Grower Resources

  • Hydroponics 101Growing hydroponically takes the right equipment and more importantly the right information, we have both.
  • Organics 101Learn all there is to know about growing the way Mother Nature intended. We have the answers and solutions.
  • Nutrients 101Keeping it simple when it comes to nutrients. We have the schedules you need and more.
  • Lighting 101All of your lighting options are explained and questions answered. Learn about lighting rules, seasons and more.
  • Wheatgrass 101Wheatgrass is perhaps the quickest and easiest way to get healthy. Find all your wheatgrass answers here.
  • Online ShoppingWe have what you are looking for! You can order online and pick it up in the store.

Plant Disease

Hydroponics Home   Benefits of Hydroponics   The Future of Gardening  
Starting a Garden   Hydroponic Types   Preventive Measures  
Pest and Disease Control   Good Bugs   Bad Bugs  
Plant Disease  
Plant Deficiencies

Plant diseases or blights in a hydroponics garden are much less frequent than in a dirt garden because there is no dirt to grow bacteria. Not to mention the fact that many plant diseases travel to the plant from the surrounding soil.  Plant disease cannot occur without a host plant, a pathogen, and favorable environmental conditions.

Plants can be more susceptible to disease if weakened by environmental conditions such as too much shade, high humidity and crowded conditions. They are also more susceptible when weakened by nutrient deficiency or toxicity (too many nutrients) and poor pH.

There will always be some trouble with disease, just watch for it and take care of it immediately. Unfortunately, many disease cures involve the use of harsh chemicals which you really do not want on your plants. A hydroponics garden can easily collect such chemicals in the nutrient solution with indiscriminant use and get into the plant cells - not something you want. 

What To Do About Them

Try some less harsh solutions first. Our favorite all-purpose cure is to mix water, baking soda, lemon juice and a very little bit dish detergent. Put this in a spray bottle and mist the affected parts of the plant. If you mix and use this recipe, make sure you cover all open areas to your nutrient solution or the dish detergent will get into it, causing soap bubbles.  

Powdery Mildew
Description: Fungus causing whitish spots on the underside of the leaves. Eventually the leaves shrivel and die. Thrives in high humidity.

Treatment: Spray with homemade all purpose cure described earlier.

Root Rot
Description: Fungus rots a plants roots.

Treatment: Cut away rotted root portions and spray with a fungicide.

 Early Blight
Description: Dark brown spots on leaves, stems and plant fruit seriously weakening the plant.

Treatment: Treat with harsh chemicals (maneb, zineb).

Description: Fungus caused by over watering where leaves become marked with dark smears and shrivel. Hardly ever occurs in hydroponics plants

Treatment: Spray with fungicide and remove damaged leaves. 

Damping Off
Description: A fungus affecting small plants where stems meet soil causing them to fall over and die.

Treatment: Remove diseased sections. If it has affected a significant number of plants, replant in new soil and clean containers.  

Description: Grayish white, fuzzy leaf growth caused by inadequate ventilation. Not common in hydroponics gardens.
Treatment: Increase ventilation and remove affected leaves

Description: Slightly raised, powdery red pustules on the underside of the leaves causing them to turn yellow then brown and die. Helped along by high humidity. Very contagious.

Treatment: Apply harsh chemicals like zineb or maneb. 

Club Root
Description: Roots turn into a mass of club shaped tubers. Plants may become stunted.

Treatment: Dust with fungicide

Crown and Stem Rot
Description: Fungus causes plant to turn pulpy and rot.

Treatment: Cut away rotted plant portions and spray with a fungicide.

Grower Information Resources