Removing Directories older than x days

I have setup where directories are created daily for the given date in the following format, yyyymmdd and content placed there for temporary access.

After a while this content becomes stale and can be deleted.

The holding folder is
/home/user/holding/

and the folders created are
/home/user/holding/20151221
/home/user/holding/20151222
/home/user/holding/20151223

I want to delete directories older than x days

The following commands will delete files only and not the directories.

/usr/bin/find /home/user/holding/ -type f -mtime +5 | /usr/bin/xargs rm
/usr/bin/find /home/user/holding/ -type f -mtime +5  -exec rm -rf {} \;

To delete directories and files included, modify the above and change rm to rm -rf

/usr/bin/find /home/user/holding/* -mtime +5 | /usr/bin/xargs rm -rf

Note the asterisk and the removal of  "-type f"

Testing
Checking with -mmin +1 i.e. files/directories modified over 1 min ago. Always test what you are going to delete before proceeding.

/usr/bin/find /home/user/holding/* -mmin +1

/home/user/holding/20151221
/home/user/holding/20151222
/home/user/holding/20151223

/usr/bin/find /home/user/holding/ -mmin +1

/home/user/holding/
/home/user/holding/20151221
/home/user/holding/20151222
/home/user/holding/20151223

Therefore to delete the folders/directories in /home/user/holding/ and not /home/user/holding/ itself use /usr/bin/find /home/user/holding/*

Complete
Using with cron to delete folders older than x days, in this case 5, use the following.

0 6 * * *  /usr/bin/find /home/user/holding/* -mtime +5 |  /usr/bin/xargs rm -rf  > /dev/null

Note be very careful with rm -rf. It can wipe out your entire system if incorrectly used. Always test what you want to delete before attempting to do so