Bayer Garden Fungus Fighter Plus, 800 ml

As far as i can tell this product has cured downy mildew on my most of my sunflowers on first application, and rose black spot on my roses and the mildew on the rest of the sunflowers on second application. The three sunflower photos show a nasty infection, a nearly-defeated infection, and a cured plant. The photos are of three different plants but they all started out infected and give a good idea of the clean-up process. My only regret (my naivety not the product!) is I didn't buy it before the season started and apply it as soon as I planted out the sunflowers and when the roses started to get new leaves. Next year I will use before the problems start! On the other hand one does always have to be mindful about causing resistance and I admit I'm not sure how to balance early use and over-use.

(Not to be used on fruit trees & vegetables which will be eaten) Im not sure if it will cure black spot (i don't think there is a cure?) but it will help to control it if you re-apply it every 4 weeks especially during the warmer months when its the right temperature for funguses to spread, ie, wet summers in the uk. You will need to remove all affected foliage or cut it back hard if badly infected, clear away the leaves & try to keep the base of the plant clear so air can circulate. I managed to control it using this product which being systemic should be absorbed into the plant, however some Black Spot stubbornly did re-appear so you do need to respray & make sure you cover both on top & underneath the plant. I also like the fact that it doesn't contain an insecticide which is the main reason i bought it since so many others do. The price from 3rd party sellers on Amazon is way to expensive, you can buyfor £5 from B'N'Q

Trifloxystrobin and tebuconazole combination is extremely affective at dealing with many fungi (including blight, though not officially for home use). However, if anyone reading this is planning to use this on edible plants, PLEASE look at the pre-harvest intervals (PHI) for each chemical and wait accordingly. I have used this to control blight on tomatoes and potatoes as both inhibit spore production (potatoes can be ~30 - 35 days PHI!). If you remove most affected parts then apply, it can be hold of till harvest which is impressive for home use. Again, do research as I can see a few people are buying on this premise and the PHI depends on light/climate. There are also restrictions on how many times it can be applied to a single plant.

I was really impressed with the effects of this. I inherited several roses with viral/fungal problems. After a few weeks of using this, the roses look very healthy. Please note if you're reading this that I also deadheaded flowers which looked poor, as well as pruning/carefully disposing of infected leaves to help the roses' chances. I also used this spray on clematis which were developing powdery mildew/wilt and it worked a treat. In fact, I spray this on most plants as a precaution due to the amount of fungal infections the plants in my garden seem to have. I highly recommend this.

Worked on Clematis to cure fungus, but didn't work on others, had absolutely no effect , think it even manged to cause more damage , but do not want to be too harsh as im not an expert.

Fungus Fighter Plus failed to have any effect on a simple case of white mildew on the leaves of squashes - I went through 3 bottles last Saturday (25 August 2018), saw no change by Tuesday (28 August) so bought another three bottles for immediate application - now seven days since first application the mildew is gaining - not a single leaf shows any improvement. Six bottles - what a waste of money. I doubt they all came from one bad batch, because I bought them all from Amazon in two separate purchases

This has definitely helped with a fungal growth on a quince tree. Although it will be some months before we see if it has stopped the dreaded Quince Leaf Blight there are noticeable reductions in the large spots/patches on the trunk and limbs. Well it, the quince tree, is going to get another drenching of Bayer's Fungus Fighter very soon, whether it likes it or not, in the hope that this year the blossom and the leaves will stay on the tree for more than a couple of weeks! I'll try to remember to keep you all posted.

This product works extremely well. My poor roses started to get that black spotted fungle infection on their leaves which started to spread to my other plants. I then bought this again from amazon and sprayed each leaf "well" and after a few days I could see that the leaves were looking better and then by thr second treatment, about 3 weeks later, my plants were looking so much happier again!! This product only loses one star because on my first order last year the spray nozzle didn't work at all and I had to transfer to contents to another bottle I had to make up. But apart from that it's great.