When it comes to fungal diseases, there isn’t much that’s worse than hydrangea leaf spot. We’ve all seen a plant or two with it in our local garden centers. It’s one of the most common, and most aggravating fungal‐based diseases in the landscape. So what can we do about it? When we have a plant problem like Hydrangea Leaf Spot, did you know there are different remedies that can be used? You might already have a preferred method or product, but if you’re not sure, read through this article to get some great ideas on the trick to treating and preventing!I hate fungus. Mold, mildew, and lichen. I’m the kind of guy that gets his windows professionally cleaned every year so the sunlight can bake any visible traces of mold from their surfaces…because my OCD loves sunlight, a lot. So you can imagine how difficult it is for me to reconcile with regular rainfall often creating mold within hours of its precipitation. If you’ve ever dealt with hydrangea leaf spot – or seen its ugly yellow/orange leaves when you attack the fungus with your horticultural oil sprayer – you feel my pain; it ain’t pretty. But here’s some good news: I’ve found a great fungicide that works almost flawlessly at dousing hydrangea leaf spot fungus…and I’m going to share it with you today!
Best Fungicide For Hydrangea Leaf Spot
Introduction
Hydrangeas are a beautiful flowering bush that can be grown in many different parts of the United States. Hydrangea bushes are perfect for adding color to your landscape, as they come in a wide variety of colors, including blue, purple, pink, white and green. The flowers of these plants bloom in large clusters and produce an attractive display. Unfortunately, if you want to grow hydrangeas at home or plant them commercially in your business landscaping, then there is always the potential that you could run into an issue called hydrangea leaf spot. This problem can cause an unsightly appearance on the leaves of these plants and sometimes even destroy their ability to regrow after winter dormancy. Luckily though there are some fungicides that can help control this disease so that it doesn’t completely kill off your investments!
What Is Hydrangea Leaf Spot?
Hydrangea leaf spot is a fungal disease that causes leaves to turn brown and die. It occurs when the fungus Phomopsis hydrangeae strikes, and it can be devastating for your hydrangeas if you’re not familiar with how to spot it.
The fungus overwinters in dead leaves on the ground. After spring rains or watering, the spores are splashed onto new growth where they begin to grow into colonies of blackish spots on the upper surface of leaves. As these spots grow larger, they become more yellowish in coloration with a dark green halo surrounding them. The centers of these spots will eventually turn brown as well as surrounding areas on secondary veins within 7–10 days after initial infection occurs; eventually all parts of affected tissue will die off except for an area around each lesion which remains evergreen due to its low metabolic rate relative to other plant parts nearby during late summer months under ideal conditions such as those found indoors under artificial light sources during wintertime periods when sunlight may not reach back far enough into dense foliage patches due their placement under eaves or covered porches where rainwater can collect without being flushed away by wind gusts from passing storms outside nearby buildings (such as between two walls set together end-to-end).
How To Prevent Hydrangea Leaf Spot
You can prevent hydrangea leaf spot by keeping plants healthy, watering them properly and preventing moisture from accumulating. Remove diseased leaves and plant resistant varieties. You may also use fungicides to control the disease.
Can Hydrangea Leaf Spot Kill Plants?
Hydrangea leaf spot is a fungal disease that can pose serious problems to the health of your hydrangeas. It’s caused by several species of fungi, including Phomopsis spp., Phyllosticta spp., Mycosphaerella lini and Septoria lactucae. These fungi can be spread through rainwater, insects (such as leafhoppers), people and tools that have contacted infected hydrangea plants or leaves.
Fungal diseases often enter plants through wounds caused by mowers, pruners or wind damage. The fungus enters these wounds through its spores and begins to grow on the plant’s leaves, stems and buds as they develop into flowers over time – hence why you’ll see symptoms appear earlier in summer than they do in fall/winter months when less new growth occurs on your hydrangeas each year!
How Do You Treat Hydrangea Leaf Spot?
Hydrangea leaf spot is a fungus that can be treated with fungicide, which can be applied in various ways.
- Spray the leaves of infected plants in the morning, when they are dry and before 10am. This will help to prevent fungal spores from developing on plant surfaces during wet weather conditions. You should only spray if there are no rain clouds in the forecast for at least six hours after application.
- Spray again in the late afternoon or evening, right before sunset (between 4pm and 6pm), when plants have dried off enough that most of their surfaces are not moist anymore. Again, wait until it looks like it won’t rain within six hours after spraying so as not to encourage fungal growth.*
Which Fungicides Are Best For Hydrangea Leaf Spot?
Fungicides are the best way to control and treat leaf spot. The most effective fungicides for hydrangea leaf spot are:
- Copper sulfate
- Mancozeb (maneb/mancozeb)
- Daconil 2787/Daconil 28-D (chloroneb)
You should apply the fungicide according to label directions, which may vary depending on what brand you use. For example, some brands may require you to spray once every seven days while others recommend spraying every 14 days or 21 days. You can also use an oil-based horticultural oil as a preventative measure against fungal diseases like hydrangea leaf spot; this will help prevent new infections from forming on newly emerging leaves while they’re still tender and green rather than brown and dry.
Be sure to choose the best fungicide for hydrangea leaf spot to control outbreaks.
Be sure to choose the best fungicide for hydrangea leaf spot to control outbreaks. Choose a fungicide with a high rate of control, one that is safe for use on hydrangeas, and one that is easy to apply.
Conclusion
If you’re looking for an effective way to control hydrangea leaf spot, you need to choose a fungicide that will prevent and treat it. Copper-based fungicides are best for treating newly infected leaves, while sulfur-based fungicides help with prevention. There are many different types of fungicides available in garden stores or online from trusted sources like Amazon. When choosing which one is right for your plants, be sure to consider their ingredients and whether they will work on other kinds of fungus as well as hydrangea leaf spot.
Be sure you pick up some copper-based spray if your bushes have already been infected by hydrangea leaf spot since this type works better when applied directly on new infections instead of preventing them beforehand. However, it’s still important to get both types because they can also help control other fungal diseases like black spot disease and powdery mildew while working well together without causing any problems between each other’s effects!
Bonide 775 Copper Fungicide Rtu Natural 1 Qt
Price : $10.97
Features :
- CONTROLS PLANT DISEASES – Liquid Copper Fungicide helps control powdery mildew, downy mildew, black spot, peach leaf curl, rust, and many other listed diseases.
- PROTECTION FOR PLANTS – Designed for use on listed vegetables, roses, fruits, nuts, herbs, ornamentals and turf.
- ORGANIC GARDENING – Approved and suitable for all of your organic gardening needs. It can even be used up to the day of harvest.
- CONTAINS COPPER – The active ingredient of Liquid Copper is Copper Octanoate, or Copper Soap. Copper makes a great option for use on all of your plants.
- READY TO USE – This product is conveniently ready to use when it arrives. The spray nozzle makes this product easy to deploy.
Additional Info :
| Item Dimensions | |
| Height | 12 Inches |
| Width | 2.5 Inches |
| Length | 4.75 Inches |
| Weight | 1 Pounds |
Garden Safe 511038 Garden SafeFungicide, 24 oz – 1 count
Price : $5.98
Features :
- FOR ORGANIC GARDENING: Can be used up to day of harvest – OMRI (Organic Materials Review Institute) Listed.
- INSECTICIDE/FUNGICIDE/MITICIDE: Three garden products in one!
- READY-TO-USE SPRAY: Spray for complete coverage of all plant tissue.
- FOR USE ON: Roses, flowers, houseplants, ornamental trees and shrubs, fruits and vegetables.
- PREVENTS LISTED FUNGAL DISEASES: Apply weekly to every 2 weeks until the potential for disease is no longer present.
Additional Info :
| Item Dimensions | |
| Height | 0.88 Inches |
| Width | 0.21 Inches |
| Length | 0.37 Inches |
| Weight | 1 Pounds |
Bonide 811 Copper 4E Fungicide 16oz (473ML)
Price : $15.99
Features :
- CONTROLS PLANT DISEASES – Liquid Copper Fungicide helps control powdery mildew, downy mildew, black spot, peach leaf curl, rust, and many other listed diseases.
- PROTECTION FOR PLANTS – Designed for use on listed vegetables, roses, fruits, nuts, herbs, ornamentals and turf.
- ORGANIC GARDENING – Approved and suitable for all of your organic gardening needs. It can even be used up to the day of harvest.
- CONTAINS COPPER – The active ingredient of Liquid Copper is Copper Octanoate, or Copper Soap. Copper is a naturally occurring chemical which makes it a much safer option for use on all of your plants.
- EASY TO APPLY – Product instantly mixes with water and should be applied using either a hose-end sprayer or tank sprayer. Carefully read and use according to label directions.
Additional Info :
| Color | Copper |
| Item Dimensions | |
| Height | 1 Inches |
| Width | 1 Inches |
| Length | 1 Inches |
| Weight | 1 Pounds |
BioAdvanced 701250 Disease Control for Roses, Flowers and Shrubs Garden Fungicide, 32-Ounce, Concentrate
Price : $17.98
Features :
- SYSTEMIC FORMULA: The systemic formula cures and prevents listed diseases for roses, flowers, shrubs, or even houseplants
- DISEASE CONTROL: Fungicide controls Black Spot, Powdery Mildew, Crabapple Scab, Boxwood Blight, and more
- RAINPROOF PROTECTION: Systemic rainproof protection lasts up to 2 weeks
- COVERAGE AREA: Makes up to 42 gallons of spray
- RESTRICTIONS: Not for sale in NY
Additional Info :
| Color | Concentrate |
| Item Dimensions | |
| Height | 10.25 Inches |
| Width | 5 Inches |
| Length | 2.65 Inches |
| Weight | 2 Pounds |
Dr. Earth 8007 Ready to Use Disease Control Fungicide, 24-Ounce
Price : $9.49
Features :
- 100% organic and natural crafted blend
- Provides continuous feed for several weeks
- Available in a 24 oz. size
- Ready to use disease control fungicide
- Controls powdery mildew, rust, black spot, peach leaf curl, shot hole, leaf blotch, scab, dollar spot, brown rot and other plant diseases
- Coverage of plant’s foliage necessary for maximum control
- This product contents 24 ounces
- This product contents 24 ounces
Additional Info :
| Item Dimensions | |
| Height | 4 Inches |
| Width | 11 Inches |
| Length | 2 Inches |
| Weight | 1.5 Pounds |