A Perfect Match
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Like everything else designed to enhance a home’s exterior, the best window boxes complement the architectural style of the house. This wrought-iron example is a great match for the rectangular grillwork of the Tudor-style dwelling’s leaded casement windows.
Improve Your View
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Choose a box that spans the entire width of the window area and position it so the contents can be enjoyed (and watered when necessary) from indoors. A snug-fitting liner made of coconut fiber (coir) or sphagnum moss looks neat, retains moisture, and keeps soil from seeping out of the box.
Make it Fit
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Although this metal-framed planter complements the architecture nicely, it measures up a few inches too narrow for the window width. Quick solution: Add a few variegated vines or trailing petunias to the mix; they’ll soon soften the rigid vertical line of the uptight-looking marigolds and gracefully fill in the gap.
The Support Group
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When mounting a window box, take its weight with full-grown plants and saturated potting mix into consideration. These sturdy, decorative brackets—painted to match the window trim—offer a vital means of support.
Fill ‘er Up! (And Check the Water, Please)
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It’s okay to start small. Rapid-growing young annuals—the type sold in nursery and garden center six-packs—adapt more readily to their environment than more mature ones. Don’t be stingy, though: For a lush look, place plants closely together, water whenever the soil feels dry to the touch, and watch them grow.
Plant in Layers
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Put trailing varieties close to the front and side edges of the window box, well-rounded types in the middle, and taller, rigid or spiky selections in the back for height. In this sun-loving display, waves of delicate snow-white sutera, trailing white petunias, calibrachoa ‘Million Bells Trailing Blue’, flossy-topped periwinkle-blue ageratum, lavender-flowered verbena, and variegated vinca vine are effervescent partners for classic white and pink geraniums—traditional window-box favorites.
Solitary Refinement
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Crimson geraniums go solo in this classic window-box display, enjoying their well-deserved day in the sun. Hardy, heat-loving, drought-tolerant, and widely available, few flowering plants perform as reliably in containers as these ever-popular garden plants.
All Eyes on the Prize
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A long black planter box lifts a colorful collection of shade lovers up to eye level, where they can be enjoyed from above and below the deck all season long. In the mix (right to left): Violet torenia hybrids, scarlet begonias, pink-eyed impatiens, mini asters, and variegated trailing ivy.
Sparks in the Shade
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Salmon-colored tuberous begonias, lavender verbena, light-blue lobelia, and chartreuse sweet potato vine form a pleasing combination that thrives in shade, brightening the silvered cedar shingles of a seaside cottage.
Shades of Gray
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Ancient ivy climbs up the stucco wall, as variegated vinca vine and pretty, pale violas head downward, forming a subtle, but effective, combination that suits the quiet character of this classic gray-shuttered dwelling.