---
product_id: 718612389
title: "Arber Organic Rose Fungicide RTS - Black Spot & Powdery Mildew, 16 oz"
brand: "arber"
price: "$65.64"
currency: USD
in_stock: true
category: "Arber"
url: https://www.desertcart.us/products/718612389-arber-organic-rose-fungicide-rts-black-spot-and-powdery-mildew
store_origin: US
region: United States of America
---

# Controls 3 major rose diseases Hose-end sprayer ready Biological active microbe Arber Organic Rose Fungicide RTS - Black Spot & Powdery Mildew, 16 oz

**Brand:** arber
**Price:** $65.64
**Availability:** ✅ In Stock

## Summary

> 🌹 Spray Smart, Grow Proud: The Organic Shield Your Roses Deserve!

## Quick Answers

- **What is this?** Arber Organic Rose Fungicide RTS - Black Spot & Powdery Mildew, 16 oz by arber
- **How much does it cost?** $65.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/718612389-arber-organic-rose-fungicide-rts-black-spot-and-powdery-mildew)

## Best For

- arber enthusiasts

## Why This Product

- Trusted arber brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Eco-Friendly Power:** Biological active ingredient, not harsh copper or sulfur dust—safe for blooms and environment.
- • **Preventive Protection:** Start early and spray every two weeks to keep your roses flawless all season.
- • **Sustainable Packaging:** 16 oz recyclable bottle made with 30% post-consumer recycled material.
- • **Triple Threat Defense:** Targets black spot, powdery mildew, and rust for healthier, lush roses.
- • **Effortless Application:** Hose-end sprayer attached—spray straight from the bottle, no mixing needed.

## Overview

Arber Organic Rose Fungicide RTS is a 16 oz ready-to-spray biological fungicide designed to prevent black spot, powdery mildew, and rust on roses. Featuring a hose-end sprayer for easy application, it uses beneficial microbes instead of copper or sulfur dust, making it safe for blooms and eco-conscious gardeners. Start early and maintain a bi-weekly spray cycle for optimal disease control, all packaged in a recyclable bottle with 30% recycled content.

## Description

desertcart.com : Arber Organic Rose Fungicide RTS - Black Spot & Powdery Mildew, 16 oz | Biological, not a copper or sulfur dust - hose-end sprayer, nothing to mix : Patio, Lawn & Garden

## Features

- THE THREE DISEASES THAT DEFOLIATE ROSES - Black spot strips leaves from the bottom up, powdery mildew grays new growth, rust pits the undersides. All three take hold in humid spells and all three are on the list.
- WHAT IT IS AND HOW TO USE IT - A 16 oz bottle of biological fungicide with the hose-end sprayer already fitted. Attach the hose, set the dial to ARBER, spray until the foliage is dripping. Nothing to mix.
- A BIOLOGICAL ACTIVE, NOT A MINERAL DUST - It is a bacterium rather than a copper or sulfur dust, which is a different kind of product to be spraying over open blooms.
- START EARLY AND KEEP THE CYCLE - Fungicides protect far better than they cure. Begin as the leaves come out, repeat every two weeks, and spray in calm weather with no rain forecast for 24 hours.
- HOW IT WORKS - The active is a beneficial microbe that settles onto leaf and root surfaces, where disease would otherwise establish. Read and follow the label before use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DV3QD6CK |
| ASIN  | B0DV3QD6CK |
| Best Sellers Rank | #2,195 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #97 in Insect & Pest Repellent Sprays |
| Brand Name | ARBER |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,270) |
| Date First Available  | January 25, 2025 |
| Included Components | bottle |
| Indoor Outdoor Usage | Indoor, Outdoor |
| Item Form | Liquid |
| Item Highlight | Biological, not a copper or sulfur dust - hose-end sprayer, nothing to mix |
| Item Volume | 16 fluid ounces |
| Item model number  | 1-331722-1 |
| Manufacturer | Arber |
| Manufacturer  | Arber |
| Material Features | Recyclable, made of 30% PCR |
| Model Number | 1-331722-1 |
| Number of Items | 1 |
| Product Dimensions  | 4 x 2.3 x 9 inches; 1.32 pounds |
| Scent Name | Unscented |
| Size | 16 Fl Oz (Pack of 1) |
| Target Species | Controls black spot, downy mildew, rust, anthracnose, and other fungal diseases on flowers. |
| UPC | 850025915465 |
| Unit Count | 16 Fluid Ounces |

## Product Details

- **Brand:** ARBER
- **Item Form:** Liquid
- **Item Volume:** 16 fluid ounces
- **Material Feature:** Recyclable, made of 30% PCR
- **Scent:** Unscented

## Images

![Arber Organic Rose Fungicide RTS - Black Spot & Powdery Mildew, 16 oz - Image 1](https://m.media-amazon.com/images/I/71lAn9u8sML.jpg)

## Available Options

This product comes in different **Set** options.

## Questions & Answers

**Q: Will it treat black spot and powdery mildew on roses?**
A: Those are what it is intended for, along with similar leaf diseases on flowering plants. Start at the first spotting rather than waiting - fungicides protect healthy tissue far better than they rescue badly infected leaves.

**Q: Do I need to mix it with water?**
A: No. It connects directly to a garden hose and doses itself as you spray. Shake first, cover the tops and undersides of the leaves, and stop when the bottle runs out. Do not transfer it to a pump sprayer.

**Q: Will it burn or mark the blooms?**
A: Spray in early morning or evening, never in full midday sun or onto heat-stressed plants, and test one plant first if you are unsure. Avoid soaking open flowers. Follow the label's precautions for your plant types.

**Q: Is it safe for bees and other pollinators?**
A: Roses draw pollinators, so treat at dusk or early morning when bees are not active and keep spray off open blooms. Let it dry fully before the garden is back in use. Read the label's pollinator guidance before applying.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-02*