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Aucuba Japonica(Spotted Laurel) Dead Plants
Hope someone can help!?
Over the past two years, the Spotted Laurel in a large garden I've been working in have suffered almost total devastation with mass dying of the shrubs. I have been aware that the property next door is suffering from the same problem. The plants have started wilting first, then leaves blackening and dying, then subsequently the whole plant dies right down to the roots. I have posted/uploaded some photos, ranging from a healthy looking tip to the inside of the dead trunk/stems showing the state left on the inside. Also a couple of the dying and dead foliage/stems. There are other 'laurels'(Bay,Portuguese and English) as well as various regular shrubs and trees of other species which are totally unaffected. Up to now, apart from asking anyone(gardeners/garden centre staff) whom I think might know the problem, I have cut out and burned all affected plants as they occur and now have very little left with no signs of it abaiting. Thank you for any morcel of advice however small. The phots will either be linked on this post or on the Garden Photographs section under 'Dying Aucuba!!' Terry |
#2
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Position: Full sun, semi-shade Planting Area: Fertile well-drained soil Flowers: Spring Hardiness: Hardy Height x Spread: 180cmcm x 180cm (6ft) How to care for your plant: This plant is easy to maintain and look after. When you receive your new plant, soak in a bucket of water for 30 minutes and then plant to the same depth as the soil level in the pot. Water regularly until established. We recommend adding fertilizer when planting, ideal are bone meal or Fish Blood & Bone. After flowering cut out all dead, diseased and unwanted growth and trim to desired shape and size. Dispatch Information: Orders are dispatched within 1-3 working days and should be delivered within 1-5 (working) days from the day of dispatch.
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Fruit Trees |
#3
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Aucuba Japonica(Spotted Laurel) Dead Plants
On 19/02/2012 20:33, Terry Deans wrote:
Hope someone can help!? Over the past two years, the Spotted Laurel in a large garden I've been working in have suffered almost total devastation with mass dying of the shrubs. I have been aware that the property next door is suffering from the same problem. The plants have started wilting first, then leaves blackening and dying, then subsequently the whole plant dies right down to the roots. I have posted/uploaded some photos, ranging from a healthy looking tip to the inside of the dead trunk/stems showing the state left on the inside. Also a couple of the dying and dead foliage/stems. There are other 'laurels'(Bay,Portuguese and English) as well as various regular shrubs and trees of other species which are totally unaffected. Up to now, apart from asking anyone(gardeners/garden centre staff) whom I think might know the problem, I have cut out and burned all affected plants as they occur and now have very little left with no signs of it abaiting. Thank you for any morcel of advice however small. The phots will either be linked on this post or on the Garden Photographs section under 'Dying Aucuba!!' Terry [image: http://i40.tinypic.com/w2o7yq.jpg] [image: http://i43.tinypic.com/kswh4.jpg] [image: http://i42.tinypic.com/dea44y.jpg] [image: http://i39.tinypic.com/ftlu6u.jpg] [image: http://i41.tinypic.com/2uqjfyv.jpg] Aucuba are normally pretty resistant to disease. What you are experiencing could well be related to root rot. Whether this is from wet soil conditions or due to infestation by Phytophthora is difficult to say (partial waterlogging can, however, make Phytophthora infection more likely). If it was solely due to waterlogged soil I would expect other species of plants to be affected. Phytophthora, however, is a strange pathogen that can decimate certain species whilst leaving others unaffected, so my money would be on Phytophthora. If it is Phytophthora there is really nothing that can be done, or is worth doing, to treat the Aucuba. Probably the best thing is to see what plants remain healthy, and put in more of those. I wouldn't bother trying to plant healthy Aucuba to replace those that have been lost. -- Jeff |
#4
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Thanks again, you're a very kind person and I'm so grateful for your knowledge (or sources!) and how soon you respond. Many thanks. Terry Deans |
#5
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Aucuba Japonica(Spotted Laurel) Dead Plants
On 20/02/2012 17:14, Terry Deans wrote:
'Jeff Layman[_2_ Wrote: ;951351']On 19/02/2012 20:33, Terry Deans wrote:- Hope someone can help!? Over the past two years, the Spotted Laurel in a large garden I've been working in have suffered almost total devastation with mass dying of the shrubs. I have been aware that the property next door is suffering from the same problem. The plants have started wilting first, then leaves blackening and dying, then subsequently the whole plant dies right down to the roots. I have posted/uploaded some photos, ranging from a healthy looking tip to the inside of the dead trunk/stems showing the state left on the inside. Also a couple of the dying and dead foliage/stems. There are other 'laurels'(Bay,Portuguese and English) as well as various regular shrubs and trees of other species which are totally unaffected. Up to now, apart from asking anyone(gardeners/garden centre staff) whom I think might know the problem, I have cut out and burned all affected plants as they occur and now have very little left with no signs of it abaiting. Thank you for any morcel of advice however small. The phots will either be linked on this post or on the Garden Photographs section under 'Dying Aucuba!!' Terry [image: http://i40.tinypic.com/w2o7yq.jpg] [image: http://i43.tinypic.com/kswh4.jpg] [image: http://i42.tinypic.com/dea44y.jpg] [image: http://i39.tinypic.com/ftlu6u.jpg] [image: http://i41.tinypic.com/2uqjfyv.jpg]- Aucuba are normally pretty resistant to disease. What you are experiencing could well be related to root rot. Whether this is from wet soil conditions or due to infestation by Phytophthora is difficult to say (partial waterlogging can, however, make Phytophthora infection more likely). If it was solely due to waterlogged soil I would expect other species of plants to be affected. Phytophthora, however, is a strange pathogen that can decimate certain species whilst leaving others unaffected, so my money would be on Phytophthora. If it is Phytophthora there is really nothing that can be done, or is worth doing, to treat the Aucuba. Probably the best thing is to see what plants remain healthy, and put in more of those. I wouldn't bother trying to plant healthy Aucuba to replace those that have been lost. -- Jeff Hey Jeff. You've answered a previous query of mine regarding Crocosmia and, once again, you seem to have put your finger on(or very near!) the problem here. I have checked out Phytophthora on Wikipedia and it sounds the likely culprit. Although, plenty of laurels are mentioned, but not Aucuba! But it does state laurels and that it can hit a variety of woody shrubs and cited cases involving Beech and Rhodadendron/azaelia in Cornwall 2003. I am in Plymouth, right on the Cornish border. Thanks again, you're a very kind person and I'm so grateful for your knowledge (or sources!) and how soon you respond. Many thanks. You are most welcome. That's the whole point of newsgroups - you just pass on the assistance you've obtained from someone else. FYI - some info on Aucuba and Phytophthora: http://www.walterreeves.com/gardenin...ucuba-wilting/ http://www.ces.ncsu.edu/depts/pp/not...od21aucuba.htm -- Jeff |
#6
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I'm do a small gardening maintenance business in Plymouth, SW England and, whilst I've always been a keen labourer from an early age in the garden (mainly veg gardens!), my eight years doing this work has opened up such a vast diversity of potential knowledge to me. I love to learn and regard myself as a developing 'apprentice', on the job, if you understand what i mean. I've learnt and progressed a fair bit but connecting with people like yourself who appear to have such a depth of knowledge is a privilage for me. Helps me to set goals for myself. And, apart from that, your courtesy and genuine interest in helping us novices with our issues is the feature of your responses which I admire and am grateful for the most. Best wishes Terry |
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