johnny123, that is good info on the hand pollinating. I have never had a problem here because I keep bees on the property and there are plenty of pollinators. It seems though that this is a problem for many gardeners.
About the sugar water thing, I would discourage that. More likely to attract ants. What is needed for attracting bees is flowers. I have found bachelor buttons, chives, clover and oregano to be good. I am sure there are many others. The folks on the forum can tell what they find attractive to bees in their gardens. A succession of bloom is good so the bees get used to always finding something to their liking on your lot.
Gardening at 5000 feet elevation, zone 4/5 Northern Utah, Frost free from May 25 to September 8 +/-