Dolomitic Lime vs. Hydrated Lime for Maple: Not the Same

You need dolomitic lime for maple yellowing; stores have hydrated lime. Are they comparable?

Difference

• Dolomitic limestone: calcium + magnesium carbonate. Slow, safe, cheap. (Sold as “Agricultural Lime” at Home Depot.)
• Hydrated lime: calcium hydroxide. 1.5× more reactive, caustic, not for containers.

Action

• Find “Agricultural Lime” (dolomitic) at Home Depot/Lowes.
• Do not use hydrated lime—burns roots, spikes pH.

Bottom Line

Buy agricultural (dolomitic) lime. Hydrated lime is wrong product.