MrBrownThumb: How To Collect Hollyhock Seeds Can you put mulch at the bottom of a pot before soil? Seeds Planted in Concrete by Bianca Sparacino Goodreads Bamboo Blooms 5 16003 16in. Black Rectangular Self Watering Bamboo Planter Ficus Retusa 'Microcarpa Ginseng' Snakeroot Botanicals How to sow zinnia seeds! , 1. Grab your seed packet and pour out the seeds.2. Even out the soil in your planter box. , 3. Simply scatter the seeds all over the soil., 4. Lightly cover the seeds