BonideRose Shield Systemic Rose & Flower Drench, 40 oz Ready-to-Use Long Lasting Disease & Insect Protection

Works great to prevent black spot and pests!

I live in Southern Florida and my roses get it all. Disease, bugs, and worst of all chili thrips. I applied this product to one of my rose beds and all of the roses in that one bed are looking absolutely beautiful. I ran out of the solution towards the end of the bed and the last few roses that didn’t get treated are not looking nearly as good. My only complaint is cost. It says one bottle treats 20 roses but really that’s a stretch. It treats about 10-12 roses and I have over 100 rose bushes so the cost becomes exorbitant. If I could buy it in bulk that would be so much better.

My roses had aphids early in the season. I tried controlling by spraying the plants but didn't like that it left them shiny and sticky. I purchased this product and immediately used on all of my roses making a note to reapply in two months. It worked almost immediately and I haven't seen an aphid since. I skipping reapplying and now have plenty to use at the beginning of the growing season next Spring before aphids get out of hand.

I've been fighting black spot on my viburnum and ixora for years. The fungus has killed off a lot of plants and i've tried several "cures". So far, Rose Drench is the only thing I've found that works. It's not cheap but I can treat all my plants with 1 bottle and do it every 3 or 4 months and do keep an eye on the plants for any signs the fungus is returning. This is the best solution I've found. It says on the bottle don't use on container plants but I have been putting it on some of my potted annuals that regularly get powdery mildew and white flies. So far so good!

I tried 2 other products. This didn't help even a little.As a botanist, I recommend removing all infected foliage, and remove all the mulch and debris under the infestation. I actually had to use a shop vac! Then I hate to recommend Bayer. Bayer bought Monsanto, the GMO people. Problem is now better after 2 years, I still have black spot. More advise, call your county extension service office, they know the most about the plants and problems of your specific location.

Out of town for 6 weeks in early spring but came back and roses were fine.

Low value for money, need much more solution for plants. The recommendation of using 1 quart of water per rose plant, as specified for treating with a particular solution, seems insufficient for thorough watering. This bottle is for 2.5 watering cans of 2 gallons each. It takes about .5 to 1 watering can per rose to thoroughly soak the soil and reach the roots.Roses generally require deep watering to encourage root growth deep into the soil, which helps the plant access nutrients and remain healthy, especially in hotter, drier climates. Deep watering typically involves providing enough water to moisten the soil to a depth of 12-18 inches, which often requires more than 1 quart of water per plant, especially in sandy soils or during peak summer months.

It didn’t help with black spots at all, it looks even worse. Japanese beetle Just having a feast at my roses. I wish I could return it but it’s over 30 days but there is no way for me to know if it works right after application. Do not waste your money.