Guest guest Posted February 6, 2009 Report Share Posted February 6, 2009 Oleanders are Dying in San Diego By Ron Hamilton | Published Thursday, Feb. 5, 2009 A bacterium commonly identified with grape vines (Xylella fastidiosa) is the suspected cause of "oleander leaf scorch," which is resulting in the slow deaths of thousands of oleanders in San Diego County. Likely vectored by the glassy-winged sharpshooter (Homalodisca vitripennis), a recent San Diego invader, the disease is fatal with no known remedy. Oleander leaf scorch was first identified in Palm Springs around 1992 and then moved into Riverside, L.A., and Orange Counties. The first signs of infection are seen as an off-color shading and wilting of leaves, which eventually turn brown. It appears as if the plant needs water, but unfortunately this will not help. It may take some time for the entire plant to show signs of infection, but within one to two years the plant will be dead. Cutting of infected limbs may slow or prevent spread to the rest of the plant, but complete infection is unavoidable. Oleanders are found extensively in the median of freeways and backyards of California, and this will likely result in massive losses and eventual replacement at great cost. Oleanders are a hardy, dense shrub that can grow to heights of 25 feet and require little water or maintenance. Caltrans has planted approximately 25 million in Southern California. Of particular concern is the spreading of Xylella fastidiosa to other species, such as almonds, alfalfa, plums, and olive trees. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 7, 2009 Report Share Posted February 7, 2009 Good husbandry will prevent it! Remember when all the elms were meant to be dying? A guy contacted the authorities re prevention - organic etc and his info was spurned!--- On Fri, 2/6/09, Tony wrote:Tony Oleanders are Dying in San Diegooleander soup Date: Friday, February 6, 2009, 11:32 AM Oleanders are Dying in San Diego By Ron Hamilton | Published Thursday, Feb. 5, 2009 A bacterium commonly identified with grape vines (Xylella fastidiosa) is the suspected cause of "oleander leaf scorch," which is resulting in the slow deaths of thousands of oleanders in San Diego County. Likely vectored by the glassy-winged sharpshooter (Homalodisca vitripennis) , a recent San Diego invader, the disease is fatal with no known remedy. Oleander leaf scorch was first identified in Palm Springs around 1992 and then moved into Riverside, L.A., and Orange Counties. The first signs of infection are seen as an off-color shading and wilting of leaves, which eventually turn brown. It appears as if the plant needs water, but unfortunately this will not help. It may take some time for the entire plant to show signs of infection, but within one to two years the plant will be dead. Cutting of infected limbs may slow or prevent spread to the rest of the plant, but complete infection is unavoidable. Oleanders are found extensively in the median of freeways and backyards of California, and this will likely result in massive losses and eventual replacement at great cost. Oleanders are a hardy, dense shrub that can grow to heights of 25 feet and require little water or maintenance. Caltrans has planted approximately 25 million in Southern California. Of particular concern is the spreading of Xylella fastidiosa to other species, such as almonds, alfalfa, plums, and olive trees. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 7, 2009 Report Share Posted February 7, 2009 Maracuja, I wonder if colloidal silver might cure this condition. It could be used as a spray for the plants. Hmm..... - Maracuja oleander soup Friday, February 06, 2009 6:02 PM Re: Oleanders are Dying in San Diego Good husbandry will prevent it! Remember when all the elms were meant to be dying? A guy contacted the authorities re prevention - organic etc and his info was spurned!--- On Fri, 2/6/09, Tony wrote: Tony Oleanders are Dying in San Diegooleander soup Date: Friday, February 6, 2009, 11:32 AM Oleanders are Dying in San Diego By Ron Hamilton | Published Thursday, Feb. 5, 2009 A bacterium commonly identified with grape vines (Xylella fastidiosa) is the suspected cause of "oleander leaf scorch," which is resulting in the slow deaths of thousands of oleanders in San Diego County. Likely vectored by the glassy-winged sharpshooter (Homalodisca vitripennis) , a recent San Diego invader, the disease is fatal with no known remedy. Oleander leaf scorch was first identified in Palm Springs around 1992 and then moved into Riverside, L.A., and Orange Counties. The first signs of infection are seen as an off-color shading and wilting of leaves, which eventually turn brown. It appears as if the plant needs water, but unfortunately this will not help. It may take some time for the entire plant to show signs of infection, but within one to two years the plant will be dead. Cutting of infected limbs may slow or prevent spread to the rest of the plant, but complete infection is unavoidable. Oleanders are found extensively in the median of freeways and backyards of California, and this will likely result in massive losses and eventual replacement at great cost. Oleanders are a hardy, dense shrub that can grow to heights of 25 feet and require little water or maintenance. Caltrans has planted approximately 25 million in Southern California. Of particular concern is the spreading of Xylella fastidiosa to other species, such as almonds, alfalfa, plums, and olive trees. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 7, 2009 Report Share Posted February 7, 2009 Worth a try. Also plenty of good quality compost and worm casts. Mulching. No toxic insecticides or herbicides of course. Clean water. No artificial fertiliser. Seaweed and rock dust are good. Also systemic - Neem oil - 7 mls per litre slightly warm water, shake well and water in. Neem tends to solidify at lower temps, hence the slightly warm water.Maracuja--- On Fri, 2/6/09, Bob Banever <bbanever wrote:Bob Banever <bbaneverRe: Oleanders are Dying in San Diegooleander soup Date: Friday, February 6, 2009, 7:48 PM Maracuja, I wonder if colloidal silver might cure this condition. It could be used as a spray for the plants. Hmm..... - Maracuja oleander soup Friday, February 06, 2009 6:02 PM Re: Oleanders are Dying in San Diego Good husbandry will prevent it! Remember when all the elms were meant to be dying? A guy contacted the authorities re prevention - organic etc and his info was spurned!--- On Fri, 2/6/09, Tony > wrote: Tony > Oleanders are Dying in San Diegooleander soupFriday, February 6, 2009, 11:32 AM Oleanders are Dying in San Diego By Ron Hamilton | Published Thursday, Feb. 5, 2009 A bacterium commonly identified with grape vines (Xylella fastidiosa) is the suspected cause of "oleander leaf scorch," which is resulting in the slow deaths of thousands of oleanders in San Diego County. Likely vectored by the glassy-winged sharpshooter (Homalodisca vitripennis) , a recent San Diego invader, the disease is fatal with no known remedy. Oleander leaf scorch was first identified in Palm Springs around 1992 and then moved into Riverside, L.A., and Orange Counties. The first signs of infection are seen as an off-color shading and wilting of leaves, which eventually turn brown. It appears as if the plant needs water, but unfortunately this will not help. It may take some time for the entire plant to show signs of infection, but within one to two years the plant will be dead. Cutting of infected limbs may slow or prevent spread to the rest of the plant, but complete infection is unavoidable. Oleanders are found extensively in the median of freeways and backyards of California, and this will likely result in massive losses and eventual replacement at great cost. Oleanders are a hardy, dense shrub that can grow to heights of 25 feet and require little water or maintenance. Caltrans has planted approximately 25 million in Southern California. Of particular concern is the spreading of Xylella fastidiosa to other species, such as almonds, alfalfa, plums, and olive trees. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 7, 2009 Report Share Posted February 7, 2009 Maracuja, The neem is an interesting approach. I'm thinking of the existing plants in the wild... a 5 - 10ppm colloidal silver spray (perhaps mixed with some canola oil for adherence which also has insecticidal properties) might be a more practical solution. If growing your own, than yours sounds great. Bob - Maracuja oleander soup Friday, February 06, 2009 8:06 PM Re: Oleanders are Dying in San Diego Worth a try. Also plenty of good quality compost and worm casts. Mulching. No toxic insecticides or herbicides of course. Clean water. No artificial fertiliser. Seaweed and rock dust are good. Also systemic - Neem oil - 7 mls per litre slightly warm water, shake well and water in. Neem tends to solidify at lower temps, hence the slightly warm water.Maracuja--- On Fri, 2/6/09, Bob Banever <bbanever wrote: Bob Banever <bbaneverRe: Oleanders are Dying in San Diegooleander soup Date: Friday, February 6, 2009, 7:48 PM Maracuja, I wonder if colloidal silver might cure this condition. It could be used as a spray for the plants. Hmm..... - Maracuja oleander soup Friday, February 06, 2009 6:02 PM Re: Oleanders are Dying in San Diego Good husbandry will prevent it! Remember when all the elms were meant to be dying? A guy contacted the authorities re prevention - organic etc and his info was spurned!--- On Fri, 2/6/09, Tony > wrote: Tony > Oleanders are Dying in San Diegooleander soupFriday, February 6, 2009, 11:32 AM Oleanders are Dying in San Diego By Ron Hamilton | Published Thursday, Feb. 5, 2009 A bacterium commonly identified with grape vines (Xylella fastidiosa) is the suspected cause of "oleander leaf scorch," which is resulting in the slow deaths of thousands of oleanders in San Diego County. Likely vectored by the glassy-winged sharpshooter (Homalodisca vitripennis) , a recent San Diego invader, the disease is fatal with no known remedy. Oleander leaf scorch was first identified in Palm Springs around 1992 and then moved into Riverside, L.A., and Orange Counties. The first signs of infection are seen as an off-color shading and wilting of leaves, which eventually turn brown. It appears as if the plant needs water, but unfortunately this will not help. It may take some time for the entire plant to show signs of infection, but within one to two years the plant will be dead. Cutting of infected limbs may slow or prevent spread to the rest of the plant, but complete infection is unavoidable. Oleanders are found extensively in the median of freeways and backyards of California, and this will likely result in massive losses and eventual replacement at great cost. Oleanders are a hardy, dense shrub that can grow to heights of 25 feet and require little water or maintenance. Caltrans has planted approximately 25 million in Southern California. Of particular concern is the spreading of Xylella fastidiosa to other species, such as almonds, alfalfa, plums, and olive trees. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 7, 2009 Report Share Posted February 7, 2009 Bob, the powers that be will never agree to it! Too cheap and no big cut for Monsanto.I wouldn't aerosolise canola. People will be forced to inhale it. I wouldn't eat canola and would be unhappy to breathe it - many spray contractors are idiots and will do it in windy conditions.Mara--- On Fri, 2/6/09, Bob Banever <bbanever wrote:Bob Banever <bbaneverRe: Oleanders are Dying in San Diegooleander soup Date: Friday, February 6, 2009, 8:47 PM Maracuja, The neem is an interesting approach. I'm thinking of the existing plants in the wild... a 5 - 10ppm colloidal silver spray (perhaps mixed with some canola oil for adherence which also has insecticidal properties) might be a more practical solution. If growing your own, than yours sounds great. Bob - Maracuja oleander soup Friday, February 06, 2009 8:06 PM Re: Oleanders are Dying in San Diego Worth a try. Also plenty of good quality compost and worm casts. Mulching. No toxic insecticides or herbicides of course. Clean water. No artificial fertiliser. Seaweed and rock dust are good. Also systemic - Neem oil - 7 mls per litre slightly warm water, shake well and water in. Neem tends to solidify at lower temps, hence the slightly warm water.Maracuja--- On Fri, 2/6/09, Bob Banever <bbanever (AT) earthlink (DOT) net> wrote: Bob Banever <bbanever (AT) earthlink (DOT) net>Re: Oleanders are Dying in San Diegooleander soupFriday, February 6, 2009, 7:48 PM Maracuja, I wonder if colloidal silver might cure this condition. It could be used as a spray for the plants. Hmm..... - Maracuja oleander soup Friday, February 06, 2009 6:02 PM Re: Oleanders are Dying in San Diego Good husbandry will prevent it! Remember when all the elms were meant to be dying? A guy contacted the authorities re prevention - organic etc and his info was spurned!--- On Fri, 2/6/09, Tony > wrote: Tony > Oleanders are Dying in San Diegooleander soupFriday, February 6, 2009, 11:32 AM Oleanders are Dying in San Diego By Ron Hamilton | Published Thursday, Feb. 5, 2009 A bacterium commonly identified with grape vines (Xylella fastidiosa) is the suspected cause of "oleander leaf scorch," which is resulting in the slow deaths of thousands of oleanders in San Diego County. Likely vectored by the glassy-winged sharpshooter (Homalodisca vitripennis) , a recent San Diego invader, the disease is fatal with no known remedy. Oleander leaf scorch was first identified in Palm Springs around 1992 and then moved into Riverside, L.A., and Orange Counties. The first signs of infection are seen as an off-color shading and wilting of leaves, which eventually turn brown. It appears as if the plant needs water, but unfortunately this will not help. It may take some time for the entire plant to show signs of infection, but within one to two years the plant will be dead. Cutting of infected limbs may slow or prevent spread to the rest of the plant, but complete infection is unavoidable. Oleanders are found extensively in the median of freeways and backyards of California, and this will likely result in massive losses and eventual replacement at great cost. Oleanders are a hardy, dense shrub that can grow to heights of 25 feet and require little water or maintenance. Caltrans has planted approximately 25 million in Southern California. Of particular concern is the spreading of Xylella fastidiosa to other species, such as almonds, alfalfa, plums, and olive trees. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You are posting as a guest. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.