Red spider in the Conservatory.
 

Recommendations please?
Don

Red spider in the Conservatory.
 

On 12/09/2010 15:45, Donwill wrote:
Recommendations please?
Don
Red spider Mite I should have said.
Don

Red spider in the Conservatory.
 

On 12/09/2010 17:36, Sacha wrote:
On 2010-09-12 16:35:27 +0100, Donwill
said:

On 12/09/2010 15:45, Donwill wrote:
Recommendations please?
Don
Red spider Mite I should have said.
Don

Phytoseiulus
You said that with feeling!!!!!!!!!!!!

Red spider in the Conservatory.
 

On 12/09/2010 16:35, Donwill wrote:
On 12/09/2010 15:45, Donwill wrote:
Recommendations please?
Don
Red spider Mite I should have said.
Don

What sorts of plants are they on?
It affects the best strategy.

But ideally for ornamentals you want a long acting systemic miticide
that is compatible with the plants you want to stay alive.

Tweaking the humidity slightly will help.

If you don't care what lives and what dies then a sulphur candle is
pretty good as a total knock down. But it will play havoc with the soft
furnishings. OK in a dormant greenhouse though.

Its a bit too late in the season to do anything effective now.

Regards,
Martin Brown

Red spider in the Conservatory.
 

Donwill wrote:
Recommendations please?
Red spider Mite I should have said.

I found something that looked like a red spider mite, but it was HUGE.
Just under 1cm long, in fact. Not very mite-like, but looked /just/ like a
close up of a tiny one. No idea what it was, unless someone evil genius has
been going round the garden with a huge enlarger gun!

Too late in the season. They need warmth. (and you won't be able to use them after you've used insecticide)

They can be quite fiddly - you can't use them until the greenhouse/conservatory is warm enough and by then the red spider mite may have built up to more than they can handle - or to more than the number of phytoselius you can afford can handle ;-)

But at this stage of the season, in a greenhouse, the problem is going away - the red spider mite are breeding much more slowly. Not necessarily the case if your conservatory is kept warm all the year round, in which case you may do well with Phytoselius.

How much have you got? If at very low levels, removing the worst affected leaves and washing others with soapy water can go a long way.

Red spider in the Conservatory.
 

In article ,
lid says...
On 12/09/2010 22:08, Martin Brown wrote:
On 12/09/2010 16:35, Donwill wrote:
On 12/09/2010 15:45, Donwill wrote:
Recommendations please?
Don
Red spider Mite I should have said.
Don

What sorts of plants are they on?
It affects the best strategy.
Ipomoea, Morning glory, and Moon Flower.

But ideally for ornamentals you want a long acting systemic miticide
that is compatible with the plants you want to stay alive.

Tweaking the humidity slightly will help.

If you don't care what lives and what dies then a sulphur candle is
pretty good as a total knock down. But it will play havoc with the
soft furnishings. OK in a dormant greenhouse though.

Its a bit too late in the season to do anything effective now.

Regards,
Martin Brown
Thanks for that, They are now residing outside, they are too far gone I
think to recover, We thought it was leaf scorch to start with so they
got a head start on us.
Will sow more in Feb 2011.


The biological control is best, but at this time of year they are
allready starting to colour up ready for hibernation, and it doesn't work
that quickly. I would cut the tops of the plants away now and burn them
as that where most of the mites will be, then use a soft soap spray.
During winter have a thorough clean of the area and dispose of as much
plant material as possible and be ready in the spring to order the bio
control at the first sign of trouble, also try and keep the humidity up.

Some sprays do work but in my experiance not for long and anyway anything
strong enough to kill red spider mite is not going to be great for your
health!
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea