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Yes, weeds can still grow in decomposed granite. If properly compacted, it can act as a good weed suppressant, meaning you’ll only pull weeds occasionally. But no ground cover is completely weed-proof. To further prevent weeds, you can try spraying your decomposed granite with distilled white vinegar.

No, gravel and crushed rock are different. Crushed rock is made in a quarry and has sharp, jagged edges. It’s most commonly used for building and construction.

Gravel naturally occurs in river beds or lakes and features smooth edges, making it a better choice for landscaping or other decorative areas. Like crushed stone, gravel can also be found in quarries, but it’s typically due to rock-on-rock erosion rather than machinery.

While they’re popular and have a lot of pros, the cons of river rocks include the following:

• River rocks don’t break down or provide nutrients to plants. 

• These stones can get hot and scorch nearby plants. 

• River stones may heat the surrounding soil to inhospitable temperatures. 

• Rocks can block rainwater from seeping into the ground if installations are too thick or tightly packed.

Most downsides occur when using river rock as mulch in gardens and flower beds. However, you can still incorporate river rocks into your landscape as long as you use them in the correct ways.

If you’re mulching in the fall, aim to lay down the material right after the first frost, which will vary by climate. Late October and early November are good time ranges to aim for. Try to lay down your mulch after a light rainfall to lock in moisture for root growth through the winter.