About this time last year, we bought onion chive plants. I am not entirely sure how old they were when we bought them, but they seemed young from the little I know. They are healthy and springing back quickly after the winter and we have more than we can handle, so I want to give some plants away. I know it is good to divide them every 2 to 3 years, but is it safe for the chives if I do it sooner? Thanks!
Yes, it is fine to do so at any time. The two year mark is when the clump starts to get very unmanageable without division.
Here are a couple of articles that will help you with the care and division of chives:
https://www.gardeningknowhow.com/edible/herbs/hgen/dividing-perennial-herbs.htm
https://www.gardeningknowhow.com/edible/herbs/chives/when-to-harvest-chives.htm
I would like to know if it would be ok to add chives to the pot I have my green onions in. The pot is 8"×20" and the onions are already approximately 5" tall and spaced about 3 1/2" apart. There are a few spases vacant where the onions didn't make it. I was going to fill in those spaces. What do you think?
My research discourages this. Here's an article about companion planting for chives:
https://www.gardeningknowhow.com/edible/herbs/chives/chive-companion-plants.htm
ed the chives plant out of the pot, some of the roots are growing out of the soil at the bottom and sides. I'd like to know if I should transplant the chives? If I should, what size pot? I do have planting soil. I'd like to use these fresh chives during the winter.
Yes, I would definitely repot. It is usually best just to go up one or two pot sizes. If you put it in a pot that is too large, it causes overwatering and root rot. The article below suggests adding gravel to the bottom of the container, but that is no longer recommended. But the other advice may be helpful.
https://www.gardeningknowhow.com/edible/herbs/hgen/growing-herbs-in-containers.htm