Starting my tobacco seeds today gives me about 6 weeks until the start of May, and 8 weeks until my "historical average" date of last frost. It's becoming more difficult to predict. Today is up into the 60s°F, and I will be down to ~18°F in two days.
My starter mix consists of:
- Miracle Gro sphaegnum moss 2/3
- Miracle Gro Perlite 1/6
- Vermiculite 1/6
I don't measure any of this. I simply dump the ingredients into a 5 gallon bucket by guessing. I then thoroughly mix it with a large spoon, until it looks well distributed.
My starter mix.
I fill my germination cups to within about ½-inch of the top rim of the cups. I label both the cups as well as their caps. Prior to sprinkling seed over the surface, I add ¼-cup of water to the mix in each cup. These particular cups are Ball Freezer Cups, which I purchased over a decade ago. They are no longer made, since they function poorly as freezer cups. Prior to use each year, I thoroughly clean them, sanitize them with Clorox, and then rinse them several times.
My germination cups.
I always make sure that my fingernails are well trimmed, prior to sprinkling seed into the germination cups, since the edges of fingernails can become a source of electrostatic transfer of the seed from one variety to another. Since I simply cannot see the seed that has landed onto the surface of the moist starter mix, I watch the seed gliding out the opening of its tiny Ziploc bag (while I thump my fingers with my other hand, to urge them along). I sprinkle generously: seed is cheap; labor is expensive. Once the seed is sprinkled, the cup's lid is closed, and left that way until I begin to see the green of cotyledons.
Seed sprinkled onto the surface.
I arrange my 1020 trays in this order (bottom to top):
- a 1020 mesh tray on the bottom (for structural support when moving the tray)
- a 1020 tray with no holes (as a water reservoir)
- a 1020 tray with holes (to allow excess water to drain into the tray beneath)
- a sheet of 1020 tray 48-cell inserts (to hold the starting mix)
The starting mix is spooned into the cells, but never pressed or packed. The day prior to moving individual seedlings to the insert cells (one seedling per cell), I add about 2 quarts of water to the tray assembly (lifting out one insert pack, in order to pour the water directly into the tray beneath it). At some point, I will use my pocket knife to separate each of the 4-pack inserts from one another.
My 1020 trays.
Since I am starting only 3 varieties this season, I can nest the germination cups into a little carton, and place it on a bookcase in my study. There will be no watering until after germination. Plan B could be placing them onto a seedling heat mat on my back porch.
Bob