Firstly though, I'm wondering. Are there any more of those "Adopt a newbie" things? I think I need to be adopted... I have so many questions always!

This poppy seedling is turning yellow. It looked absolutely fine last week.

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And I followed bought these purple somniferum poppy seeds. I sprinkled them on top of soil and pressed them in lightly. They didn't sprout, but I looked closer and I'm thinking maybe they germinated halfway...

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The white and brown round thing right in the middle... I suspect that's a seed?

Why did this happen?