weed prevention

Question

We live in southwest Florida, Hot! Hot! Hot! Recently had landscaping done. They put in plants, palms, etc. and mulch. We are overcome with weeds. They did not use any plastic or anything else under the mulch. They said it causes mold here. Is this true or have we been ripped off? We have sprayed weed killer to no avail. Help!!

Answer 1

I would recommend some kind of landscape cloth be used.

https://www.gardeningknowhow.com/garden-how-to/info/common-garden-mistakes.htm