Plant your poppies when it's cold! Poppy seeds require a period of cold to germinate and grow, so they generally do best when planted in the late fall or early spring. 10 Succulent Plants Toxic to Cats, Dogs, or Pets Succulent Plant Care Hanging Mixed Succulent Terrarium Wayside Gardens Complete Guide to Starting Zinnia Seeds Indoors Lettuce Grow Something Outsidepride Common Primrose Seeds White 200 Seeds