• Handling Disease Worksheet
    Handling Disease Worksheet

    Download the worksheet for this session. Space has been provided for those who would like to take notes. 🙂

Extra Resources


Insect Disease & Weed Control I.D. Guide

What is it? Why is it in your garden? How can you make it go away? Or should you try to keep it there? Use this book to know what's what in your garden, lawn, and landscape. Uncover the identity of each garden mystery you meet, them learn exactly what-- if anything-- to do about it. From banishing pests and diseases to wiping out weeds to creating a haven for garden good guys, you'll find safe, sensible, all-organic recommendations to help you make the best choices for our garden.

Or read it for free on Google Books here.

Identifying Specific Nutrient Deficiencies

Learn more about specific nutrient deficiencies that you may be facing in your garden.



This actinovate fungicide for lawn and garden is approved for organic gardening and lawn care. Patented and registered microbes for use on vegetables, herb gardens, annuals, perennials, trees, shrubs and hydroponics. Actinovate may be used as a spray or drench for root and foliar diseases. This product comes in 20 grams bag.


Fish and Seaweed Fertilizer

Neptune's Harvest Organic Fish/Seaweed Blend Fertilizer gives you the best of both products with a perfect blend of fish hydrolysate and seaweed, ensuring a complete fertilization program. Growers using our fish/seaweed blend fertilizer on a regular basis have reported increased marketable yields and improved shelf life on fruits and vegetables.


Feather Meal

Feather Meal (4lb.) Natural organic fertilizer provides steady long lasting source of Nitrogen.


Alfalfa Meal

Dr. Earth Alfalfa Meal is infused with seven strains of beneficial soil microbes. Contains Pro-Biotic beneficial soil microbes. A good source of nitrogen and potassium. 2-1-2 formulation.


Soft Rock Phosphate

Colloidal phosphate infused with seven strains of beneficial soil microbes. Contains Dr. Earth soil and seed inoculant. An excellent source of natural phosphorus and calcium. Provides both short and long term benefits. 0-2-0 formulation.


Kelp Meal

Dr. Earth Kelp Meal is cold water Norwegian kelp infused with seven strains of beneficial soil microbes. An excellent source of potash. Contains Pro-Biotic beneficial soil microbes. Promotes health in all planting applications. Contains minerals that support plant health and growth. A potent all around ingredient that will benefit all plants. 0.6-0.5-2.5 formulation.



Used as a soil conditioner and fertilizer since the 1700's, Greensand is a long-term, slow-releasing fertilizer of marine origin with iron-potash-silicates and unique properties that loosen clay soils and increase the moisture-holding capacity of both clay and sand. Greensand is a good source of potassium. 0-0-3 formulation.

Suggested Reading

For a deeper look into this module read the following:

Four Season Harvest: p. 122-123; 143-150

The New Organic Grower: p. 172-189

Aceraceae-Plant-Diseases - Photo By Halvard : from Norway. (A photo taken by Halvard from Norway.) [GFDL (, CC-BY-SA-3.0 ( or CC-BY-2.5 (], via Wikimedia Commons

Rye Grass Between Carrots - Photo by Fred Gasper, USDA Natural Resources Conservation Service. (USDA NRCS Photo Gallery: NRCSMI01054.TIF) [Public domain], via Wikimedia Commons

Crop Rotation - Sten [CC-BY-SA-3.0-2.5-2.0-1.0 ( or GFDL (], via Wikimedia Commons

Powdery Mildew - By Jeff Kubina (Own work) [Public domain], via Wikimedia Commons

Sickly Plant Leaf - Picture taken by Carsten Niehaus (Lumbar) in the botanical garden in OsnabrĂĽck, Germany. (Own work) [Public domain], via Wikimedia Commons

Nitrogen - Pumbaa (original work by Greg Robson)

Join the Discussion


  • Rick

    Reply Reply August 18, 2020

    We have a milky substance with some little black balls/specks on our cucumbers, which has since gotten onto our zucchini & cantaloupes (which share the same raised grow bed) (may also getting into our adjacent bed of watermelons…). It appears to be stressing the plants, about to kill them. Not sure if it’s an insect, bacteria, or fungus…. It’s killing our crops! Any recommendations?
    For what it’s worth: we hauled in several yards of “garden soil” (organic matter) to fill the raised beds this spring. So assume the soil is healthy. Or seeing it in our other grow beds (tomatoes, herbs)
    We tried diatomaceous earth, but it hasn’t stopped it. Just learning about the teas, actinovate, which we haven’t tried yet.
    Guess we need a correct diagnosis before we know how to correctly treat it…
    (For what it’s worth, we have Bonide neem oil & Bonide orchard spray… which were considered organic by our local nursery – for fruit trees…)

    • Paul

      Reply Reply August 19, 2020

      Hi Rick,

      Hmm… that sounds strange. It would be best if we could see a picture. Can you email me at and send us some pictures of the problem?

      Would love to help!

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