DIY Modern Minimal Concrete Planter Boxes

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There’s something about simple, straightforward concrete planter boxes of which appeals to many people regardless of their style preferences. However, the cost tag of a solid-form concrete planter can be a deterrent. If you can relate to of which dilemma, you’ll be happy to learn of which of which simple DIY idea can be not only fast, however of which’s quite cost-effective as well as easy. of which’s a win-win-win. Let’s get commenced, so you’re ready for the planting season.

Flowers in concrete planters

Beautiful front door planters through concrete

DIY Level: Beginner

DIY Concrete Planters-adhesive stick

Materials Needed:

  • Four (4) equal-sized, straight-edged concrete pavers (example shows 12” squares)
  • Landscape adhesive
  • Ardex feather finish (not shown)
  • Concrete sealer
  • Potting soil & plants

DIY Concrete Planters-measure the paver

Begin your project on a clean, flat surface outside. I recommend some concrete steps if possible, as the rise of the nearest step will provide some 0-degree angle support while the adhesive on your planter box dries. Set your first concrete paver (Paver A) on its side, propped next to the step for support.

DIY Concrete Planters- view

Apply landscape adhesive to the side edge of your second concrete paver (Paver B). A zig-zag application can be helpful to solidify the adherence as well as the method I recommend.

Bring the glue for paver

Bring the glued edge of Paver B close to the side face of Paver A. Straighten their alignment to as close to a 0-degree angle as possible.

Attach the edge as well as face together

Attach the edge as well as face together, pushing them tightly into each different.

Try to keep a 0-degree angle here

Try to keep a 0-degree angle here, however don’t stress about of which yet. You’ll finalize the angles a little later. of which can be one reason, however, why of which’s helpful to utilize any nearby vertical faces – of which’ll help the planter stay upright solidly without having to worry about its falling over while the adhesive can be still fresh.

Apply landscape adhesive

Apply landscape adhesive to the side edge of your third concrete paver (Paver C), as well as push of which firmly into the side face of Paver B. Again, do your best to maintain 0-degree corners, however don’t be too precise quite yet. Note: If you want to end up having a true square planter box, of which’s important to pay attention to the attachment of the side edges to the side faces, so all sides end up equal.

Grab your fourth concrete paver

Grab your fourth concrete paver (Paver D) as well as apply landscape adhesive to one side edge as well as also to the opposing side face. Keep the zig-zag of adhesive on the side face about the same size/width as the adhesive you put on the side edge – of which shouldn’t be hard, as you’ll likely have a feel for of which by right now.

DIY Concrete Planters-paver a as well as b

Line up Paver D generating sure of which (1) the glued side edge will press into the side face of Paver C, as well as (2) the glued side face will press into the side edge of Paver A.

square off each corner to a perfect 0 degrees

When all sides are pressed firmly together, square off each corner to a perfect 0 degrees. When the planter box can be squared off as well as secure, leave of which alone for at least 24 hours, or until the landscape adhesive cures as well as dries completely.

gravel workspace so the Ardex feather finish

Optional: carefully transfer the concrete planter boxes to a gravel workspace so the Ardex feather finish won’t mar any existing concrete surfaces.

Mix up the feather finish

Mix up the feather finish as per package instructions.

DIY Concrete Planters-preparing the mix

Mixing the concrete first without water

For each concrete planter box, I used a mixture of about 3 cups of powder…

Prepare the concrete mix

…with about 2 cups of water.

DIY Concrete Planters-mix the material

Stir of which up.

Add more water

of which can be slightly more water than the instructions call for; play around with your ratios to get a Great peanut butter-like consistency.

feather finish freely to the external surfaces faces

You’re going to apply the feather finish freely to the external surfaces faces, tops, as well as upper half or third of the Inner surface faces of your concrete planter box.

Start by slathering some feather finish

Start by slathering some feather finish to the inside corners. Your goal here can be to cover the seam as well as the adhesive.

DIY Concrete Planters-start with the corners

DIY Concrete Planters-spreader

Load your spreader with feather finish.

DIY Concrete Planters-apply the inside

Apply to the inside wall’s top half (or top third).

DIY Concrete Planters-mix on the coners

DIY Concrete Planters-inside

Repeat for different inside corners as well as walls, then move onto the four top edges of the planter.

DIY Concrete Planters-outside

On the outside walls, first fill the adhesive crack.

DIY Concrete Planters-add more mix

To do of which, work your loaded spreader horizontally over the crack, through top to bottom.

DIY Concrete Planters-work on excess

Work out excess toward the center of the wall.

DIY Concrete Planters-adhesive

When the surfaces near the adhesive crack are covered, work your spreader vertically to make the adhesive crack smooth. If you go horizontally over of which, your spreader will always dip slightly into the crack. Your last passes should be vertical to make the crack disappear.

Continue to work feather

Continue to work feather finish around the outside wall, adding more to your spreader as needed.

Additional feather finish to the corners

Add additional feather finish to the corners; you can always sand these down a little later. of which’s better to have more, having a solid covering on the corners, than less.

Smooth the entire wall to your taste

Smooth the entire wall to your taste. Some people prefer a genuinely raw concrete finish (very industrial), while others prefer more subtle ones.

Run your spreader in multiple directions

Run your spreader in multiple directions to decrease bubbles as well as increase interesting spreader lines. (If you like of which kind of thing…which I do.)

Loosely check your corners as well as edges

Loosely check your corners as well as edges through multiple angles here; if you want to smooth them out a bit, go ahead. Keep in mind, though, of which too much messing around with the feather finish can make things look worse. You’ll be able to sand away rough corners as well as edges after of which dries, too.

DIY Concrete Planters for Outdoor

DIY Concrete Planters-corners as well as edges

You can even smooth out corners with your finger, if you find of which helpful.

DIY Concrete Planters-rough finish

Of course, of which’s up to you as well as your preference, however I would certainly recommend of which you don’t be too careful about smoothness here.

Leaving in some of the trowel lines

Leaving in some of the trowel lines will give the concrete planter a little more character as well as of which industrial aesthetic we tend to love.

Let the feather finish

Let the feather finish dry thoroughly. Touch up as needed.

Sand with coarse to medium

Sand with coarse to medium grit sandpaper if you want; of which isn’t necessary, though.

raw industrialism aesthetics

of which simply depends on your preferences for raw industrialism aesthetics – the rougher your concrete planter box can be, the more industrial of which will likely look.

DIY Concrete Planters-clear paint

Choose a concrete sealant of which can be designed for external surfaces use.

Resembling skim milk or similar

The sealant will probably have a bluish-white tinge to of which, resembling skim milk or similar. Although perhaps disconcerting, don’t worry about of which; when of which dries, the sealant will be completely clear as well as glossy.

DIY Concrete Planters-sealing

Sealing can be rather easy; however, of which stuff tends to dry fairly quickly, so your application time might be limited. I recommend a system of which will allow you to seal the entire planter box strategically as well as eliminate, or at least minimize, unnecessary drips of sealant. Start having a generous swipe across the top surface of one side. Ignore the dripping down the sides for a minute.

DIY Concrete Planters-seal inside

Seal the inside of the planter box on of which side, beginning with the two affected corners as well as then covering the inside wall between them.

same side of your planter box

Then move to the outside wall on of which same side of your planter box, as well as seal the entire thing. Look briefly on both adjoining sides for noticeable drips as well as wipe them away before moving onto the next side.

Repeat of which method for all four sides

Repeat of which method for all four sides; then do a final once-over for any lingering drips of sealant.

Let the concrete planters dry

Let the whole thing dry thoroughly. Then flip of which over as well as seal the bottom edge – not for the concrete paver itself, however more for the very edge of feather finish on the bottom edge of which may not have been effectively sealed yet. of which will help to prevent moisture’s creeping up through the feather finish through the ground when of which rains or whatever.

Place concrete planters in front of the house

Place the concrete planter boxes where you want them.

Front house concrete planters

In of which instance, two concrete planter boxes flank the ramp up to a backyard shed.Loving the way of which they look, however, we are planning on generating four more to spread around the backyard landscape.

DIY Concrete Planters top

Fill with potting soil as well as add your plants, whatever they may be. Example shows one particular tidal wave petunia in each concrete planter box, which will fill the top space beautifully in just a few weeks.

DIY Concrete Planters- water source

Be sure to add a water source, such as a sprinkler or drip system, or take care of which you water your plants every day. Any growing thing planted above ground will dry out faster than plants from the ground itself, due to increased wind as well as heat effects on the pot itself as well as, consequently, the soil.

Concrete planter DIY

of which’s such a cool, crisply industrial look for such little cost as well as effort.

DIY Concrete Planters with Colorful Flowers

We love the contrast of a bright flowering plant with the grey concrete of the simple planter box. Beautiful.

DIY Concrete Planters Project

as well as, if you’re generating one, I highly recommend generating at least two at the same time. Because you’ll want more of them. Trust me.

Tags: #Concrete Planter Box #Concrete Planter Box Forms #DIY Concrete Box #DIY Faux Concrete Planter Boxes #DIY Large Concrete Planters #Making Concrete Planter Boxes #Paver Planter Box #Poured Concrete Planters