Silverlilac, "I know basil is good for tomatoes, will the curry cause any problems for my other plants?"
I'm wondering which "plant" you are referring to. There is a curry plant called Helichrysum but it is not an herb. Your mention of basil has me wondering if you think you are growing an herb plant. Helichrysum is mainly grown for its flowers and is not used for culinary use. Also it appears it does best in dry sandy soils, not the same environment that tomatoes would like.
There is a "curry leaf" plant, most often referred to as "curry leaf tree" which has the leaves you can use in culinary use and is often times referred to as an "herb". And yes, it is actually a tree, perhaps not something you want to grow in your veggie garden. It is Murraya koenigii.
Maybe you can Google those names and see for sure which one you have then you'll know best what to do. I'd hate for you to grow the Helichrysum thinking you will be using it as an herb.