There is not too much on the indoor seeding front for me at this stage. I started a few more flowers: nasturtiums, marigolds, and some cosmos and zinnias. You can start a few last vegetables at this point, such as cucumbers or squash, but I usually find these all do better seeded directly in the ground, and don't seem worth the effort of babysitting inside. If you do want to get a jump start on these guys, I would use compostable pots or newspaper for seeding, so these can go directly into the ground with less transplant shock.
There are a couple of good indoor chores this time of year:
Plant Inventories: Make a list of what you've started and tick off those healthy seedlings. This is where I discover my Ancho peppers did not germinate at ALL, and that I planted way too many Sungold tomatoes (again). Make notes if you have to pick up any plants that failed, or better yet trade emails with a gardener friend and swap! (Anybody have any Ancho peppers??)
Pot up: If the season is running cold (like it is) I will pot up tomatoes at this stage so they can wait a bit more happily for warm planting weather. Select your favorite strong seedlings, and plant them deeply in a larger pot. Burying the bottom of the stem makes them even sturdier and roots will grow right out of the stem too.
Fertilize: I am not a huge proponent of fertilizing, I generally rely on my overall soil health and add a ton of compost to my garden beds and leave it at that. But, I do have a small bag of organic fertilizer I use for container plantings and at this time of year. Fertilizing too early seems to make seedlings leggy and overgrown, but this late in the stage they can sometimes get a boost from a light feeding a few weeks before being planted out. I mix in some granulated fertilizer (or compost) when I pot up tomatoes, or make a compost tea (or just dissolve a little organic fertilizer) for watering.
But, the best part of this stage of pre-frost preparation is getting out in your real outdoor garden (no lights, no flats, phew!). I seeded peas a week or so ago, and this is a fine time to sow some early lettuce or spinach if you have a dry bed ready to plant. This weekend I'm transplanting onions. Since I had mentioned my method way back in February, I thought I'd follow up with a few pictures of those seedlings.
|Look, no snow! And a chicken! Here are the flats, a nice healthy size for planting.|
|Popped out of the cell pack, you can see all the roots.|