DO NOT put fabric under mulch

What happens here

This instructional video provides critical tips for homeowners on maintaining mulch beds, particularly around trees, to prevent weed growth and improve longevity. It strongly advises against using weed fabric due to its ineffectiveness, as mulch naturally decomposes into soil, which can host weeds even above the fabric. Instead, it promotes direct contact between mulch and existing soil, coupled with pre-emergent application to suppress new weed growth. Additionally, the video highlights the inadequacy of rock borders for preventing grass encroachment and recommends trench edging for a cleaner and more effective boundary around mulched areas.