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#1
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Ceanothus expired
I spent most of yesterday digging out an old Ceanothus bush that had
suddenly taken a turn for the worst. Half of it died back a month ago and was pruned and burnt. The cuts showed a red orange ring in the diseased wood. The rest of it succumbed in a matter of a few days from healthy looking green bushy plant to distinctly dead. It seems they are succeptible to verticillium wilts. What other shrubby plants should I not plant back in the large border ap where this came from, and how deep should I dig out for the old roots? There is a mushroomy smell and white hyphae in another part of the same border, but AFAICT a clear space between that and the affected bush. I don't really know much about these fungal diseases of plants. Thanks for any advice. Regards, Martin Brown |
#2
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Ceanothus expired
"Martin Brown" wrote in message oups.com... I spent most of yesterday digging out an old Ceanothus bush that had suddenly taken a turn for the worst. Half of it died back a month ago and was pruned and burnt. The cuts showed a red orange ring in the diseased wood. The rest of it succumbed in a matter of a few days from healthy looking green bushy plant to distinctly dead. It seems they are succeptible to verticillium wilts. What other shrubby plants should I not plant back in the large border ap where this came from, and how deep should I dig out for the old roots? There is a mushroomy smell and white hyphae in another part of the same border, but AFAICT a clear space between that and the affected bush. I don't really know much about these fungal diseases of plants. Thanks for any advice. Regards, Martin Brown Don't panic! Ceanothus do just die when they reach a certain age and although the cause may well be fungal it is not necessaraly going to affect anything else, clear the ground revitilise the soil and if replacing with another evergreen wait till spring. -- Charlie, Gardening in Cornwall http://www.roselandhouse.co.uk Holders of National collections of Clematis viticella and Lapageria rosea cultivars |
#3
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Ceanothus expired
On Mon, 10 Sep 2007 13:56:04 +0100, "Charlie Pridham"
wrote: Ceanothus do just die when they reach a certain age and although the cause may well be fungal it is not necessaraly going to affect anything else, clear the ground revitilise the soil and if replacing with another evergreen wait till spring. Any idea what the "certain age" is? I've had one for about 15 years. Steve |
#4
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Ceanothus expired
On Mon, 10 Sep 2007 13:56:04 +0100
"Charlie Pridham" wrote: "Martin Brown" wrote in message oups.com... I spent most of yesterday digging out an old Ceanothus bush that had suddenly taken a turn for the worst. Half of it died back a month ago and was pruned and burnt. The cuts showed a red orange ring in the diseased wood. The rest of it succumbed in a matter of a few days from healthy looking green bushy plant to distinctly dead. It seems they are succeptible to verticillium wilts. What other shrubby plants should I not plant back in the large border ap where this came from, and how deep should I dig out for the old roots? There is a mushroomy smell and white hyphae in another part of the same border, but AFAICT a clear space between that and the affected bush. I don't really know much about these fungal diseases of plants. Thanks for any advice. Regards, Martin Brown Don't panic! Ceanothus do just die when they reach a certain age and although the cause may well be fungal it is not necessaraly going to affect anything else, clear the ground revitilise the soil and if replacing with another evergreen wait till spring. Verticillium is a controversial subject. Opinion is divided as to whether it remains in the soil to infect further plantings. Your plant sounds like it does show signs. You can make a angled cut and look for characteristic streaking in the wood. Make sure to sterilize your tools after. As a maple collector I deal with Verticillium on a regular basis. But especially in the Acer palmatum world, it is very common to buy infected plants. (In fact it is sometimes difficult to find clean plants even from the most reliable producers, because the parents don't have enough clean wood). Further, the consensus among maple people seems to be that the "sudden" form of the wilt isn't transmissible by the soil (although the slow form may be). So I don't hesitate to replace with a maple when I lose one in the ground to the wilt. What I do find is that culture conditions, like poor drainage, do as much to encourage the verticillium already present in the plants as much as anything. So sometimes if I'm really having a hard time in a spot I change species. For example in one spot I have already killed 3 palmatums and a very rare A. olivaceum, this year I'll put in campestre 'Carnival'. -E -- Emery Davis You can reply to ecom by removing the well known companies Questions about wine? Visit http://winefaq.hostexcellence.com |
#5
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Ceanothus expired
On Sep 10, 2:24 pm, Steve Wolstenholme
wrote: On Mon, 10 Sep 2007 13:56:04 +0100, "Charlie Pridham" wrote: Ceanothus do just die when they reach a certain age and although the cause may well be fungal it is not necessaraly going to affect anything else, clear the ground revitilise the soil and if replacing with another evergreen wait till spring. Any idea what the "certain age" is? I've had one for about 15 years. Dunno exactly. This one was more than 20 years old, maybe 25 years. According to some websites there is a slow burning fungal infection that kills them all eventually. I was a bit concerned at the rapidity of its demise and was worried that it might infect other things in the border. There is a lovely daphne odora not too far away and I would hate to lose that the same way. Regards, Martin Brown |
#6
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Ceanothus expired
"Steve Wolstenholme" wrote in message ... On Mon, 10 Sep 2007 13:56:04 +0100, "Charlie Pridham" wrote: Ceanothus do just die when they reach a certain age and although the cause may well be fungal it is not necessaraly going to affect anything else, clear the ground revitilise the soil and if replacing with another evergreen wait till spring. Any idea what the "certain age" is? I've had one for about 15 years. Steve If the going is easy and they have grown quickly they tend to go quicker but even in dry ground 15 is getting to old age, the one exception I have noticed is Ceanothus Trewithian Blue which is a big tree like plant and you do seem to be able to cut this back hard and prolong its life somewhat. -- Charlie, Gardening in Cornwall http://www.roselandhouse.co.uk Holders of National collections of Clematis viticella and Lapageria rosea cultivars |
#7
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Ceanothus expired
"Martin Brown" wrote in message oups.com... On Sep 10, 2:24 pm, Steve Wolstenholme wrote: On Mon, 10 Sep 2007 13:56:04 +0100, "Charlie Pridham" wrote: Ceanothus do just die when they reach a certain age and although the cause may well be fungal it is not necessaraly going to affect anything else, clear the ground revitilise the soil and if replacing with another evergreen wait till spring. Any idea what the "certain age" is? I've had one for about 15 years. Dunno exactly. This one was more than 20 years old, maybe 25 years. According to some websites there is a slow burning fungal infection that kills them all eventually. I was a bit concerned at the rapidity of its demise and was worried that it might infect other things in the border. There is a lovely daphne odora not too far away and I would hate to lose that the same way. Regards, Martin Brown When they go they tend to go quickly, sometimes a branch at a time and usually in summer not winter, you may well be correct about the fungus, I have never had problems even replanting ceanothus in the same spot. The only reason I have stopped growing them is I found it hard to deal with the large gaps left! -- Charlie, Gardening in Cornwall http://www.roselandhouse.co.uk Holders of National collections of Clematis viticella and Lapageria rosea cultivars |
#8
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Ceanothus expired
On Tue, 11 Sep 2007 09:46:52 +0100, "Charlie Pridham"
wrote: "Steve Wolstenholme" wrote in message .. . On Mon, 10 Sep 2007 13:56:04 +0100, "Charlie Pridham" wrote: Ceanothus do just die when they reach a certain age and although the cause may well be fungal it is not necessaraly going to affect anything else, clear the ground revitilise the soil and if replacing with another evergreen wait till spring. Any idea what the "certain age" is? I've had one for about 15 years. Steve If the going is easy and they have grown quickly they tend to go quicker but even in dry ground 15 is getting to old age, the one exception I have noticed is Ceanothus Trewithian Blue which is a big tree like plant and you do seem to be able to cut this back hard and prolong its life somewhat. I think that's the variety I have. It's certainly blue and tree like. It flowers until late September and then gets cut back. Steve -- Stephen Wolstenholme Neural Planner Software Ltd EasyNN-plus. The easy way to build neural networks. http://www.easynn.com |
#10
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Ceanothus expired
"Charlie Pridham" wrote in message
... "Steve Wolstenholme" wrote in message ... On Mon, 10 Sep 2007 13:56:04 +0100, "Charlie Pridham" wrote: Ceanothus do just die when they reach a certain age and although the cause may well be fungal it is not necessaraly going to affect anything else, clear the ground revitilise the soil and if replacing with another evergreen wait till spring. Any idea what the "certain age" is? I've had one for about 15 years. Steve If the going is easy and they have grown quickly they tend to go quicker but even in dry ground 15 is getting to old age, the one exception I have noticed is Ceanothus Trewithian Blue which is a big tree like plant and you do seem to be able to cut this back hard and prolong its life somewhat. Last time I went to Powys Castle (about 7 or 8 years ago) there was a Trewithian Blue, said to be around 70 yrs old there - and it looked every day of it, not really very pretty. Otherwise my experience is like everybody else's, they don't really make old bones. -- Rod My real address is rodthegardeneratmyisp |
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