I want to start growing micro greens and after doing some research, it seems like you buy special micro green seeds. This seems silly to me since I already have multiple seed salad blend packets. It sounds like the reason is because you want seeds that have no chemical treatments or anything like that. My question is, can I use regular salad mix seeds to grow micro greens if they are organic non gmo/treated seeds? Or do micro greens actually need to be grown from special seeds? It's my understanding that the only difference is you harvest early and no difference in actual growing tendencies. I figure it's alright to use the seeds I have but feel the need to get another opinion since I'm very new to vegetable gardening. Thank you!
Yes, you can use the seeds you have.
I use regular Radish seeds and harvest the little Radish leaves.
Here is a link with more information.
Each time I harvest my micro greens do I need need to start again with new soil? I grow them in my greenhouse on heated pads during the winter months
You don't have to use new soil, but there are other methods, such as pads, that are made for this application. Here is an article that will help:https://www.gardeningknowhow.com/edible/vegetables/lettuce/growing-microgreens.htm
I am trying Peter Burkes indoor sprout gardening! After I harvest the first batch....there are stems left in the soil. I want to make another batch...do I pull the old ones out? Will they grow again? Or turn them over in the soil and plant a new batch on top? What is correct?
Normally, you will toss the soil and start over.
They will not regrow, being that young, and leaving them in the soil can provide conditions for fungus to take over.
If you would like to re-use soil, I would make sure to bake it at 200 degrees for 3 hours. This will ensure that nothing (besides beneficial microbes) lives through the process. Essentially, it will be a fresh start.
This article will offer some more tips: