Bluestone vs. Flagstone Patio: Which Is Right for Your Outdoor Space?

A Natural Stone Showdown

When it comes to building a beautiful, long-lasting patio, natural stone is one of the most elegant and durable choices. At Gerhart’s Landscaping, we often help homeowners in the Lehigh Valley area choose between two classic options: bluestone and flagstone.

Both materials offer timeless style, earthy textures, and great durability—but they each bring their own set of benefits and challenges. Here's a side-by-side comparison to help you decide which is the right fit for your home and lifestyle.

What Is Bluestone?

Bluestone is a type of sandstone or limestone, most commonly quarried in the northeastern U.S., especially Pennsylvania and New York. It features:

• A blue-gray color palette (though it can include browns, greens, and purples)

• A smooth, flat surface

• Natural clefts or thermal finishes

Popular Uses: patios, walkways, pool decks, and entryways

What Is Flagstone?

Flagstone refers to a broader category of flat, sedimentary stones like sandstone, slate, or limestone. It’s known for:

• Varied color tones: tans, reds, browns, and grays

• Irregular shapes for a more rustic, natural look

• Naturally slip-resistant texture

Popular Uses: patios, garden paths, retaining walls, and fire pit surrounds

Side-by-Side Comparison

Feature	Bluestone	Flagstone
Color	Mostly blue/gray tones	Wide variety (red, brown, gray, etc.)
Shape	Uniform cuts or square pavers	Irregular, natural shapes
Finish	Smoother, can be thermaled	More textured and rustic
Slip Resistance	Good, especially cleft-finished	Excellent (naturally grippy)
Heat Retention	Can get hot in direct sun	Varies by type; usually cooler
Style	Modern, formal	Natural, earthy
Maintenance	Low, may darken when wet	Low to moderate, depending on stone type

When to Choose Bluestone

Choose bluestone if you want:

• A clean, contemporary look

• More consistent sizing for a structured patio layout

• A finish that pairs well with modern architecture or pool areas

Bluestone works especially well with formal garden designs, geometric patio layouts, and homes with slate roofing or cool-toned exterior colors.

When to Choose Flagstone

Choose flagstone if you prefer:

• A natural, rustic aesthetic

• Earthy color tones that blend with landscaping

• A layout with organic, curved lines

Flagstone is ideal for cottage-style homes, woodland settings, or outdoor spaces that aim to feel seamlessly integrated with nature.

Installation Tips from Gerhart’s Landscaping

At Gerhart’s Landscaping, we provide expert hardscape design and installation services that bring out the best in either stone. Here are a few things we consider when working with you:

• Drainage and grading to protect your investment

• Stone thickness and base preparation for durability

• Joint materials like polymeric sand or groundcover

• Matching your stone to existing architecture and landscape features

We’ll also help you weigh cost, availability, and long-term maintenance—so you get a patio that looks great and lasts for years.

You Can’t Go Wrong—But You Can Go Better

Both bluestone and flagstone offer natural beauty and lasting strength. The choice comes down to your style, budget, and how you plan to use your outdoor space.

Not sure which one’s right for you? Let us help. Our team at Gerhart’s Landscaping specializes in custom patio designs that blend form, function, and personality.

Thinking about upgrading your outdoor space? Contact Gerhart’s Landscaping today for a free consultation and personalized guidance on choosing between bluestone, flagstone, and other premium hardscape materials.