Dormant/emergent spray for stone fruit

ahajmano(sunset 23, Mission Viejo CA)January 16, 2014

Hello all,

Dormancy is breaking super early thanks to a heat wave here in Cali. The majority of my stone fruits however are still silver tip, and have not begun blooming yet. I would like to get in my winter dormant spray. UC extension recommends an application of spinosad and dormant oil. I have a few questions:

What brand/type of dormant oil is popular on the forums?
Can you mix spinosad and dormant oil so I only need to apply 1 time this month?

Thanks for your responses!

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Scott F Smith(6B/7A MD)

Most people use any horticultural oil. I prefer a dormant-only oil, those are thicker and I expect they smother pests better. Golden pest spray oil is one such dormant-only oil.

I'm not sure why they are recommending spinosad in dormant season, its a waste for us since the bugs are all hibernating but maybe in California there is a reason. It can be combined with the oil. Make sure to also look into if you need copper (shot hole) or lime-sulphur (peach leaf curl).

Scott

    Bookmark   January 16, 2014 at 11:25PM
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drew51 SE MI Z5b/6a

Just something I noticed is I read conflicting info about mixing dormant oil and lime sulfur, but i figured it out. it will kill leaves, but is ok to use if dormant. The labels were confusing. I use this mix. But cannot really comment on how well it works for a few years. I might switch to other products too. i have it on hand, so I'm using it.

    Bookmark   January 16, 2014 at 11:57PM
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Kippy(SoCal zone 10. Sunset Zone 24)

I would love to hear from social people on what they are doing this odd year

84 here today. If the trees had leaves. Oil would burn them.

    Bookmark   January 17, 2014 at 1:02AM
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ahajmano(sunset 23, Mission Viejo CA)

I tried spraying the trees yesterday, and was dissapointed at how much over-spray I had. I consumed almost an entire gallon of spray and only hit 5 small (5'X5') trees.

    Bookmark   January 17, 2014 at 11:52AM
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Scott F Smith(6B/7A MD)

Thats a problem in dormant spray. I make the stream more narrow and move it along the branches; it takes practice to get good with that but you use less spray than with a broad setting.

Scott

    Bookmark   January 17, 2014 at 1:25PM
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drew51 SE MI Z5b/6a

"84 here today. If the trees had leaves. Oil would burn them."

Well it could burn the bark too if hot enough! Oil can be used on leaves if temps are not high, and it won't hit 84 here till June. Oil and sulfur a no no on leaves.

    Bookmark   January 17, 2014 at 1:46PM
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ahajmano(sunset 23, Mission Viejo CA)

I doubt I am going to get my chill hours this year

    Bookmark   January 20, 2014 at 12:00PM
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