that your tree is suffering from Dothistroma pini, otherwise known as Red Band Tip Blight. It is a fungal disease that can attack any tree, especially from age 30 on, but it especially attacks vulnerable trees. I think I read somewhere that Austrian Pines should be spaced 15 feet apart, but I can't find where I read that. At any rate, the middle tree looks extremely crowded from both sides, which is going to make it extremely vulnerable to disease. This probably explains why the other two appear to be doing alright. The reason I am so certain your tree has dothistroma is because of your extremely valuable and informative closeup of the needles. If you'll notice, the outer halves of the needles (the tips) are brown, but the inner halves (the bases) are still green. This is the unique hallmark of dothistroma. In addition, it typically starts from the bottom of the tree and works it way up. Considering how few green needles are left on your tree, it is probably more dead than alive at this point. Since it is so crowded out by the other two, I would just remove it. Otherwise the other two might become vulnerable as well from competition, not to mention the high possibility of infection from this extremely contagious disease. Also for this reason, you should educate yourself on the early symptoms of this disease and for diplodia so that you can hopefully nip disease in the bud before it takes over your other two trees, especially since they have been so close to the infected tree. It is possible to stop the disease if treated in time, but infection can be hard to detect until it is too late if you aren't vigilant. Also, try to remove the dead tree in dry, non-windy weather if at all possible because heat, rain, and wind are how the spores are spread. I have included some links to government and university sources about dothistroma so that you can learn about early symptoms, treatments, etc. There are plenty more such sites if you google "dothistroma." Good luck, and sorry about your middle tree. Laurel http://lancaster.unl.edu/factsheets/087.htm http://extension.missouri.edu/extensioninfonet/article.asp?id=1709 http://www.ipm.iastate.edu/ipm/hortnews/node/81 http://urbanext.illinois.edu/ShrubSelector/detail_problem.cfm?PathogenID=58 http://www.na.fs.fed.us/spfo/pubs/fidls/dothistroma/doth.htm http://www.forestryimages.org/browse/subimages.cfm?sub=688...See Morewhite pine - massive browning of needles
Comments (5)It is old needles. the new candles are still expanding. Here are some pics. The first 4 are the worst case of an 8'-10' seedling. I think only the new growth will remain on some branches after needle drop. The last 2 pics are a mature 80' (?)tree. The top looks green (last pic) but the rest has major browning. (As I look at that picture now, it almost looks like the browning needles may be from a different tree. I didn't think so when outside though) There could be two different problems. The 80' tree is near the recently died trees. The seedlings are a good distance away, but are growing as understory and could just be normal complainng that I am now more sensitive to because of the other big tree problems. Altho then when I saw so much of it around town, I got confused....See MoreMugo(?) pine yellow-brown needles
Comments (5)Hi Fotis, Don't, however, start watering any Pinus strobus on a regular basis. They do not like copious water and do like being on the dry side. You plant is a graft and would have been grafted also too, to a Pinus strobus (seedling). What you do have is a grafted-cultivar, and not a seedling. Hope that clears some things up, fer ya. And yes, of course, what you see is only natural, needle-shed. One more tip: clean out the dead needles with your hands. Dwarf conifers (particularly pines) build up needles in the inner of the plant and if not maintained, these extra needles can choke/kill a plant. The same applies to needle-build-up under a plant. 3" of pine needles is great and is free mulch. 6" (you wouldn't even know it's there if I hadn't told you...) will choke a conifer, too. Future Regards, Dax...See MoreWhat's wrong with my Austrian Pine?
Comments (12)I also live in a rural area, but in central Illinois. When I bought this place I had 40 6' Austrian pines put in with a tree spade. After approx. ten years I also noticed the same blighted branches, yellowed to dead needles, etc. I went to the local agency of the state forestry service. I had an infestation of a nematode that...(pardon my unscientific explanation) got under the bark and separated it from the actual tree trunk causing the tree to eventually die. I was told there was nothing to do to save the trees and, sure enough, they all died. I hope this isn't your problem but I would suggest contacting your state forestry people. They came to my home and inspected the trees and it was free! Good luck....See MoreEmbothrium
9 years agoken_adrian Adrian MI cold Z5
9 years agoEmbothrium
9 years agojohn9
9 years agojohn9
9 years agoEmbothrium
9 years ago
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