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EarthMark™ knows you may have questions about our garden boxes. In anticipation of some of them, we've provided the answers here.

Do these beds have open bottoms or are they closed?

The slotted openings in the side panels should lie flat against the corner brackets. If there is a gap, then most likely the panel is backwards. Flip it around so the top and bottom ends are angled outwards.

How long can raised planter boxes be extended?

Extension sets can be used to extend beds by 3' increments. A maximum of two extensions can be used with each bed, forming a 9' 4" long bed. For longer lengths, start a new bed to insure there is enough cross support.

Can beds be joined together end-to-end?

Yes, like-sized beds can be connected by lining up the bolt holes and passing the bolts through two sets of corners and walls.

How high should the beds be filled?

We recommend filling within 1" from the top of the bed, as loose soil will settle with watering and time. Top up with soil or compost as needed.

Why galvanized metal?

While it may not be the first material that comes to mind when you think of a garden bed, galvanized metal is a material of choice for civil engineering projects and is commonly used in agriculture and horticulture because of its durable weather-resistant properties.

Galvanization, or galvanizing as it is most commonly called, is the process of applying a protective zinc coating to steel to prevent rusting. Galvanizing protects by forming a coat of corrosion-resistant zinc. The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.

How long will galvanized metal last?

There are many variables. However, galvanized metal is well-known for its durability.

Galvanized Metal