Colloquial In Terms of the Garden

Amid fits of laughter over dinner tonight, as my husband told us about a co-worker who showed up at work with an eyebrow missing ... and no explanation ... my son complained that his iced mint tea was not as dark as mine. Meaning, yours has more flavor, mom, and mine has more ice. So my husband pointed out the window and said, "Don't you wonder why their grass is greener?" 

It took me a minute to change gears and get what he was saying, but we had to explain it to our son. That sparked a fun conversation and we had a good time coming up with other colloquial terms. Encyclopedia dot com offers the following synonyms for colloquial:  "conversational, informal, everyday, casual, familiar, chatty, idiomatic, vernacular." (The Oxford Pocket Thesaurus of Current English | Date: 2008.) 

Here are some nature- and garden-based colloquials we came up with: 

• The grass is always greener on the other side
• The bees knees
• The early bird gets the worm
• A rolling stone gathers no moss
• The second mouse gets the cheese
• A bird in the hand is worth two in the bush
• Corn is knee-high by the fourth of July

Have you got any to add to the list?