Desert seeds wait for water
Weed seeds sit dormant in your gravel through the dry months — they're built to survive years waiting for rain. They're not gone in a clean-looking yard; they're loaded and waiting in the decomposed granite.
A storm triggers them all at once
Monsoon rain hits warm summer soil and germinates that whole seed bank simultaneously. That's why a yard you cleared in June can be overgrown a week after the first big storm — it's not new seed blowing in, it's the bank waking up.
Gravel and drip lines make it worse
Rock holds the seed and the moisture, weed-barrier fabric breaks down over years, and drip irrigation keeps things damp between storms. A desert front yard is, ironically, a great germination bed once that fabric fails.
The seed-and-burr window is short
You've got a couple weeks before the flush sets seed and goathead burrs harden. Pull inside that window and you stop the next flush from being worse; miss it and each storm compounds the last.
Getting ahead beats cleaning up
Pre-emergent before monsoon (late June–early July) plus a clean starting yard blunts the flush. After a storm, pulling fast — before seed — is the move. Recurring visits catch each wave small instead of as a rescue.
When the monsoon hits and your yard blows up, that's our post-monsoon cleanup — fast hand-pulling before it seeds. Or go recurring and let us catch each flush while it's small.
Updated 2026-06-05.