Just wanted to revive this thread to make a couple of observations.I make compost in 55 gallon barrels.I had one barrel that was almost completely composted and it must have been over a thousand tomato plants that came up, and I looked carefully and not one singel helmet head.Which got me to thinking, of all the volunteers I have ever seen in my garden, I dont remember ever seeing a helmet head.My conclusion is I guess I have to agree with the posters who say it is the way we germinate seeds,save seeds or even the age of the seed that causes helmet heads.
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