The answer to 'which is better mulch or rock' is that both have their advantages, and the best choice depends on your specific landscaping needs and preferences. Mulch is generally less expensive, provides more nutrients for plants, and helps retain moisture in the soil. Rock, on the other hand, is more durable, requires less maintenance, and can create a more polished, finished look in your landscape.
When deciding between mulch and rock, consider factors like your climate, the types of plants you have, your budget, and the overall aesthetic you're going for. Mulch is a great choice for gardens, flower beds, and areas where you want to encourage plant growth. Rock works well for pathways, around trees and shrubs, and in low-maintenance areas where you want a clean, modern look.