9.5" CorTen Steel Modular Raised Garden Bed - Weathering Steel
Build the perfect raised garden bed for your space with ultimate flexibility. Straightcurve's 9.5" Modular Planter system features premium CorTen weathering steel panels that connect in endless configurations, delivering professional-grade quality for raised beds, retaining walls, and custom outdoor projects.
Why Choose 9.5" Modular Planters?
Ideal Growing Depth: 9.5" height perfect for herbs, lettuce, flowers, and shallow-rooted vegetables
Unlimited Configurations: Mix and match 6 different panel lengths to create custom shapes and sizes
Living Finish: CorTen steel develops a beautiful rust patina that protects against corrosion while adding warmth
Safe Design: Folded lip eliminates sharp edges for safer installation and maintenance
Professional Quality: 2mm thick weathering steel with 1.8" top lip by Straightcurve
Note: Weathering steel panels arrive in their natural pre-weathered state (black/gray) and will develop their signature rust patina once exposed to the elements. Rusting time varies by climate.
Choose Your Height
Not sure if 9.5" is right for you? We offer three heights to match your growing needs:
9.5" Height (this product) - Ideal for herbs, lettuce, and shallow-rooted plants
15.75" Height - Perfect for most vegetables and perennials
22" Height - Best for deep-rooted crops like tomatoes, carrots, and root vegetables
Perfect For:
Raised garden beds for herbs, flowers, and vegetables
Retaining walls (single wall or closed shapes)
Outdoor furniture bases and storage boxes
Square or rectangular freestanding beds
Long garden barrier beds
Hard surface installations (patios and rooftops)
Custom tables and bench seats (add your own top)
Panel Specifications
Available Panel Lengths: 6 different sizes to choose from (select from variants)
Height: 9.5" (240mm)
Thickness: 2mm steel
Top lip: 1.8" folded edge
Material: CorTen weathering steel
Connector & Corner Options
Straight Joiners Used to connect two panels horizontally, extending either width or height of your planter.
Closed Corners Create traditional rectangular or square planters with 90° corners.
Open Corners Design L-shaped planters and custom configurations.
Bracing Requirements
When do you need bracing?
When using straight joiners: 1 brace per panel when creating longer runs
For 78" panels: 2 braces per panel recommended
Bracing Options:
Option 1 - Anchor Post & Bracket Kit Includes both post and bracket. Use anywhere on the panel that needs support. Required for bracing in the middle of 78" panels.
Option 2 - Universal Bracing Hooks onto straight joiners for support at connection points. Not suitable for mid-panel bracing on 78" panels.
Q: What's included with each panel? A: Each panel is sold individually. Connectors, corners, and bracing are sold separately so you can customize your exact configuration.
Q: How do I calculate how many panels I need? A: Measure your desired planter dimensions. For a simple rectangular bed, you'll need 2 panels for length + 2 panels for width, plus 4 closed corners and straight joiners if stacking height.
Q: How long does the rust patina take to develop? A: Typically 3-6 months depending on your climate and weather exposure. Wet climates rust faster than dry climates.
Q: Can I use these on a rooftop or patio? A: Yes! These are perfect for hard surface installations. The rust patina is stable and won't stain once fully developed.
Q: What's the soil capacity? A: Varies by configuration. A 4'×8'×9.5" bed holds approximately 19 cubic feet of soil (about 0.7 cubic yards).
Need Help Planning Your Project?
We know all these choices can be overwhelming! Our team is here to help you design the perfect configuration and ensure you have all the parts you need.
These baskets are high quality and perfect for a Main Street setting. Henderson Garden Supply was great to work with and helped me choose an option that would fit our budget and timeline.
The column kit with basket is easy to assemble and is very sturdy. I set it up in minutes but planting takes a little time. Plants with a hearty root system work best. I’m happy with the purchase and I’m now just waiting to see it mature.
I purchased the base unit & basket and I’m impressed by the quality. The steel base unit is heavy/sturdy enough to handle our prairie winds. The basket (also heavy steel) sits snugly on top and is able to carry the weight. Planting the sides is a bit challenging when the plants don’t have a lot of roots but if you take your time it works.
