Grow your own bioregional blue with our Japanese indigo seed packets. Japanese indigo aka Persicaria Tinctoria (or Polygonum tinctorium), is one of the most easily grown sources of the beautiful indigo blue dye. These seeds are often best started indoors a few weeks before the final date of frost in your area. When all danger of frost has passed, plant the seedlings outdoors in a spot where they'll receive many hours of sunshine each day and be given plenty of water and love. Download our Plant Dyes ebook for basic instructions with small scale indigo processing and setting up an organic indigo dye vat.