I started growing tomato plants from seeds last year. This year I decided to get a store plant as i couldnt find seeds for that variety. The plant came from a small garden store.
I was comparing my plant(started from seeds) to the store bought variety. Even though both plants were similar height, the stem from store plant was much stronger and roots were really thick. Whereas my plant was not as strong and roots were much thinner.
I also felt the store plant had better soil.
My question is what contributes to such big differences. Especially roots.