Arber Organic Bio Protectant Outdoor Biological Fertilizer Concentrate, 16oz
Arber Organic Bio Protectant Outdoor Biological Fertilizer Concentrate, 16oz
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Arber

Arber Organic Bio Protectant Outdoor Biological Fertilizer Concentrate, 16oz

4.8 stars out of 67 reviews
(4.8)|
67 ratings

Key item features

  • Concentrated Formula: This 16-ounce concentrate boosts plant immunity and optimizes soil health, aiming to double garden harvests.
  • Broad Application: Suitable for use on a wide variety of plants including holiday trees, fruits & veggies, flowers, trees & shrubs, nuts & berries, houseplants, herbs, and ornamentals.
  • Disease Control: Effectively controls and suppresses various plant diseases such as needlecast, botrytis, leaf spot, powdery & downy mildew, and white & gray mold.
  • Plant Fortification: Feeds and strengthens plants, promoting bigger blooms, greener leaves, deeper roots, and greater yields.
  • Organic Certification: Certified for organic gardening, ensuring it is free from harmful synthetic chemicals and promotes healthier soil and plants.
  • Knotweed Ingredient: Formulated with fermented and extracted knotweed, a powerful plant ingredient that contributes to long-lasting plant health.
  • Eco-Friendly Design: The concentrated formula minimizes carbon footprint and reduces single-use plastic usage.
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Current price is $29.84
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Columbus, 43215
Arrives by Tue, Apr 7
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Sold and shipped by Esbenshades Garden Center
4.667672313761893 stars out of 5, based on 4309 seller reviews(4.7)
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4.8 out of 5 stars
stars67 ratings65 reviews
How item rating is calculated
  1. 5 stars81% (54)
  2. 4 stars15% (10)
  3. 3 stars4% (3)
  4. 2 stars0% (0)
  5. 1 star0% (0)

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Showing 1-3 of 65 reviews

Aug 15, 2025
Catherine D.
5 out of 5 stars review

Arber's Bio Protectant is amazing.

[This review was collected as part of a promotion.] I used this on my Broccoli and Cabbage seedlings and then again when they were transplanted out to the garden and I believe it made a significant difference in overall health and vitality of the plants. They grew faster and larger despite us being in an unusual heat and drought condition this summer. I would highly recommend this product to mitigate plant stress!

Review from Arber
Helpful?1J8BNAI2QQUL2080314713
Dec 30, 2025
Pamela M.
5 out of 5 stars review

This is great for boosting blooms and plant health while controlling many diseases

This product boosts the plants immune system, preventing diseases like powdery mildews (its strongsuit) and leaf spots. It is great to spray on leaves but also as a a soil drench or dipping transplants in it. I love the hose end as I have a big yard and garden. It greens up everything and stops mildews in. their tracks.

Review from Arber
Helpful?1J8BNAI2QQUL2080314713
Mar 10, 2026
Sydney K.
5 out of 5 stars review

Shiny, healthy plants

[This review was collected as part of a promotion.] Ever since starting using this product when I water my plants, they have been the most beautiful they could be. All of them look so much more alive and happy.

Review from Arber
Helpful?1J8BNAI2QQUL2080314713