Category Archives: Disease & Pests

Gray Mold (Botrytis) In Your Hydroponic Garden

Gray mold in a hydroponic gardenGray mold, also known as Botrytis, is a fungus that affects many varieties of plants. It can affect any part of a plant. Gray mold spreads quickly and often results in the loss of the plant. It is a white to gray growth that eventually turns the affected area brown.

How Does Gray Mold Start?

Gray mold produces spores that are disbursed by water or through the air. To grow, the fungus needs a high humidity environment and nutrients to survive. It growth often starts and an area of the plant that was damaged. When a piece of a plant breaks, it exposes the nutrients the mold needs to start its growing. Once started, it spreads to other parts of the plant. In addition to damaged parts of a plant, you may also see gray mold form on seedlings in high humidity, dying flowers, and cuttings.

How To Get Rid Of Gray Mold

It is recommended to remove the infected plant entirely from the hydroponic garden to prevent the mold from spreading to other plants. If you were to cut off the molded area, you would expose more tissue for mold growth to occur again. When removing infected plants, dispose them far away from your hydroponic garden. Be careful not to damage any healthy plants in the process.

Ways To Reduce Risk Of Mold In Your Hydroponic System

  • Make sure to sterilize all hydroponic equipment regularly.
  • Take steps to reduce humidity. Provide ventilation to your grow area
  • Allow airflow between plants by not overcrowding them, also trimming them when needing.
  • When taking cuttings, try to expose as little of the open plant as possible.
  • Make sure to all remove trimmings and dead plant matter from your hydroponic garden.
  • Keep your plants dry.