Tag Archives: onion blight

Piglet’s Plot: Problems With My Onions

Onion Blight

Onion Blight

You name it, my fruit and vegetables probably have caught/will catch it. I was a sickly child and my fruit and veg seem to be following in the family tradition. With this in mind I literally love my plants to death, or so I’ve been told.

In December I added rotted horse manure to the plot, so I was anticipating bumper crops of the usual suspects such as onions, tomatoes, cucumbers, strawberries, peppers and beans to name a few.

The  baby onion plugs bought from the local market and planted in February were looking good and we’d already enjoyed several feeds of Spring onions. I always plant more than required then thin the rows and leave the remaining onions to develop. Well, that was the plan until disaster struck!

Last week I went to talk to my onions, as you do, and was horrified to discover they had developed, according to Mr. Google who dug up no-dig-vegetablegarden.com to help solve the mystery, a virus: Botrytis (I think).  This is a fungus species which affects onions and as there are three different types.

  • Botrytis squamosa (leaf blight)
  • Botrytis cinerea (leaf fleck)
  • Botrytis allii (neck rot)

I decided the problem was leaf blight (Botrytis squamosa) which spreads rapidly or Downy Mildew. (Downy Mildew is fungal and can be treated with a weekly application of organic fungicide)

onion blight

onion blight

I don’t know what caused this other than high humidity.

After deliberating for several hours I decided not to take any chances and dig up the crop and salvage what I could – some for immediate use and dry the smaller onions ready for pickling.

The leaves were disposed of so as to avoid cross-contamination to other plants.

I will not attempt to plant further onions this year but will focus my energy (and water) on the remaining crop of tomatoes, lettuce, cucumber, radish, peppers and rocket.

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