Blight Flower Seeds

[Sylphia]

I have been googling this for days with no joy.

I have purchased Blight Flower Seeds multiple times from various societies on 2 different games, and I cannot plant them.
I have tried each of the 3 farm sizes, greenhouse (including domed), the mushroom farms, even tried ranches and insect farm, but none of them give me the option to plant.

Are they glitched or am I missing something?

 

[Sylphia]

Anyone?

 

[AndrewT]

I haven't played for quite a while now, but I'm pretty sure they need greenhouses, but if so I don't know why you can't use them there.

@ellacharmed any ideas here?