A gardener? I guess that would explain this.

It's Always Sunny in Philadelphia (2005) - Charlie's Mom Has Cancer (S08E08)

Title	Season	Episode
Charlie Got Molested	1	7
Charlie Gets Crippled	2	1
The Gang Goes Jihad	2	2
Dennis and Dee Go on Welfare	2	3
Mac Bangs Dennis' Mom	2	4
$100 Dollar Baby	2	5
The Gang Gives Back	2	6
The Gang Exploits a Miracle	2	7
The Gang Runs for Office	2	8
Charlie Goes America All Over Everybody's Ass	2	9
Dennis and Dee Get a New Dad	2	10
The Gang Finds a Dumpster Baby	3	1
The Gang Gets Invincible	3	2
Dennis and Dee's Mom is Dead	3	3
The Gang Gets Held Hostage	3	4
The Aluminum Monster vs. Fatty Mcgoo	3	5
The Gang Solves the North Korea Situation	3	6
The Gang Sells the Bar	3	7
Frank Sets Sweet Dee on Fire	3	8
Sweet Dee's Dating a Retarded Person	3	9
Mac Is a Serial Killer	3	10
Dennis Looks Like a Registered Sex Offender	3	11
The Gang Gets Whacked	3	12
The Gang Gets Whacked (2)	3	13
Bums: Making a Mess All Over the City	3	14
The Gang Dances Their Asses Off	3	15
The Gang Exploits the Mortgage Crisis	5	1
The Gang Hits the Road	5	2
The Great Recession	5	3
The Gang Gives Frank an Intervention	5	4
The Waitress is Getting Married	5	5
The World Series Defense	5	6
The Gang Wrestles for the Troops	5	7
Paddy's Pub: Home of the Original Kitten Mittens	5	8
Mac and Dennis Break Up	5	9
The D.E.N.N.I.S. System	5	10
Mac and Charlie Write a Movie	5	11
The Gang Reignites the Rivalry	5	12
Mac Fights Gay Marriage	6	1
Dennis Gets Divorced	6	2
The Gang Buys a Boat	6	3
Mac's Big Break	6	4
Mac and Charlie: White Trash	6	5
Mac's Mom Burns Her House Down	6	6
Who Got Dee Pregnant	6	7
The Gang Gets a New Member	6	8
Dee Reynolds: Shaping America's Youth	6	9
Charlie Kelly: King of the Rats	6	10
The Gang Gets Stranded in the Woods	6	11
Dee Gives Birth	6	12
Frank's Pretty Woman	7	1
The Gang Goes to the Jersey Shore	7	2
Frank Reynolds' Little Beauties	7	3
Sweet Dee Gets Audited	7	4
Frank's Brother	7	5
The Storm of the Century	7	6
Chardee MacDennis: The Game of Games	7	7
The ANTI-Social Network	7	8
The Gang Gets Trapped	7	9
How Mac Got Fat	7	10
Thunder Gun Express	7	11
The High School Reunion	7	12
The High School Reunion Part 2: The Gang's Revenge	7	13
Pop-Pop: The Final Solution	8	1
The Gang Recycles Their Trash	8	2
The Maureen Ponderosa Wedding Massacre	8	3
Charlie and Dee Find Love	8	4
The Gang Gets Analyzed	8	5
Charlie's Mom Has Cancer	8	6
Frank's Back in Business	8	7
Charlie Rules the World	8	8
The Gang Dines Out	8	9
Reynolds vs. Reynolds: The Cereal Defense	8	10
The Gang Broke Dee	9	1
Gun Fever Too: Still Hot	9	2
The Gang Tries Desperately to Win an Award	9	3
Mac and Dennis Buy a Timeshare	9	4
Mac Day	9	5
The Gang Saves the Day	9	6
The Gang Gets Quarantined	9	7
Flowers for Charlie	9	8
The Gang Makes Lethal Weapon 6	9	9
The Gang Squashes Their Beefs	9	10
The Gang Beats Boggs	10	1
The Gang Group Dates	10	2
Psycho Pete Returns	10	3
Charlie Work	10	4
The Gang Spies Like U.S.	10	5
The Gang Misses the Boat	10	6
Mac Kills His Dad	10	7
The Gang Goes on Family Fight	10	8
Frank Retires	10	9
Ass Kickers United: Mac and Charlie Join a Cult	10	10
Chardee MacDennis 2: Electric Boogaloo	11	1
Frank Falls Out the Window	11	2
The Gang Hits the Slopes	11	3
Dee Made a Smut Film	11	4
Mac & Dennis Move to the Suburbs	11	5
Being Frank	11	6
McPoyle vs. Ponderosa: The Trial of the Century	11	7
Charlie Catches a Leprechaun	11	8
The Gang Goes to Hell: Part 1	11	9
The Gang Goes to Hell: Part 2	11	10
Old Lady House: A Situation Comedy	12	3
Wolf Cola: A Public Relations Nightmare	12	4
Making Dennis Reynolds a Murderer	12	5
Hero or Hate Crime?	12	6
PTSDee	12	7
The Gang Tends Bar	12	8
A Cricket's Tale	12	9
Dennis' Double Life	12	10
The Gang Makes Paddy's Great Again	13	1
The Gang Escapes	13	2
The Gang Beats Boggs: Ladies Reboot	13	3
Time's Up for the Gang	13	4
The Gang Gets New Wheels	13	5
The Gang Solves the Bathroom Problem	13	6
The Gang Does a Clip Show	13	7
Charlie's Home Alone	13	8
The Gang Wins the Big Game	13	9
Mac Finds His Pride	13	10
The Gang Gets Romantic	14	1
Thunder Gun 4: Maximum Cool	14	2
Dee Day	14	3
The Gang Chokes	14	4
The Gang Texts	14	5
The Janitor Always Mops Twice	14	6
The Gang Solves Global Warming	14	7
Paddy's Has a Jumper	14	8
A Woman's Right to Chop	14	9
Waiting for Big Mo	14	10
2020: A Year In Review	15	1
The Gang Makes Lethal Weapon 7	15	2
The Gang Buys a Roller Rink	15	3
The Gang Replaces Dee With a Monkey	15	4
The Gang Goes to Ireland	15	5
The Gang's Still in Ireland	15	6
Dee Sinks in a Bog	15	7
The Gang Carries a Corpse Up a Mountain	15	8