Slatted and ribbed walls, furniture, decor are extremely popular for indoors and I think, it’s high time to transfer this trend outdoors, too. The easiest way to incorporate slats into your outdoor decor is to clad some planters and make garden bed edges. Here are some ideas of such pieces for any kind of modern outdoor space but first
Where To Take Wooden Slats?
You can buy ready ones according to your project or take some reclaimed wood and give it a fresh look with stain. For example, you can use old pallets to get the wood and then achieve the look you want.
How To Treat Wooden Slats For Outdoors?
Besides staining, you will definitely have to add sealer on top to make the wood last longer. Keep in mind that you will have to renovate it from time to time, and still the wood isn’t a durable material for outdoors, and this is it’s only drawback.
Slat Edge Garden Beds
If you have some garden beds, you can easily add wooden slats to their edges and voila, a trendy look is achieved. You can also plan building garden beds with only slat edges for a sleek look. Such garden beds will elevate the look of your yard and make it more contemporary, and they can easily match not only a contemporary but also a modern, Scandinavian or zen garden.

The deck features a slat fence and a matching large garden bed with a tree. The combo is spectacular and the space looks contemporary. (via tulpenbaum).

The contemporary outdoor space shows off a stained deck and garden beds that match the slatted facade perfectly.

The contemporary front yard features a dark-stained facade, staircase and even garden bed, all matching for a sleek and modern feel. (via talgo).

The slatted bench and gardne bed composed a nice unit for outdoors, they don't take much space and look awesome.

This unit consists of slatted built-in planters and a bench, and it's a cool solution for a narrow deck.
Slat Edge Outdoor Planters
Slatted outdoor planters are perfect for many purposes, and the first idea is using them to frame the front door. Second, they can be rocked as space dividers, for that you’ll need a tall planter and maybe also tall plants. Such a planter can hide some storage space inside, too. Another idea is building a planter with a trellis, add casters to move it whenever you want to. Slatted planters can substitute railing, can be squeezed into small nooks and so on. If you don’t feel like making the planters yourself, you can buy a couple of ready ones, there are many such sleek containers on sale. These planters will easily elevate the look of your outdoor space making it more modern, and I totally love them in Scandinavian and modern farmhouse patios, too. Get inspired!

This nook is fully slatted, with a corner, a garden bed and a bench, and it feels modern and catchy.

This black slat planter includes a trellis and casters to move it where you need. Such a piece will easily become a perfect space divider.

This beautiful front space is done with grey-colored wood: there are steps and built-in planters that create a serene look.

This large long planter is a cool solution for a modern deck, and if you choose tall plants, it will be a cool space divider.

The narrow long modern planter is clad with slats and features simple grasses and blooms for a contemporary feel.

The big slat planter with a trellis and green vines covering it is a lovely solution to divide spaces.

The raised slat planter like this one is a super stylish solution, and legs make it look out-of-the-box.

The small vertical planter with slats is a cool modern solution, and this arrangement of trees and succulents is super bold.

These stained containers with greenery will elevate the look of your outdoor space and make it contemporary.

The small porch features a wooden staircase with built-in planters, with flowers and greenery.

The stained slatted window box looks modern and contrasts the dark facade that is still slatted, too.

This dark-stained planter is placed in the corner next to the staircase to save the space. (via pineandpoplar).

This skinny tall planter is a perfect piece to frame the front door, and any plant will look awesome in it. (via diyhuntress).

This planter system is built of several slat planters, and it's a cool way to save the space while growing more. (via wonderfuldiy).