JBA Blight Guard 500ml Concentrate for Potatoes and Tomatoes - concentrate soloution that can be mixed to make 250 litres to prevent blight and help produce healthier crops

Used weekly on tomatoes, potatoes & kale - effective as no late blight last year. Worth purchasing.

I have used it once, it has to be used every week. It is too early to tell how effective it is against tomato blight. Time will tell

Very impressed with this product. Every year I’ve had blight on my tomatoes. But having used this product in summer 2025 I had no cases of blight at all!! Let’s see what happens in 2026?

A good purchase @ highly concentrated . Amazon cheaper than manufacturer

Used to try and avoid potato blight used once too early to know how useful this product will be

Seems to be able to stay active after rain where other sprays wash off

Arrived promptly and was as described, worked well, protected outside tomato plants

This really worked. 2 applications and no blight on tomatoes in greenhouse or outside this year