Unless its coco mulch its not toxic but Id be concerned about blockages. This summer we found an alternative to mulch at our local nursery. It is called sedum sod and it is a plant that you buy in like a square and you just place them where you want and they grow into the dirt. They are colorful too with shades of green, yellow and red. Some people put them on top of their roof to keep their roof cool. They are also drought resistant so they dont require alot of watering in fact I didnt water mine all year and they are thriving. We plan on putting it in several places in our yard |