The real risk: your municipal weed ordinance
Thousands of U.S. towns have a "noxious weeds" or "tall grass" ordinance, typically capping grass at 6, 8, 10, or 12 inches. Enforcement is almost always complaint-driven. No complaint, no inspector, no fine.
That means your strategy isn't "hide from the law." It's "don't give a neighbor a reason to call."
The 5-minute version
- Mow a 24–36 inch border along sidewalks, driveways, and the property line. Highest-leverage move on this whole page.
- Post a sign. Xerces Society, Bee City USA, Homegrown National Park, or a printable PDF labeled "Pollinator habitat — May." Signs reduce complaints.
- Pre-empt the HOA. Email the board: "I'm joining No Mow May from May 1 to May 31. I'll keep edges trimmed and signage posted, then return to the regular schedule June 1." Reasonable boards say yes; unreasonable boards have written proof you tried.
- Be a good neighbor. Tell the two closest neighbors in person. Most complaints come from immediate neighbors, not block-wide.
Why "Slow Mow Summer" is actually better
The original No Mow May UK study had data quality issues and the U.S. ecological case is weaker than people think — many "lawn flowers" that benefit are non-native (dandelions, clover). Research from Susannah Lerman at the U.S. Forest Service shows that mowing every 2–3 weeks at 4 inches across the whole growing season produces more bee diversity than a single uncut month.
Benefits:
- You stay under most tall-grass ordinances
- Pollinators get habitat May through September, not just May
- HOAs almost never complain about a yard mowed every two weeks
What about the June 1 problem?
One legitimate criticism: cutting tall grass back down to 3" on June 1 can shock turf and shred any pollinators using it. If you do No Mow May, drop the height in two stages — mow to 5–6" first, wait 4–5 days, then to your normal height.
Next: template letter to your HOA or state laws that may protect you.