digger
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Joined: Sun Mar 09, 2008 11:53 pm
Location: Oregon, USA

Bonsai Insects

I have a Bonsai evergreen juniper that is at least 35 years old it has always been outside, this year the needles on a portion of the tree have
turned brown and look pretty much dead. I did discover that it has scale which I sprayed with and oil spray and it seemed to take of the problem for a short time, but they returned. Checked the soil and found small yellow, what look like eggs. I removed all of the soil down to the roots and removed all the "eggs" and replaced with new fresh soil, watered with a liquid feed and now I'm wondering if I need to treat the soil.
Any suggestions ?
irishgal

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Gnome
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Joined: Wed Jul 05, 2006 4:17 am
Location: Western PA USDA Zone 6A

digger,

Scale are very tenacious and whatever course of action you take will have to be repeated in order control successive generations.
[url]https://woodypests.cas.psu.edu/FactSheets/InsectFactSheets/html/Juniper_Scale.html[/url]
[url]https://gardening.wsu.edu/library/lpro002/lpro002.htm[/url]
[url]https://www.care2.com/greenliving/homemade-insecticidal-soap.html[/url]
[url]https://www.ext.colostate.edu/pubs/insect/05547.html[/url]
Is this tree new to you? I ask because if is the "yellow eggs" might have been slow release fertilizer.

[img]https://www.szkolkarstwo.pl/images/article/2004/04/442/kulki_4.jpg[/img]

Norm

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