Wet Compost Using Yeast or Lactic Fermentation (was Sustainable Slug Beer) : 6 Steps (with Pictures) Instructables Part 2: How to plant dahlia tubers, To plant dahlia tubers, you'll need:, pots (in ~6 inch diameter), potting mix (seedling starter or promix), dahlia tubers, one for each pot, Once you've Sun Shelf Modular Plant Shelf with Grow Lights gathera Square Galvanized Planter 4 Tier Grow Light Garden Pro