What is companion planting? Companion planting is a method of growing plants together that are beneficial to one or both plants. As we are howdoigrowtomatoes.co.uk we will focus on companion plants for tomatoes, but I will put up a page with general companion planting guides soon. Companion plants for tomatoes BorageBasilChivesCarrotsCalendulaGarlicMarigoldsNasturtiumsOnionsPeppersLettuce Sage Borage Borage can…