Juniper Issue

Forum for discussion of Pines, Junipers, Cedar etc as bonsai.
Post Reply
Daluke
Aussie Bonsai Fan
Aussie Bonsai Fan
Posts: 1022
Joined: September 15th, 2014, 8:04 pm
Favorite Species: Juniper
Bonsai Age: 8
Location: Melbourne
Has thanked: 17 times
Been thanked: 105 times

Juniper Issue

Post by Daluke »

Hey guys? Is this a fungus? I was gonna treat with a copper oxide but thought I’d double check.

Any experienced guys have any idea?
You do not have the required permissions to view the files attached to this post.
longd_au
Aussie Bonsai Fan
Aussie Bonsai Fan
Posts: 340
Joined: July 31st, 2013, 9:59 pm
Favorite Species: Maple
Bonsai Age: 5
Bonsai Club: None
Location: Melbourne
Has thanked: 20 times
Been thanked: 61 times

Re: Juniper Issue

Post by longd_au »

They look like scale.
-----------------------------------------------------------
Dennis
A journey full of experiments
PeterH
Aussie Bonsai Fan
Aussie Bonsai Fan
Posts: 896
Joined: December 20th, 2008, 3:12 pm
Favorite Species: Next project
Has thanked: 59 times
Been thanked: 177 times

Re: Juniper Issue

Post by PeterH »

Looks like scale or mealy bug. For this I use a combination of confidor,mavrick and pest oil.
shibui
Aussie Bonsai Fan
Aussie Bonsai Fan
Posts: 7653
Joined: August 22nd, 2009, 8:41 pm
Favorite Species: trident maple
Bonsai Age: 41
Bonsai Club: Albury/Wodonga; BSV; Canberra; VNBC
Location: Yackandandah
Has thanked: 65 times
Been thanked: 1399 times
Contact:

Re: Juniper Issue

Post by shibui »

Looking at the thumbnail I thought maybe flowering but closer look I agree with the others. Almost certainly scale insects.
While Peter's mix will work I think that either pestoil or Confidor (if you can find it now) should be adequate. Just keep checking every few weeks for the following year to see if they start to come back.
http://shibuibonsai.com.au/" onclick="window.open(this.href);return false;
seephil
Aussie Bonsai Fan
Aussie Bonsai Fan
Posts: 31
Joined: September 4th, 2017, 9:31 am
Bonsai Age: 0
Location: Melbourne
Has thanked: 4 times

Re: Juniper Issue

Post by seephil »

I had a similar experience with scale affecting a few of my junipers. I got rid of it by using confider tablets, as I wasn't confident in using chemicals and sprays.
I also brushed as much of the scale off using a soft toothbrush and watered them using a reasonably high pressure spray. Within 2-3 weeks it disappeared completely.
User avatar
Gerard
Aussie Bonsai Fan
Aussie Bonsai Fan
Posts: 2656
Joined: October 7th, 2009, 12:32 pm
Favorite Species: pines
Bonsai Age: 16
Bonsai Club: BSV, Northwest, Northern Suburbs, VNBC
Location: Melbourne
Has thanked: 18 times
Been thanked: 48 times

Re: Juniper Issue

Post by Gerard »

I have heard that oils should be avoided on junipers yet 2 highly respected growers have suggested pest oil. I would appreciate some more information.
Q: Why are we all here?
A: Because we are not all there.
User avatar
treeman
Aussie Bonsai Fan
Aussie Bonsai Fan
Posts: 2836
Joined: August 15th, 2011, 4:47 pm
Favorite Species: any
Bonsai Age: 25
Location: melbourne
Has thanked: 28 times
Been thanked: 571 times

Re: Juniper Issue

Post by treeman »

You can go ahead and use oil but just be prepared for your juniper to go green and stay that way for a long time. The new growth will have the normal glaucous waxy covering again and be a normal colour. The important thing is to kill the scale.
Mike
Daluke
Aussie Bonsai Fan
Aussie Bonsai Fan
Posts: 1022
Joined: September 15th, 2014, 8:04 pm
Favorite Species: Juniper
Bonsai Age: 8
Location: Melbourne
Has thanked: 17 times
Been thanked: 105 times

Re: Juniper Issue

Post by Daluke »

I’ve given a spray of confidor. It seems like a lot dropped onto the soil. Is this ok to get into the roots?
User avatar
treeman
Aussie Bonsai Fan
Aussie Bonsai Fan
Posts: 2836
Joined: August 15th, 2011, 4:47 pm
Favorite Species: any
Bonsai Age: 25
Location: melbourne
Has thanked: 28 times
Been thanked: 571 times

Re: Juniper Issue

Post by treeman »

Daluke wrote:I’ve given a spray of confidor. It seems like a lot dropped onto the soil. Is this ok to get into the roots?
Yes no problem.
Mike
Post Reply

Return to “Pines and Junipers”