Much of companion planting is based on observation and folklore. But a few studies have shown limited positive effects, such as using collards to ... a pollinator magnet. Green lacewings also ...

Aside from broccoli, types of Brassica include cauliflower, collard greens, kale ... These are known to be beneficial companion plants for strawberries because the pungent odors of garlic and ...

Collard greens are part of the South's culinary traditions, especially in Black households. Now, a researcher is studying how differences in the leafy vegetable determine its taste and hardiness.