Lime and Roses: The Truth About Soil pH

Contrary to old advice, roses prefer slightly acidic soil (pH 6.0–6.5). Adding limestone (which raises pH) directly to the planting hole or near roots causes yellowing, stunted growth, and nutrient lockout.

When Lime Might Help

Only if a soil test shows very acidic soil (below 5.5), lightly sprinkle lime around the base (not near roots) in early spring so rain washes it in gradually.

What to Use Instead

At planting, add a cup of bone meal to the hole—it provides phosphorus for root development without altering pH drastically. For ongoing health, focus on organic matter (compost, well-rotted manure) and a balanced rose fertilizer.

Test your soil first; don't guess. Your roses will thank you.