Did you know that fertilizers and fungicides are the best method to make your plant grow? Tropicana, Miracle Grow, and Mrs.Grow all make great products but I have a different product that is better than them all. My name is Linda Antwiler and I have 8 acres of Rhododendrons. A fungicide is a substance applied to plants or some non-living structures in order to kill specific fungi (organisms) that may be spreading disease or damaging the health of the organism(s). In other words, it’s a substance used to kill fungus. Outdoor in the FLorida heat and then an indoor cold snap can mean that getting your rhododendrons to bloom will be tough for the following year. As a nurseryman, I have to think about the next three years. Of course, the winter weather will have a lot to do with it—too much rain or too much frost, and you may need to go out of your way to spray fungicide for rhododendrons in the spring. A fungal disease called Powdery Mildew can be devastating for rhododendrons, but there are steps you can take to prevent it from ever occurring. Knowing the best fungicide for rhododendrons can help prevent the disease from causing problems before it even occurs.

Best Fungicide For Rhododendrons

Introduction

Fungal diseases affect the growth of rhododendron and reduce the aesthetic quality of its foliage. If a fungal disease is left untreated, it can eventually kill the plant. To prevent a fungal disease from attacking your rhododendrons, it’s important to use fungicides early on. There are many different types of fungicides, but not all are equally effective against every type of fungal disease that affects your rhododendron plant. Below, we’ll explore three types of fungicide (Daconil, Confidor and Mancozeb) and consider which is best for treating the specific type of fungal disease that’s affecting your plant.

Daconil

Daconil is an effective fungicide for rhododendron. It’s a systemic fungicide and can be applied to the soil or as a foliar spray. Although Daconil is not effective against powdery mildew, it does provide some control of this disease. It also doesn’t prevent brown rot (Rhizoctonia), rust (Puccinia) or other localized infections.

Confidor

Confidor is a systemic fungicide that can be used to treat many types of fungal diseases on rhododendrons, other plants, and roses. It’s available in liquid and powder form, so you should be able to find it at your local garden center or nursery.

If you have a large number of plants affected by powdery mildew (and other diseases), Confidor may not be your best option because it only comes in 2-pound packages. If this is the case for you, consider using one of these other products instead:

Mancozeb

Mancozeb is the best fungicide for rhododendrons. A fungicide made from zinc, Mancozeb is effective against a number of fungi including Phytophthora root rot and powdery mildew. In addition to being available as a liquid suspension or wettable powder, Mancozeb is also sold in granular form. The granular formulation can be broadcasted over large areas or applied to individual plants by hand.

Because it’s so versatile, there are many uses for Mancozeb: It can be used on azaleas and other flowering shrubs; it can be used with different carriers like dry flowables; it can even be integrated into soil around trees and shrubs before planting them!

The best fungicide for rhododendrons is Mancozeb.

As you’ve seen, there are many options when it comes to fungicides for rhododendrons. The best is Mancozeb, which is a systemic fungicide that’s safe enough to use on people and pets. It prevents powdery mildew and rust from developing, as well as leafspot and black spot.

If you’re looking for an organic option, consider copper sprays—but be sure not to apply them in the heat of summer or during freezing temperatures!

Conclusion

Our professional recommendation is to use Mancozeb fungicide to control rhododendron fungal issues. If you are unsure about any of the products that you have purchased then we recommend taking them back for a refund or replacement.