Seed Starting: Persicaria tinctoria

This year I took my seed starting to a whole other level by purchasing a blue & red ray rope light. Blue & red rays are the two types light rays soak up and cause photosynthesis. These lights give them all they need, plus a little extra heat.

I gave out some seeds from last year's crop of Persicaria tinctoria, because I have 1000s of harvested seeds that I will never ever use. If you'd like a package, sign up for my email updates and shoot an email to with your name and mailing address-I'll send you some!

How I germinated my indigo seeds:

  1. Purchased fresh seedling starter mix; mine was a brick that I re-hydrated and is predominantly made of coconut husk.
  2. Took 4-7 seeds and dropped them on the top of the mixture. Note: since my mixture was re-hydrated is was very very moist and warm. Make sure your soil is moist, but not wet.
  3. Cover the seeds with a sprinkle of soil.
  4. Cover seeds with newspaper or place somewhere dark. These seeds need darkness to germinate.
  5. Constantly check the seeds, you don't want to come back to half-inch white sprouts! Once they germinate you can move them to sunlight.
  6. Be mindful of watering; over watering will cause mold growth; under watering will cause the seedlings to droop and die.
  7. Once the have developed secondary leaves you can harden them off and plant.
  8. When planting; your seedlings may loose their leaves, but don't worry they'll be okay! Just continue to chat with them and supply water.
Happy Planting!

Curious about what else I'm growing this year?

Red Zinnia
Red Marigold
Giant Amaranth
Pansy (multiple fancy varieties)
Purple basil
Red sunflower (not a dye variety)
Japanese Indigo

Also attempting to grow some bottle gourds, but they are a paint to germinate. You need 70+ degrees of heat. I'm going to attempt to germinate them under my reptile heater—it's tough this time of year to keep heat level like they require.

These are Persicaria tinctoria seedlings at a week old. 


Post a Comment