Hi dear...
Have this happened to me. I had to buy more to put bees in my garden. Sad that.

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I found some articles that can help you:
http://www.gardeners.com/how-to/attracting-beneficial-bees/5024.html

and

http://www.rhs.org.uk/advice/profile?pid=648

Good Luck..

Here is a link that might be useful: Georreferenciamento

This post was edited by PeterSun75 on Sat, Jul 26, 14 at 11:58

Hello there =) you might want to consider planting some clover on the lawn or in some big unused area I have found in my area which is oregon. that i didn't have very many bees tell i tuned into their natural foraging habits. When i planted Borage in planter and then the wild clover on my lawn this year. just called the little guys in it seems when clover flowers honey bee's can resist it. then while they are in the garden they start to see other things as well. i usually mow my lawn to get rid of the flowers on the clover and that makes them move right to my melons squash cucumbers stuff like that. maybe trying something like that might help. If not they maybe some leaf cutter bee boxes and bees would be good.
this link will help you with that if need be.http://crownbees.com/
they are a summer bee so they do great with pollanating veggies. also if you roses have small NEAT cuts in them then they do that they like roses.

Here is a link that might be useful: TheItalian Garden