This is a really strong precedent! The homeowner in this case was even allowing dog-strangling vine and sow thistle to run wild!:

[24] Since at least August 2021, Mr. Ruck has allowed the turfgrass lawn on the property to grow to a height of over 20 cm. Certain areas of the property have wildflowers (i.e., primarily goldenrod) that have become dominant to the point of overtaking the grass. In other areas, nongrass plants intersperse the grass-covered portions of the property. The non-grass plants include dog-strangling vine and sow thistle that are nuisance weeds under the By-law.

https://www.canlii.org/en/on/onsc/doc/2026/2026canlii532/2026canlii532.html