Looking for geranium window box ideas? See how we installed classic white window boxes with red geraniums, American flags, and easy DIY mounts for charming summer curb appeal.
If you’re searching for simple and timeless geranium window box ideas for summer, you’re in the right place.
Today I’m sharing how we added white flower boxes filled with vibrant red geraniums and patriotic flags to our Maine home using easy-to-install DIY mounts from our local hardware store.
This window box project brought charm to our garage windows and created an inviting seasonal look perfect for Memorial Day, the Fourth of July, or any sunny summer day.
As featured in my Patriotic Vintage Decor Guide.
Summer Window Box Ideas with Geraniums and a Simple DIY Mount
Ever look at your home from the outside and feel like it’s missing a little something? I know the feeling all too well—especially in the summer. That’s when I remembered the old white window boxes we used to have at our Vermont home. I brought them up to our coastal Maine home, thinking they’d be the perfect touch on either side of the garage.
To give them a fresh coastal look, I painted the existing wooden flower box mounts a rich Essex green to match the house trim. It created a crisp contrast with the white boxes and really made the red geraniums pop.
Once the paint dried, we simply drilled the mounts below each garage window—a quick and easy DIY window box installation that completely transformed the space with curb appeal and summer charm.
How to Install a Window Box with Easy DIY Mounts
This quick DIY project is as simple as it gets. Here’s how we did it:
1. Paint your window box mounts (optional): We gave ours a fresh coat of Essex green paint to coordinate with the house trim.
2. Position the mounts beneath your windows: Make sure they’re level and spaced to support the full length of your window box.
3. Drill the mounts into place: Using an electric screwdriver, attach the mounts to the exterior wall with a couple of sturdy screws.
4. Place your window boxes on top: Once secured, simply rest the flower boxes on the mounts—and you’re done! For added stability, you can also secure the window boxes directly to the mounts with a screw or two through the base.
That’s it! This easy window box installation takes just minutes and instantly adds charm and seasonal curb appeal to your home.
Recommended Reading
You may also enjoy these White Petunias Antique Arrangement Ideas, one of my favorites!
Red Geranium Window Box Styling Ideas for Summer Charm
We filled each summer window box with seven to eight small potted bright red geraniums and lush green leaves—picked up from our local garden shop. These vibrant blooms instantly added a cheerful pop of color and classic curb appeal to our garage windows. We simply rested the flower boxes on the freshly painted green wooden mounts, creating a timeless red, white, and green color combination that feels perfectly coastal and patriotic.
Pro Tip
Geraniums come in a variety of colors, so feel free to mix it up with pinks or whites—or even opt for artificial geraniums if you’re looking for a low-maintenance option with the same bold impact.
Patriotic Window Box Ideas with American Flags and Red Geraniums
Decorating with Vintage U.S. Flags for the Fourth of July
Over time, I’ve collected a handful of weathered American flags from our Vermont home’s old flagpole—each one holding special memories. Rather than discard them, I love giving them a new life in our summer decor. For this display, I gently wrapped two of those vintage flags around the window boxes to honor the upcoming Fourth of July weekend. It’s a simple, sustainable way to add patriotic charm while keeping the focus on the geraniums.
As I stepped back to admire the setup—coffee in hand and Ella, our Bernese Mountain Dog by my side—I realized something: the red geraniums alone are a statement.
Paired with the crisp white window boxes and dark green mounts, they create a timeless, New England-style window box display that feels both classic and effortless.
More Patriotic and Americana Decorating Ideas You’ll Love
Looking for more red, white, and blue inspiration? Explore these vintage-style patriotic decor ideas, table settings, and DIYs to celebrate summer in timeless American style.
Final Thoughts on Patriotic Geranium Window Box Ideas
Adding red geranium window boxes to our Maine home brought such a charming pop of color and timeless curb appeal—especially with a few patriotic flag touches for the summer holidays. Whether you’re reusing old window boxes like we did or starting fresh, this simple DIY adds so much character to any home, from coastal cottages to mountain cabins.
Feeling inspired to style your own summer window boxes? I’d love to see what you create! Share your photos or tag me over on Instagram—and don’t forget to pin this post for later!
Frequently Asked Questions About Geranium Window Boxes and Patriotic Summer Decor
What are the best flowers for summer window boxes?
How do you install window boxes under a window?
Can I use artificial geraniums in a window box?
How do I add patriotic style to my window boxes?
What’s the easiest way to refresh curb appeal for summer?
Your Guide to Embracing Eclectic Style, Vintage Finds, and Thrifted Home Inspiration~
Love decorating with vintage finds, thrifted treasures, and eclectic charm? I’d love to hear from you! Leave a comment below, share this post with a vintage-loving friend, or join our Reader’s Showcase Series — where we feature your favorite thrifted and antique finds. Email me at [email protected] to be part of it!
Pin forLater!
More Patriotic Decor Ideas to Celebrate Summer in Style
Looking for even more red, white, and blue decorating inspiration? I’ve gathered some of my favorite patriotic decor ideas that are perfect for dressing up your home, porch, or garden all summer long. From vintage-inspired vignettes to easy DIYs and festive flag displays, these ideas will help you celebrate the season with charm and creativity.
Wendy from WM Design House
Jessica from Itty Bitty Farmhouse
Rachel from The Ponds Farmhouse
Kristy from Kristy Mastradonas
Regina from Saved from Salvage
Kristin from White Arrows Home
Michelle from The Glitzy Pear
Missy from Sonata Home Design
Kylie from True Mans Treasures
Susan from Hen and Horse Design
Ella is so very beautiful!!!
Hi Ann,
I loved your colorful display ideas for the fourth of July! The red geraniums in the window boxes were my favorite. I visited the people on your blog and thought Wendy’s boxwood wreath with the shaggy ribbons was a unique idea. All of you gals are truly amazing! Always an uplifting experience to see what is on your site.
Susan
Thank you so much Susan. It’s always nice hearing from you😃
Your window boxes are gorgeous Ann. I always love geraniums in mine for the summer. Such a classic look.
Thank you Kim!
Ella cracks me up!! Always the scene stealer!!! Everything looks perfect for Summer!
Thanks Jennifer isn’t she a character:)
I love the window boxes! That is something that I definitely want to add on our home. Just lovely!
Thank you Kylie!
I love how you’ve repurposed your window boxes and filled them with red geraniums for the season! They’re perfect for July 4th and all summer long! Always love a sighting of your beautiful pup, too!
Thanks so much Kristy!
Such lovely window boxes, Ann, I love the detail on the front and the green brackets you used. As always, your photography is stunning.
Thank you so much Wendy!
I love how these look, Ann! I am thinking of putting window boxes o.n the guest cottage!
Thanks Molly. They’re simple and easy and not too much care involved. And the pop of color looks so nice from the road❤️
Love your patriotic touches. Ella looked like she had fun too! Pinned!
Thank you so much Cindy❤️❤️
Ann,
I love using red geraniums in my decor all summer. These window boxes are amazing.
Thank you Rachel. They are simple and easy, you know my gardening skills❤️😉
Your window boxes are gorgeous. I just love how you used geraniums! A flower my mother would use often in her gardens. It was great joining you today for the hop! Happy 4th to you!
Thank you Susan my mother too that is why I chose them❤️
These window boxes are amazing. Perfect style for your home and the geraniums (one of my favorite flowers) look perfect in them! I love how you have used the flag and your dog is adorable! It is fun to “hop” with you today! Thanks for a great post! ~Missy
Thank you so much Missy. Have a wonderful weekend🙏