A systemic fungicide is a product that you apply to your orchid’s leaves and roots, where it enters through the plant’s leaves and travels down to its roots. The fungus can then be killed throughout the entire plant, including in new growth.
Fungicide for orchids in our climate is one of the most effective ways to combat fungus. Orchids are susceptible to fungus, especially in our climate. Fungicides are an effective way to control fungus on orchids, and they should be applied at least once a week if you want your plant to thrive.
Fungus is a naturally occurring organism that’s harmless in small amounts, but it can quickly grow out of control and become a problem. This is why we’re here to help you learn about the signs of fungus on orchids, as well as how to treat it.
The most common systemic fungicides are triazoles, which have been in use since the early 1990s. These locally systemic fungicides move up and down the plant but not in the leaf. Triazole fungicides (Folicur, Domark) inhibit an enzyme that plays a role in fungi sterol production.
The upside of this group is that they’re broad-spectrum and generally effective against many different types of diseases. They also stay active for long periods of time in plants, up to six months after application, so you don’t need to worry about re-applying them every week or two like you do with some other types of sprays used on orchids (e.g., protective oils).
How Long Does Systemic Fungicide Take to Work?
You should avoid watering in systemic fungicides when the roots are dry, as this can cause damage to them. Instead, water thoroughly just before applying the systemic fungicide and allow it to penetrate through the root system. Note that most systemic fungicides are rainfast within one hour or less (but ideally 24 hours), so you’ll want to check your plant right after application and again a few hours later.
Systemic fungicides are best applied during cooler weather since they work best when temperatures are between 60°F and 85°F (16°C-29°C).
Does Systemic Fungicide Need to Be Watered?
The fungicide must be watered in. To be effective, systemic fungicides need to be absorbed by the roots of your orchid. To ensure you use the product correctly, always carefully read all instructions before use.
While systemic fungicides are designed to work on the roots of your orchid, they can also be applied directly to the leaves. If you choose this method, make sure to spray the plant thoroughly so that all surfaces are covered.
What is the Major Problem With Systemic Fungicides?
Most fungicides act on one side only of the fungus, e.g., at the tip of mycelia or hyphae, as mentioned above. In this case, when a fungicide controls a fungal disease effectively because it acts on some sensitive points and thus kills the fungus, the fungus is said to be “sensitive” to that chemical (or class) of fungicides. When there are no more sensitive points left for that particular chemical (or class), then you have resistance to that chemical (or class).
A major problem with systemic fungicides is their susceptibility to resistance development by pathogens. The fungi can become resistant within just one generation after treatment if not enough time is allowed between treatments.
With the development of resistance, systemic fungicides are not as effective as they once were. However, they remain an important tool for growers with serious disease problems with their orchids. Note: Systemic fungicides have higher concentrations than contact fungicides so use them carefully.
List of Fungicide Products
Fungicide products are used to eradicate fungi. Fungi are microscopic organisms that thrive in the absence of light and can cause a variety of plant diseases. Some fungicides provide protection against diseases caused by bacteria, viruses, or other organisms. Other fungicides protect plants against fungal infections only.
Fungicides are available in many forms including dust, powders, liquids, sprays, and granules. Some products are formulated as dust or powders to be applied to the soil around plants; others are sprayed on leaves or bark. The most common use of fungicides is to prevent or control disease in ornamental plants grown indoors or outdoors.
Price : $17.64
- CONTROLS A VARIETY OF DISEASES – Infuse prevents and stops black spot, dollar spot, rust, brown patch, powdery mildew, leaf spot, snow mold, and many more.
- TOTAL COVERAGE OF LAWN – Provides a broad spectrum of disease control for roses, flowers, lawns, trees, shrubs, and multiple other garden plants. It is also proven to encourage turf rooting and improve color in woody shrubs.
- WON’T WASH AWAY – Fungicide is absorbed into the plant ensuring it can’t be washed off by rain or sprinklers after the spray has dried. For certain diseases, Infuse can work for up to 4 weeks.
- USE AT FIRST SIGN – This product is highly effective when it is used to prevent diseases or applied at the first sign of disease. Consider treating early in the season.
- FLEXIBLE APPLICATION – Apply to your garden by using a pump-up sprayer, water-style sprayer, or dial-style hose-end sprayer. Remember to read the label directions and follow them accordingly before application.
Additional Info :
Price : $41.99
- True systemic: readily absorbed and can move throughout the plant
- Preventive & curative for root and foliar diseases
- Use throughout the growing season, from propagation up to the time of harvest
- Low risk of phytotoxicity (when used as directed)
- Compatible with most Integrated Pest Management (IPM) programs and biocontrols
Additional Info :
Price : $5.98
- FOR ORGANIC GARDENING: Can be used up to the 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 :
BioAdvanced 701250 Disease Control for Roses, Flowers and Shrubs Garden Fungicide, 32-Ounce, Concentrate
Price : $17.48
- 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 :
Hydrofarm Physan PSPTA20 Algaecide, Fungicide, Bactericide, Virucide, 16-Ounce fertilizers, 16 oz, Natural
Price : $18.95
- Physan 20 fungicide
- General control of plant pathogens on inanimate hard surfaces
- For non-porous surfaces, orchids, fountains, ornamentals
- Algaecide, fungicide, bactericide, virucide
- Available in 16-ounce
Additional Info :
Orchids are beautiful, delicate flowers that can be grown indoors and out. They’re also notoriously susceptible to mold and fungus, which can cause them to die if left unchecked. If you’re trying to grow orchids but you’re worried about their health, here’s some good news: systemic fungicide for orchids is here.
Systemic fungicides are designed to treat an infection at its source, the roots of your orchid plant, and keep it from spreading throughout the rest of the plant. This means that when you apply a systemic fungicide to your orchid, it will reach all parts of the plant without having to be applied directly onto each part (like how a topical fungicide would work).
Systemic fungicides also have another perk: they aren’t harmful to humans or other animals. So not only do you get protection from moldy foliage and flowers with these products but there’s no chance that anyone else in your household will be exposed either.