"To grow an abundance" means to cultivate or increase a large quantity or variety of something, often referring to resources, such as plants, money, or opportunities. Full definition
Tropical North Queensland is blessed with ideal conditions for harvesting succulent seafood and for growing an abundance of fresh fruit and vegetables. (daintreerainforest.com)
Thanks to the spring and summer climate we were able to grow an abundance of cherry and grape tomatoes in red, yellow and orange, arugula, three kinds of lettuce, radishes, celery, parsley, dill and even one melon. (fieryfoodscentral.com)