Regalia, a staple in IPM programs, is used preventatively for powdery mildew, blight, Anthracnose and other bacterial diseases.
Regalia Biofungicide delivers better yield and improved harvest quality. It’s ISR and SAR modes of action increase crop performance by stimulating a plant’s innate ability to fight diseases. This fungicide offers preventative activity and early control of yield-robbing diseases that result in increased marketable yield and top profit on every acre.
APPLICATION: Foliar (Aerial or Ground), Chemigation, Soil Treatment, Backpack/Hand Sprayer
ACTIVE INGREDIENT: Reynoutria sachalinensis

Regalia® CG Biofungicide is labeled for ornamental, greenhouse and garden crops to help control powdery mildew, blight, Anthracnose and other bacterial diseases.
Regalia CG is an organic fungicide for greenhouse and medical plants applications. Use it early for disease prevention and overall plant health, in the middle of the season for disease control and worker safety and late in season to avoid issues of pesticide residues at harvest. Learn more about Cultivated Garden (CG).
Benefits
- Healthier plants for better yield and harvest quality
- Quality control tested to ensure no human microbial pathogens
- Natural ingredients stimulate plant immunity and fight diseases
- OR, WA, CO & NV approved for medicinal plants pesticides listing
APPLICATION: Foliar (Aerial or Ground), Chemigation, Soil Treatment, Backpack/Hand Sprayer
ACTIVE INGREDIENT: Reynoutria sachalinensis
Regalia® Maxx is sold as a higher concentrate outside the US and used to control powdery mildew, blight, Anthracnose and other bacterial diseases.
Regalia Maxx works from the inside out, by triggering treated plants’ natural defense mechanisms to produce disease-fighting biochemicals, while simultaneously enhancing plant health, crop yield and crop quality. Regalia Maxx is an organic fungicide that is exempt from residue tolerances (MRLs = maximum residue levels). It is approved for suppression of Powdery mildew and Gray mold (Botrytis) for indoor commercial medicinal plant growers in Canada.
APPLICATION: Foliar (Aerial or Ground), Chemigation, Soil Treatment, Backpack/Hand Sprayer
ACTIVE INGREDIENT: Reynoutria sachalinensis
Crops & Diseases
Regalia Biofungicide can be used on many specialty crops to combat and manage plant disease.
How your crops benefit from Regalia
Regalia is a versatile solution for disease control and plant health from planting to harvest.

Boost yield & quality
Inhibits fungal and bacterial disease, increases plant stress tolerance, and optimizes yield

Manage resistance
New and simple IPM option with low risk of resistance; sustainably manages diseases

Harvest flexibility
Can be used right before harvest without concern for residues

Worker-friendly
Helps simplify your labor scheduling and avoids costly downtime
Want to learn more?
Regalia Efficacy
Regalia Biofungicide can be used in rotation or in combination with other fungicides to synergize and strengthen IPM programs in any conventional crop production. It can also be used alone or with other approved products in organic crop production. Regalia CG Biofungicide is also approved for use on a large selection of ornamental plants.
Testimonials
Hear how Regalia helped these growers.
“Whatever we’ve done for the last 5 or 6 years, has worked. And Regalia’s been the [program] that we’ve based it on. I totally appreciate that I’m applying a that is helping my production, but isn’t hurting me.”
~ Harley Soltes, Bow Hill Blueberry, Washington
Art of Use
The following best use practices should be kept in mind to effectively use Regalia:
- Generally apply 2 quarts of Regalia per acre in rotation with other fungicides
- Or apply Regalia at 1 quart per acre in a tank mix with another labeled fungicide
- Do not exceed a Regalia spray concentration of 1% v/v
- Begin applying Regalia prior to visible disease symptoms or when disease is first noted
- Repeat applications at 7-10 day intervals with shorter intervals under higher pressure situations
Basic Use Instructions
Apply Regalia CG preventatively, as a part of your program, before diseases gain a foothold. Follow soil applications with foliar applications for improved disease control.
Do not exceed a Regalia CG spray concentration of 1% volume/volume (v/v)* on flowering plants.
Foliar Applications
2 tbsp/gallon of water per 1000 sq. ft. Apply at a 7 day interval
Soil-based or Soil-less Growing Media Applications
2 tbsp/gallon of water per 1000 sq. ft. Apply at a 21-28 day interval
*A percent v/v solution is calculated by the following formula using the milliliter as the base measure of volume (v): % v/v = mL of solute/100 mL of solution
Example:
- 1 % v/v = 1.0 mL Regalia/100 mL of solution.
- 1 % v/v = 1.0 oz. Regalia/100 oz. of solution.
- 1 % v/v = 1.0 quart Regalia/25 gallons of solution.

- Generally apply a solution of 0.125% – 0.25% v/v of Regalia Maxx in rotation with other fungicides
- Apply in sufficient water carrier volume to ensure good coverage
- Do not exceed a Regalia Maxx spray concentration of 0.25% v/v
- Begin applying Regalia Maxx prior to visible disease symptoms or when disease is first noted
- Repeat applications at 7-10 day intervals with shorter intervals under higher pressure situations
Labels & Literature
Where to Find Regalia Biofungicide
We have a professional sales and technical support team and maintain a robust distributor network. We also sell online in small quantities. For larger quantities or for a list of distributors in your area, connect with a ProFarm rep today!