Organic Bio Protectant

Think of Arber's Organic Bio Protectant as your plant's immune system in a bottle. This OMRI-listed biological extract — made from one of the world's most invasive weeds, knotweed — is packed with natural compounds that supercharge your plants' own defenses, helping them fight off disease before it ever takes hold. Greener leaves, deeper roots, healthier soil. That's the goal.

• Boosts plant immunity and stimulates natural disease resistance
• Use on: Tropical houseplants, foliage plants, vegetables, roses, fruits, berries, flowers, ornamental trees, and shrubs
• Prevents and controls: Powdery mildew, botrytis, black spot on roses, white mold, leaf spot, rust, and more
• Increases chlorophyll production for richer, fuller, greener leaves

How to Use

Mix 0.25 oz concentrate with 32 oz of water, or 1 oz with 1 gallon. Apply directly to soil or leaves. For general wellness, apply every 10–14 days. For active disease pressure, apply every 5–7 days. Also great for transplants, potting mixes, rooting compounds, and hydroponics.

What Makes It Different

Knotweed is considered one of the most invasive plant species in the world — but it turns out it has some seriously impressive redeeming qualities. Through a complex fermentation and extraction process, Arber pulls out the key protective compounds from this powerhouse weed to create a formulation that works with your plant's biology, not against it. Harvesting an invasive species to make one of the most effective plant protectants on the market? That's a story we love.

Active Ingredients:

• Extract of Reynoutria Sachalinensis: 5%
• Other Ingredients: 95%

Net Contents: 1 pint / 16 oz concentrate.