Answer: If the carton is plastic, punch a few holes (3 or 4) in the bottom with the tip of an ink pen. If the carton is cardboard, it should wick water away from the roots without any drainage holes.
Since the egg carton compartments are very small, be sure to transplant your poppies within 2-3 weeks or the roots may become overcrowded.
Hope this answers your question!
Q&A Library Searching Tips