Mulch, any mulch, can kill plants if the mulch is piled up against the stemes and trunks of plants…even large ones. Here’s a quote from the info sheet on that product (which Hewitt’s does not sell by the way).
“Where to Use:
Use Scotts Texas Select Classic Black Mulch around trees, shrubs, flowers or vegetables
- Leave several inches of space between the mulch and tree trunks, house foundations or other wood structures
- Where Not to Use:
- Do not apply around underdeveloped plants, before flower and vegetable seeds have germinated, directly against tree trunks or within several inches of house foundations or other wood structures