I heard their roots are very long.
A 6-inch clay pot will do nicely since chives have a shallow root system.
For more information about growing chives indoors, please visit the following link:
https://www.gardeningknowhow.com/edible/herbs/chives/growing-chives-indoors.htm
Why can't I get my chive seeds to germinate and grow?
Here is a link to help you.
https://www.gardeningknowhow.com/edible/herbs/chives/growing-chives-from-seed.htm
I tried to save a terra cotta ( 1 gal?) pot of chives overwinter in a small patio shed. I brought the pot into the house about a month ago, watered it, and placed it under a grow light, but nothing has happened yet. Are my chives dead? Should they have sprouted by now if they’re still alive?
Plants are susceptible to winter kill if you don't keep them watered; the roots need that water to protect them. I think a month is ample time to get them to sprout. I would remove the plant from the pot and examine the roots. Live roots are somewhat fleshy; dead ones are withered.
I heard that wild chives makes a good organic repellent against aphids,is this true and how does one apply it.
I have heard of planting chives around other plants to repel aphids- some people have luck with this, but I think you need a lot of chive plants to have an effect. Applying a spray made of wild chives might actually be more effective, since the taste and smell of the chives would be directly on the plants. I don't know if this has been tested but it's worth a try. You could use the following recipe for garlic spray and just substitute the chives for the garlic:
https://www.gardeningknowhow.com/edible/herbs/garlic/controlling-pests-with-garlic.htm
I just harvested my chives for the first time this year. Of course, they immediately started growing quickly again, but there are now DOZENS of blossom stems showing. What is causing this? It has never happened previously.
I thought maybe they were pot bound and needed to be transplanted. I have never eaten the chive flowers. Do they taste like the stems?
The Chives are bolting and forming flower heads. You can remove the flower heads or you can even allow then to bloom and eat the flowers!
https://www.gardeningknowhow.com/edible/herbs/chives/growing-chives.htm
i need to move my herb garden
You can. It won't hurt anything. In fact, you can grow them indoors completely under lighting, as I do! Just make sure to give them plenty of light, and only water them once the top two inches of soil are completely dry.
This article will help: https://www.gardeningknowhow.com/edible/herbs/chives/growing-chives-indoors.htm
and how much water is good for chive seedlings?
One day outside won't hurt. As far as watering- there is no set amount. What you want is to wait until the top 2 inches of soil is completely bone dry before watering again. Water, slowly, until a little comes out of the drain holes, then stop.
Here is an article that will help: https://www.gardeningknowhow.com/edible/herbs/chives/growing-chives-indoors.htm
https://www.gardeningknowhow.com/edible/herbs/chives/growing-chives.htm