Efflorescence: Understanding and Addressing the Challenge in Landscaping

Posted by Charles Breslin on

Efflorescence: Understanding and Addressing the Challenge in Landscaping

Efflorescence is a common issue that can arise in various landscaping projects, affecting the visual appeal of hardscape elements. At Fanelli Landscape Supply, we understand the importance of maintaining beautiful outdoor spaces. In this blog post, we will delve into the topic of efflorescence, including its causes, prevention methods, and effective remedies, to help you overcome this challenge and enjoy long-lasting landscape features.

Efflorescence emerged from pores within a magnified area of a concrete paver. The calcium has been carried to the surface by water.
  1. What is Efflorescence? Efflorescence is a natural phenomenon that occurs when water-soluble salts migrate to the surface of porous materials, leaving behind a white or grayish powdery deposit. In landscaping, efflorescence can affect hardscape elements such as concrete pavers, retaining walls, or natural stone.
  2. Understanding the Causes: Efflorescence is primarily caused by the presence of soluble salts in the building materials used for landscaping. These salts can be naturally occurring within the materials or introduced through water or moisture infiltration. When moisture moves through the porous materials, it dissolves the salts, which later crystallize on the surface as the water evaporates.
  3. Prevention Techniques: Proper Base Preparation: Ensuring adequate base preparation with proper grading, drainage, and appropriate materials can minimize the chances of water infiltration and efflorescence occurrence. b. Material Selection: Opt for high-quality landscaping products that are designed to resist efflorescence. Consult with our knowledgeable staff at Fanelli Landscape Supply to explore efflorescence-resistant options available for your specific project. c. Jointing and Sealing: Applying polymeric jointing sand or sealants to fill gaps and joints between hardscape elements can help prevent moisture infiltration and subsequent efflorescence. d. Curing and Drying: Properly curing and drying the landscaping materials before sealing or finishing allows for the release of excess moisture and salts, reducing the potential for efflorescence.
  4. Effective Remedies: Cleaning Solutions: Regular cleaning with mild detergent and water can remove surface efflorescence. Avoid using acid-based cleaners, as they may damage the materials. b. Brushing and Power Washing: Gentle brushing or power washing with appropriate pressure can help dislodge efflorescence deposits from the surface. c. Efflorescence Cleaners: Specialized efflorescence cleaners are available that can safely dissolve and remove efflorescence from hardscape surfaces. Follow the product instructions carefully for the best results. d. Professional Assistance: In severe cases or for extensive efflorescence issues, it's advisable to seek professional assistance from experts experienced in efflorescence remediation.


Efflorescence can be a temporary challenge in landscaping projects, but with the right knowledge and strategies, it can be effectively managed. At Fanelli Landscape Supply, we are committed to helping you create and maintain beautiful outdoor spaces. By understanding the causes, implementing preventive measures, and utilizing appropriate remedies, you can enjoy hardscape features that remain visually stunning for years to come.

Remember, if you need guidance or have specific concerns about efflorescence in your landscaping project, our knowledgeable team at Fanelli Landscape Supply is here to assist you in finding the right solutions for your needs.


Polymeric haze from the use of polymeric joint sand may appear on your concrete products if the sand was not removed from the surface of the paver properly. This does not affect the integrity of the product or your installation. The hazing will weather away naturally with time and rain or it can be removed with a specialized cleaner. You are advised to contact your contractor.

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