Our garden is full of bees, butterflies, hummingbirds, and other critters. We never have pollination problems in the vegetable garden, and enjoy many species of insects, and the ruby throated hummingbird.
Our gardens is bordered with lavender, texas sage, and shasta daisies. There is Monarda austromontana, and several agastache varieties throughout the garden. These plants really attract all forms of pollinating insects, and when incorporated around your vegetable plants will increase your yields. This is especially effective on summer and winter squashes, melons, and cucumbers. Any plant with seperate male and female flowers benefits greatly from pollination by insects, and/or hummingbirds.
Have a great day,
David Burton