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What is the white fuzz on my sprouts?

The white fuzz are root hairs!

They are nutrient superheroes that enhance growth & absorption.

Root hairs, also called ‘cilia’ are a biological function of sprouts and are a normal part of the root system. Despite their microscopic size, these tiny hairs play a crucial role in drawing water and nutrients to deliver back to the growing sprout. Root hairs are a good sign to let you know that I am growing and living!

They are not to be confused with mould, which is a type of fungus that tends to grow when your sprouts are suffering from inadequate or poor environmental factors.

cilia

 

How to spot the difference between root hairs and mould:

If you’re unsure about whether the white fuzz is root hairs or mould, here are our top tips to work out which one you’re dealing with:

  • Try gently spritzing some water over the top of your sprouts. If they are root hairs, the white fuzzy look will disappear.
  • Root hairs are most common on younger sprouts. They are always white and grow in the same direction, outwards from the root.
  • Mould can be different colours like grey and black.
  • If you can’t see the difference, try the ‘sniff’ test: root hairs have no scent while mould will smell musty.
  • Roots hairs will appear among healthy sprouts, whereas mould is more likely to appear once roots are looking unhealthy or turning brown

For other growing related questions please visit our FAQs section.

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