Who/Why: Transplants are better for long season crops, such as peppers or tomatoes. They take awhile to grow and you have to worry about keeping those plants out of the frost if you grow them at home. Where as you can pop a squash seed in the ground and bam, you have squash, no problem. Transplants can also be helpful in growing things that are challenging to grow from seed, such as some herbs. It is always much cheaper to grow things from seed but sometimes there is 1. not enough time before growing season or 2. your seeds did not come up.
Where: You tend to find better quality at smaller, local centers. Our favorites are Shades of Green and Fanicks.
Happy Sunday Gardening!