How To Grow Poppies From Seed In Pots. Take care, as early separation can damage sensitive taproots. If absolutely necessary, use peat or coir pots, and maintain a soil temperature of 12°c (55°f).
Generally, water thoroughly at least once a week to help new roots grow. Put large, round rocks at the bottom of the pot to assist with drainage. There’s no need to cover it.
The seeds of poppies you can sow directly in your garden bed, it will grow well.
My next experiment, begun several years ago, was to grow blue poppies in pots. Then, that you place the pot or container in a bright position after planting seeds as poppy seeds require light to germinate. Sprinkle only a few seeds in each pot to leave the new seedling roots plenty of room for growing. Sowing fresh seeds is recommended.