Seed starting mix experiment.

One inadvertent result of my manure bioassay was noticing that germination was quite poor in the control medium. I usually start my seeds in a 50/50 mix of purchased potting mix and vermicompost. This mix is what I compared the manure to. Lo and behold, the seeds germinated better in the manure. Hmmmm. πŸ€”

After observing the difference in germination between the garden manure and my standard mix, I thought I had better test a some different combinations. I may need a different seed starter!

Testing setup

My control medium is 100% peat moss. I chose it because it is sterile, has no nutritional benefits, and is considered soiless (plus I had some!) The testing media are 100% potting mix, 100% vermicompost, 50/50 peat and vermicompost, and 50/50 potting soil and vermicompost (my usual mix).

Mom gave me a multi seedling container while she was cleaning out. Little did she (or I) know it is ideal for this test! I chose to try lettuce and peas for germination since they both had similar germinating times and temperature (plus I had some!)

Germination tray and setup.

Each mix got 6 cells of the tray * 5 mixes = 30 cells total. For each mix 3 cells were planted with lettuce (2 seeds) and 3 cells were planted with snap peas (1 seed). All lettuce was covered with vermiculite. All peas were planted 1 inch deep. They were watered in, the cover attached, and then popped under the grow lights (mainly for warmth).

I will provide an update after a week. I’m curious to know with what seedling mix you’ve found most success.

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3 thoughts on “Seed starting mix experiment.

  1. I used to use potting soil, with good results. Now I mostly start seeds in my Aerogarden. Most seeds are wildly successful there, with the exception of chives. Still can’t figure out why. I’m looking forward to hearing your results!

    Liked by 1 person

    1. Hi Julie! Didn’t know what an Aerogarden was. I can totally picture you growing lots of different herbs right in your kitchen for your delicious meals πŸ˜‹

      Liked by 1 person

      1. 😊 I have trouble with chives & thyme, but basil, dill, & parsley would take over the kitchen if I let them! Then in the spring I harvest everything & concert to seed starting. It’s like getting to garden all year, without the weeding!

        Liked by 1 person

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