Tomatoes
Tomatoes like Asparagus, onions, nasturtiums, marigolds, parsley, basil, and carrots. They don't like Kohlrabi, fennel, potatoes, broccoli, and apricot trees. Nettles are good also as the fruit from the tomatoes near nettles will keep longer with greater resistance to mould.
Reference: Basic Companion Planting for Australia and NZ by David Bigwood.
Jan Brown