While a clean lawn might look very nice, it also takes away from the bees. Weeds such as dandelions actually stand as a source of pollen for the bees. It's not the best quality of pollen but they spread so fast that their use is widespread. If you want to help in this way, all you have to do is skip your spring dandelion weeding chores!
Plant some flowers in your garden! Here are some plants that you can plant for the bees: Lavender, Sage, Rosemary, Black-eyed Susan, Sunflowers, Queen Annes lace, Buckwheat, Calendula. (Make sure the seeds had not previously been treated with pesticides)
If you want to plant these, please check that they are native to your area. There are many sites to check this. Here is one that we have found useful:
PLANT SOME FLOWERS
LET YOUR WEEDS GROW
Something that you might not think about is that bees need to drink like us. A good way to help the bees in your area is to put out a little container with fresh water in it. It can be just like a bird bath. You might even want to add some stones for them to sit on while they hydrate!
PUT OUT BASINS OF FRESH WATER