Time to spray Leylandii for cypress aphids

[Woody82]

Hi Guys,

 

just wondered when the best time to spray for Cypress Aphids are?? have a leylandii hedge which needs attention. I heard in spring with two hits is good....should i spray now?? any advice would be great!! cheers

[18 stoner]

Bump!

 

I know this thread is a couple of years old but perhaps some well informed boffs may be able to help?

[GardenKit]

Ahha. I have a couple of leylandii type things outside my house which seem to attract millions of midges, to the point that I am considering felling them.

 

Are these midges then actually Cyprus Aphids, and is there something I can do to get rid of them?

[18 stoner]

Putting the connies through a 9" vermeer would sure get rid of the majority of them😍

 

In serious mode, I'd say if there's been lots of flying insects around them for years, and the connies haven't gone brown yet would indicate they aren't cypress aphid.

 

Edit; On the flip side of that, if they aren't trimmed the browning will not be as evident unless it's a very bad infestation.

Edited March 22, 2014 by 18 stoner

[GardenKit]

These are slower growing types, just the two of them each side of the front gate. They are over 25 years old and about 15ft high.

 

There have always been midges around them, but last summer one was literally heaving with them. If I bashed it with a big stick they would fall onto the ground in a heaving mass.

No sign of browning on the outside, but pretty dry and dead looking inside. Only ever trimmed each side of the path.

 

Spray with insecticide? or petrol, followed by a match?

[kev7937]

Do they actually cause a problem in anything other than tightly clipped hedges ?

[GardenKit]

These things cause me a problem when I brush against the trees when cutting the grass. They get in my hair and up my nose, and down my shirt, and in my ears.

 

Then I cut around the weeping willow and get a dose of green aphids.

 

The prospect of getting the saw out is becoming more appealing.

[Graham]

These are slower growing types, just the two of them each side of the front gate. They are over 25 years old and about 15ft high.

 

There have always been midges around them, but last summer one was literally heaving with them. If I bashed it with a big stick they would fall onto the ground in a heaving mass.

No sign of browning on the outside, but pretty dry and dead looking inside. Only ever trimmed each side of the path.

 

Spray with insecticide? or petrol, followed by a match?

 

If they're just midges then the trees are probably a nice shelter for them.

[GardenKit]

I honestly have no idea what they are, but last year they left the tree at dusk and plastered themselves all over our lit windows. We had to keep the windows shut all the time.

 

I had sort of forgotten about them until I saw this thread.

 

Will have to do something about it before the summer, assuming they are still lurking in there somewhere.

[Lyn Ed]

has anyone else noticed leylandi and similar browning off on the side that faces the wind, nearly all of them around our way have, we are quite near the coast, just wondering if it was just the wind or combination of wind and salt air.