Flet’s use an ad-supported app called Piconhand, available free on the App Store.
Once you have the app downloaded and installed, follow The following Steps.
1.Sign in with your Google Credentials. Then you will see the list of your existing Albums
2.Be sure your Location Services Turned on.
Create a new Mobile album
Or name it whatever you wish,perhaps a circle name you'd like to access to.This gives you control of who gets to see this pics in google plus.
Select "Upload", pick a picasa album,but nothing happens untill you tap "start"
Choose a pic from your library or take a new one. The app let you to edit pics if you chhose that in preferences.
You'll see a progress bar when the pics are uploading.
After they are uploaded,go to Google+ and adjust the visibility of the album where you uploaded those photos,assigning that folder to that folder to the various circles you'd like to allow to see those pics.
This is a quick and easy way to send photos to Google+, and will suffice until Apple finally approves a Google+ app for iOS. But we won’t be holding our breath waiting for that.