Flower Copper Oxychloride Fungicide – 50% Wettable Powder for Mildew & Fungi

Flower Copper Oxychloride Fungicide is your first line of defense against the most common threats in your crop. It is a broad-spectrum contact fungicide formulated with 50% copper, designed to prevent and stop the spread of mildew, alternaria, and other fungal diseases that threaten your harvest.

Are you risking your entire harvest to fungi?

There is nothing worse than walking into your grow room or checking your outdoor garden and seeing those dreaded yellow spots, grey fuzz, or white powder on the leaves. You know exactly what it is, and you know that the clock is ticking.

Fungal infections like mildew or alternaria don't just look bad; they are aggressive. If you ignore the early signs, spores spread like wildfire, suffocating your plants and rotting your buds from the inside out. In a matter of days, months of hard work, electricity bills, and dedication can turn into a total loss, leaving you with nothing but frustration.

The solution is simpler than you think. Flower Copper Oxychloride acts as an impenetrable shield. By applying this wettable powder, you create a hostile environment where fungi simply cannot survive or reproduce, stopping the infection dead in its tracks and saving your crop.

Why this fungicide is a game-changer (Features & Benefits)

You don't need complicated chemicals to keep your plants healthy. Here is why this classic solution is a staple for smart growers:

• High Concentration (50%): Because it contains a high percentage of active copper, you get maximum effectiveness with less product, which means greater protection for every euro you spend.
• Contact Action: It stays on the surface of the leaf without penetrating the plant tissue. This allows you to prevent spores from germinating without altering the internal chemistry of your plant.
• Broad Spectrum: It works against mildew, anthracnose, bacteriosis, and more. This gives you the peace of mind of having a single product that covers multiple threats.
• Blue Wettable Powder: It dissolves easily and leaves a visible trace. This helps you see exactly where you have sprayed, ensuring you don't miss a single spot.

How to use it for maximum protection

Using copper correctly is key to avoiding phytotoxicity while killing the bad guys. Follow these steps to get it right:

1. Dosage: Mix between 3 to 4 grams per liter of water. For this 50g sachet, you can prepare up to 12-15 liters of fungicidal solution.
2. Application: Use a sprayer to cover the entire plant. It is crucial that you spray the underside of the leaves, as that is where many pests and fungi hide.
3. Timing: Apply it during the vegetative stage or very early flowering. Avoid spraying buds directly if they are already developed to prevent residue.
4. Frequency: Repeat every 10-14 days as a preventive measure, or every 7 days if you already see symptoms (always respecting the safety period before harvest).

If you are dealing with pests as well as fungi, check out our range of insecticides cannabis to keep your grow room completely clean.

Frequently Asked Questions

When should I stop using copper oxychloride?

You should stop using it at least 15 days before harvest to ensure no residue remains on the flowers. It is best used during the vegetative phase and the first weeks of flowering.

Can I mix it with other fertilizers?

It is generally compatible with most products, but do not mix it with amino acids or products with a very acidic or alkaline reaction, as this could damage the leaves. If you need nutrients, browse our cannabis fertilizers section for compatible options.

Is it suitable for organic farming?

Yes, copper is a mineral allowed in organic agriculture, provided it is used within the established limits. It is a favorite among growers who want to avoid synthetic systemic chemicals.

Does it work for powdery mildew?

While it helps, copper is more specific for downy mildew, alternaria, and bacteriosis. For specific powdery mildew issues, you might want to look at other specialized copper fungicides or sulfur-based products.

Personal Experience of Pevgrow’s CEO (Alan)

I've learned the hard way that prevention is infinitely cheaper than cure. I always keep a sachet of Copper Oxychloride in my kit, especially for outdoor crops where humidity is unpredictable. My trick is to apply a preventive layer just before the autumn rains start.

It's old school, but it works. The blue tint it leaves on the leaves gives me peace of mind because I know exactly which parts are protected. Just remember: don't go overboard with the dosage; more isn't always better. Stick to 3g/L and your plants will stay healthy without stress.