How To Grow Tomatoes In Pots In Small Spaces (And Still Get A Big Harvest) You sure can plant zinnia seeds in pots but dont forget to look for the smaller dwarf variety of seeds!, Last year I specifically used the Thumbelina zinnia elegans from @botanical_interests and 12" terra cotta low bowl mixed succulent planter UPDATE Alaska Liquid Organic Fish Fertilizer For Plants & Vegetables When & How Plant Results