You know how in movies, the nerd suddenly gets a makeover and becomes the prom queen? That’s exactly what happens to chrysanthemums in September. While your zinnias are throwing in the towel and your tomatoes are looking like sad, wrinkled raisins, mums are just getting started. They’ve been chilling underground all summer, sipping their metaphorical iced tea, waiting for the sun to calm down. September’s cooler nights and shorter days whisper to them, “It’s your time to shine, buddy.” And boy, do they ever listen.
I remember one September when I was pulling out dead petunias—feeling like a gardening failure—when I noticed a little green bump in the corner. Three weeks later, that bump had become a massive purple pom-pom the size of my head. I literally said out loud, “Where did you come from? And why are you showing me up?” The mum didn’t answer, of course. It just sat there looking smug and gorgeous, like a cat on a velvet cushion.
The Temperature Sweet Spot (No Sweatpants Required)
Here’s the funny thing about mums: they hate the heat as much as you do after a July trip to the hardware store. Summer bloomers get all floppy and sad when it’s ninety degrees, but September’s gentle chill makes mums perk up like they just heard happy hour is extended. The air turns crisp, you finally put on a light jacket, and suddenly every bush in your neighbor’s yard looks like it’s wearing a party hat.
I’m not saying mums are snobby, but they absolutely prefer that Goldilocks temperature range—not too hot, not too cold. If September were a person, it would be that friend who always orders the perfect egg and asks for the check before the drama starts. Mums thrive on that vibe. They bloom best when you’re thinking about pulling out your sweaters, not when you’re sweating through your shorts. It’s a whole mood, really.
Mums the word: growing chrysanthemums