I'm looking to replace the mulch in my landscaping beds with crushed limestone, which is used in concrete work. However, I'm getting mixed advice on whether this is a wise choice. A supplier warned that it could harm my plants, while a farmer suggested it might actually be beneficial. Can anyone clarify whether using limestone instead of traditional mulch is a good idea?
3 Answers
Honestly, moving to crushed limestone is probably not the best decision. Rocks like that can absorb heat, making it tough for your plants to retain moisture. Plus, they tend to compact, creating an environment that's less friendly for most plants. Some hardier plants, like yews or boxwoods, might manage, but you'll likely find that most others will struggle with root burn from the heat and will have a hard time taking up the moisture and nutrients they need.
I really can’t see it being beneficial. Rocks hold heat much more than mulch does, which can effectively cook your plants. Unless you’re only growing cacti or something super hardy, I would steer clear of crushed limestone for your landscaping. You might want to check out other options that are friendlier to most plants.
It's definitely a bad idea! I've seen countless discussions about rocks in landscaping, and they just don’t offer the right conditions for plant life. Sure, a sprinkle of lime can help, but adding a ton of crushed limestone isn’t the answer. Some plants might adapt to rocky beds, but most will struggle.