Mulch is one of the cheapest ways to improve landscape beds, but it is easy to overdo. Here is what works in North Georgia.
How deep should mulch be?
Two to three inches. Less than that lets weeds through; more than that can smother roots and keep soil soggy, which is especially risky in slow-draining red clay.
Pine straw vs. hardwood mulch
- Pine straw is a local favorite: light, inexpensive, and it locks together on slopes so it stays put in a downpour. It breaks down slowly and lightly acidifies the soil, which azaleas and hollies like. Plan on 4 to 6 inches of fresh straw, since it compacts.
- Hardwood or bark mulch gives a heavier, tidy look and holds moisture well. Keep it at 2 to 3 inches.
- Dyed mulch is fine for looks; buy from a reputable supplier.
When to mulch
Late winter through early spring is ideal, before weeds take off. A light top-up in fall helps insulate roots before freezes.
Avoid the mulch volcano
Do not pile mulch against tree trunks or shrub stems. That moist, dark pile invites rot, rodents and insects. Spread mulch in a flat donut and leave a few inches of bare soil around the trunk so the root flare is visible.
Prep matters
- Pull weeds by the roots.
- Re-cut the bed edge so mulch stays put.
- Spread evenly, and rake rather than pile.
Need help? Our mulching and bed refresh service takes care of the whole job.