Organic Products from Simplot Hawaii

Simplot Hawaii features a broad range of contemporary and traditional horticulture related products, strategic warehouse locations on Oahu, Maui, and the Big Island of Hawaii, timely deliveries and knowledgeable staff that offers impeccable customer service.

Ask most any gardener, landscaper, farmer, or homeowner whether they prefer using organic or chemical fertilizers, herbicides, insecticides and fungicides and chances are you’ll spark a lively debate.

Simplot Hawaii supports this discussion and supplies a wide range of Certified organic materials so Simplot Hawaii customers have a choice and don't have to rely on synthetic chemicals in fertilizers, herbicides, fungicides etc. to produce healthy plants and produce if that is their wish. Instead, they can rely on natural fertilizers, humic and fulvic acids, complex carbohydrates, compost, and insecticides derived from natural sources.

As always, the knowledgeable Simplot Hawaii staff are available to answer all your Horticulturally related questions so why don't you visit one of the Simplot Hawaii locations to explore all your options and to create strategies to solve any of the issues you encounter with your plants as a professional or amateur in the Hawaiian environment.

Organic Fertilizer from Simplot Hawaii

Andersons Humate Products

Humic DG contains 4 biologically active components; humic acid precursor, fulvic acid, humic acid and humin. These components range from very soluble to completely insoluble in soil media, working together to provide the soil with a broad range of biological benefits, from plant available fulvic acids to the insoluble, high nutrient holding capacity of humin.

Humic Acid

Humic acid is a natural soil conditioner that acts as an organic chelator and microbial stimulator. It has a unique carbon matrix which includes a high concentration of trace minerals and organic acids. Humic acid enhances the plant’s ability to take in essential nutrients and improves soil structure.

Humic DG

The "magic" in Andersons Humate Products is the dispersing granule (DG) technology, which serves to enhance humate distribution. Upon contact with water, each Humic DG granule disperses into thousands of micro particles, which move directly into the root zone and begin working to improve the health and quality of your turf, crop or plant.

Proven Humic Acid Benefits:

  • Increases soil carbon
  • Improves plant health
  • Improves germination and viability of seeds
  • Chelates macro and micro nutrients to increase availability to the plant for a longer period of time
  • Increases cation exchange capacity — CEC (CEC is used as a measure of fertility and nutrient retention capacity)
  • Improves soil structure for better aeration and water movement
  • Stimulates beneficial microorganisms, which can improve long-term soil pH
  • Especially effective on sandy soils

Grow everything better, naturally with AZOMITE®. A Natural Source for Minerals and Trace Elements.

AZOMITE® Trace Minerals

AZOMITE® is a natural product mined from an ancient mineral deposit in Utah left by an volcanic eruption that filled a small nearby seabed an estimated 30 million years ago. This natural fertilizer (described in Secrets of the Soil as rock dust) is a combination of aluminum silicate clay and marine minerals. In use for over 50 years as a source of available potash (0.2%) and over 70 trace minerals, including calcium (1.8%), sodium (0.1%), and magnesium (0.5%) and many rare earth elements (lanthanides)
that have been depleted from soils worldwide.

According to research and customer reports, plants grown with AZOMITE® produce more and larger fruits and vegetables per plant resulting in a better tasting food products with improved resistance to disease. AZOMITE® has shown positive results in a wide variety of plants in the field and in the laboratory. There is evidence that AZOMITE® improves nutritional benefits.

Most conventional fertilizers contain mainly Nitrogen (N), Phosphorus (P) and Potassium (K), which are called macronutrients. Plants require macronutrients in large amounts. NPK are only three of the essential nutrients required by plants. When choosing a fertility program, growers often neglect trace minerals and focus primarily on NPK. For plants to complete their life cycle and produce at full potential, a wide range of trace minerals is necessary; AZOMITE® contains a wide range, from A to Z. AZOMITE® is a natural inorganic substance and does not harm the environment. AZOMITE® is 100% natural and OMRI-listed for use in organic production.

CLICK HERE for Label and MSDS Links

Perfect Blend Biotic Fertilizer

2page_img2Perfect Blend Fertilizer is a type of a Complex Nutrition Enabling Fertilizer TM — a totally new concept in organic fertilizers. Perfect Blend CNEF is supplemented with a rich balanced combination of secondary and mineral nutrients. The process that transforms Perfect Blend from an unpredictable, unreliable, labile feedstock into a slow release fertilizers an acid driven hydrolysis process. This computer controlled conversion actually alters the molecular structure of the chicken waste to render it into a slow release material. This remarkable base and the added secondary and mineral nutrients provide a complete blend that is designed to provide plants, and the microbes that feed them, with a complete complex nutritional formulation that enables soil microbes to provide crops with total plant available nutrition.


I use Perfect Blend Organic 444 from Simplot Hawaii with spectacular results on my Pink Ginger in Haiku Maui.  Nothing else worked!   The reaction of the Pinks to the many other fertilizers I’ve tried over the years was always disappointing.  I now get huge full flowers with very rich color and deep green healthy foliage.  I am complete happy with this product and would recommend it to any gardener or landscaper who has tricky plants that are unresponsive to other fertilizers.

Organic Herbicide from Simplot Hawaii

Benefits of Weed Zap:

Weed Zap is an all natural non-selective herbicide. Weed Zap "zaps" small broad leaf and grassy weeds. It’s natural ingredients will eliminate plants that are six inches in height or less. Weed Zap is a broad spectrum herbicide that is suitable for organic production.

Weed Zap is 100% biodegradable, which makes it an environmentally smart product to use around houses, schools, parks, playgrounds or anywhere people and pets are present. Weed Zap is a natural herbicide, it’s ingredients are listed as food grade materials. For this reason, Weed Zap is exempt from EPA registration - reducing paper work and worry.

  • Pleasant Clove Scent
  • Easy to Mix and Apply
  • Kills Most Weeds in 12 Hours
  • Suitable for Organic Production
  • Kills Most Broadleaf Weeds and Grasses

Zap will not damage mature and non-green, woody plant parts and has both contact and physical modes of action.


Weed Zap binds to the surface of the plant, where it translocates into the cells of the plant. Weed Zap’s ingredients begin to destroy the plant cell structure through a burn down process. Results can be seen in as little as six hours after application. Weed Zap works best in non-shaded open areas, on herbatious weeds 6" or less in height.


  • Netseed Lambsquarter
  • Prostrate Pigweed
  • Canary Grass
  • Rag Weed
  • Starthistle
  • Common Cocklebur
  • Chick Weed
  • Bermuda Grass
  • Hairy Fleabane
  • Pig Weed
  • Dandelion


Organic Insecticide from Simplot Hawaii

Azatin Organic Insect Growth Regulator

  • Azatin O is the latest insecticide with the active ingredient 4.5% Azadirachtin.
  • Azatin O is OMRI listed.
  • This insecticide can be used on ornamentals, vegetables, fruit, herbs and spices.
  • Labeled for use on indoor and outdoor ornamental, turf, commercial lawns, and horticultural crops.
  • Results within 3-10 days. Azatin O is compatible with most beneficial pest.

Natural Potting Mixes from Simplot Hawaii

HGP offers 2 organic products from Black Gold



Organic Fungicide from Simplot Hawaii

Potassium bicarbonate for Powdery Mildew

Kaligreen is a contact-type fungicide for the control of powdery mildew. It contains microencapsulated potassium bicarbonate as the active ingredient and direct contact with the fungus is absolutely necessary for control. Potassium ion balance in the fungus cell is broken by Kaligreen; cell walls collapse, shrinking the cells and destroying the fungus. Mix thoroughly with water and add a spreader-sticker and agitate. Do not mix with highly acidic materials since Kaligreen is a weak alkaline material and decomposes in highly acidic conditions. Labeled for over 40 crops. Not for use through irrigation systems. Use at a rate of 2.5-5 lb/acre.

Oahu Location
(808) 808-682-5113
91-262 Olai Street
Kapolei, Hawaii 96707
Monday - Friday, 7:30am - 4:00pm

Maui Location
(808) 877-6636
(400 Lehuakona Street, Kahului
Hawaii 96732
Monday - Friday, 7:30am - 4:00pm

Big Island Location
(808) 326-7555
73-4098 Hulikoa Drive
Kailua-Kona, Hawaii 96740
Monday - Friday, 7:30am - 4:00pm