What spray is best to use on tomato and cucumber plants?

Hello,

I have noticed a few pests on my plants so need a spray to get rid of them but not sure what is best to use, there are so many I'm confused.

 

What are the pests?

 

Are they growing in a greenhouse or polytunnel or outside?
First of all identify the pests.
Greenfly don't really bother tomatoes or cucumbers.
Whitefly are a common greenhouse problem, not really bothered by insecticide sprays, best control is biological, can buy encarsia wasps that predate them.
Red spider mite I find to be less of a problem on tomatoes, increase humidity if possible, again biological controls work best.
Caterpillars and slugs get out with a head torch and manually remove.
Commercial growers and nurseries use biological controls.
Cucumbers and tomatoes like different growing conditions, cucumbers preferring higher humidities to tomatoes, but less heat.

 

Not sure what pests they are but here's a couple of pics:










The toms are both inside and outside but both have little black flying things on them, the cucumbers are outside.

 

The cues have pollen beetles, nothing to worry about, they are blackfly, (aphids) on the toms, I'm guessing, and they rarely become a pandemic on toms.

I'd leave them alone.

 

Pollen beetles eat a bit of pollen and then move to the next flower carrying pollen with them to pollinate it.
The hairs on tomatoe plants deter most aphids.

 

Your best allies against pests on edibles are natural predators and, to a certain extent, companion planting. African marigolds definitely deter whitefly on greenhouse crops and wasps clear up aphids if you don't mind sharing the space with a nest.

 

That's great news, thank you.