Forgive me for these, but I found them so funny.

Why do potatoes make good detectives?
Because they keep their eyes peeled.

Why do cowboys always die with their boots on?
So they won't stub their toes when they kick the bucket.

Everyone has these on their face?
Tulips

Where did the vegetables go to have a few drinks?
The Salad Bar.

New gardeners learn by trowel and error.

Hope you enjoyed those. Feel free to add some more.