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Large outdoor planters - large plastic planter boxes

Large Outdoor Planters - Self Watering PVC Planter Boxes

Flower Window Boxes TM is a leading manufacturer and online retailer of large outdoor planters made from solid commercial grade PVC that look and feel like wood. Our large PVC planter boxes are a huge upgrade over wood due to their extreme resistance to rotting, bugs, and insects. Additionally, our flower boxes have many advantages over fiberglass, vinyl, and other hollow plastics which can be subjected to cracking warping and winter freezes. We can fabricate commercial grade custom planters virtually any size to meet your project specifications in various cube, rectangular, trough, and square shapes (scroll down to see our huge selection). Our large outdoor planter boxes have been featured in hotels, restaurants, condos, rooftops, and retail locations all over the country and are great for balconies, patios, decks, gardens, and other outdoor areas. They can be built big enough for small trees and we can even add caster wheels to our planters for rolling and easy maneuverability. Each one features a self watering reservoir option that can cut watering 3x fold for less maintenance. Our large white plastic planters are made from a heavy duty, architectural grade PVC that can easily be painted with exterior latex paint or left unpainted.

"Our revolutionary better than wood concept is changing the industry!"

Commercial Grade Plastic Planter Benefits:

  • Large PVC planters look like wood, are outdoor rated, freeze resistant, will never rot and they're LIFETIME Guaranteed.
  • They are made from 5/8" to solid 1" solid commercial grade PVC plastic to easily accommodate trees, shrubs, and bushes.
  • We make custom sizes and lengths up to 16 feet and can customize them to fit your exact space.
  • Our white plastic outdoor planters can be left unpainted or you can paint to match your home or business.
  • PEAK SEASON: SHIPS FULLY ASSEMBLED in 2-3 business days (not a kit). These are built to order by professional carpenters and ship out fast!
  • Our patented self watering planter feature reduces watering and cuts your watering by 3x fold.
  • Large PVC plastic planters are available in cube, rectangular, oblong, trough, and square shapes.

Extra Large Outdoor Planter Sizes

  • Large and Narrow Planters: 18"H x 12"W x Any Length, 24"H x 15"W x Any Length
  • Large and Wide Planters: 18"H x 18"W x Any Length, , and 22"H x 22"W x Any Length
  • Extra Large Outdoor Planters: 30"H x 18"W x Any Length, plus Heights and Widths up to 48" and Lengths up to 144"
  • Custom and Oversized Planter Sizes also available - Call 888-505-7715 today!

Large Outdoor Porch Planters and Patio Planters


Our outdoor planters and flower boxes aren't just great for commercial applications.  They can be great for home applications as well. Many of our customers will use our large outdoor porch planters to decorate their homes.  The commercial grade plastic can be painted to match your home, porch, deck, or patio.  They are perfect for landscaping a porch, gardening, or simply adding curb appeal.  In addition to our PVC planter line of products we also offer our own brand of cedar window boxes, pvc window boxes, and wrought iron window boxes.