Hi Michael, Our tree guy (from Lueders) was here just now spraying our hemlocks with horticultural oil, so I asked him whether we really still need to be spraying. He told me that because we had a cold winter three years ago, the numbers of adelgid were knocked back. But after two warm winters they are returning, and he has seen a lot this year. He isn't aware of any research showing that they are waning for good, unfortunately. According to him, regular horicultural oil treatments usually avoid the need for the more expensive and less environmentally friendly systemic treatments. He said it is also good for elongate scale, which also damages hemlocks and is not affected by cold winters. That's all I know - hope it helps.
Ann On Sun, Feb 10, 2019 at 9:05 PM Michael <[email protected]> wrote: > Prevalent in the area? A concern or worry sufficient enough to follow the > arborist's recommended 2x/year treatment at $250.00 an application?- > discounted a paltry 5% for a prepay due this week? Curious to know what > others in the area might do - any input would be appreciated. > Thanks! > -Michael > > > > -- > Sent from: http://lincoln.2330058.n4.nabble.com/ > -- > The LincolnTalk mailing list. > To post, send mail to [email protected]. > Search the archives at http://lincoln.2330058.n4.nabble.com/. > Browse the archives at https://pairlist9.pair.net/mailman/private/lincoln/ > . > Change your subscription settings at > https://pairlist9.pair.net/mailman/listinfo/lincoln. > >
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