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Planning & Planting a Window Box

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Completed Window Box
Photo Credit: Sarah Landicho
This pretty window box planting was inspired by Learn2Grow’s Design by Function plan.
My window box dream finally came true! I live in a Chicago brick bungalow – an old house with concrete blocks that literally stick straight out of the front of the house. Those blocks are there to serve one purpose and one purpose only: to hold a planter box. And now I’ve got one!

We moved into our house back in 2003. While I’ve been creative with those three concrete blocks in the past (typically putting single pots atop them to zip things up a bit), I never got the window box…until now. I special-ordered a cedar box this spring – all 108 inches of it! Admittedly, the 6 x 6 x 108 planter was a bit intimidating at first. I’d never planted anything that long all at once before. But I was up to the challenge.

I started by looking at Learn2Grow’s “Design by Function: Window Box” article. Of course, my 108-inch-long box is a bit bigger than the planter featured, but the design principles are the same. I jotted down approximately how many upright, mounding and trailing plants I thought I’d need, then I headed to the garden center.

On the way there, I made a mental note of what to keep in mind while choosing the plants I wanted – namely size, light and water requirements, and color combinations. First, my box only measures 6 inches tall and wide, which meant that smaller plants would work better. Second, my box gets a mix of sun and shade: It’s sunny enough to support the sun worshippers but shady enough to add some plants that tolerate less light. Third, I had to think about what colors would look good out front. After all, I didn’t want my new additions to clash with the existing plants in my front yard!

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Empty Planter
Photo Credit: Sarah Landicho
A 9-foot-long window box can be a challenging – but beautiful – planter!
Now here’s where I should add that I’m more of an “eyeballer” when it comes to picking out the number of plants to use. Sure, I could’ve brought along my calculator and a ruler and figured out exactly how many plants I’d need to fill up each inch of my new window box, using proper spacing between each one. But I work better using my mind’s eye to picture the end result. That said, I got a nice long garden shopping cart to set plants up as I went, and I started reading plant tags.

I picked out what I figured to be the appropriate number of trailing, upright and mounding annuals, attempting to match up their sizes and care requirements as closely as I could. I chose pinks, whites and purples this summer (to match the mostly purple and pink bloomers in the front garden). My mounding selections centered on white and pink petunias, as well as some pink New Guinea impatiens. For upright growers, I picked pink Stampede™ Series salvia and some white and pink geraniums. And I love the trailing annuals – I picked white and purple bacopa (I just love the full look they add), Swedish ivy and a couple dicondra.

Tips
  • While the planter looks great dressed in its bright colors for spring and summer, I’m looking forward to changing it with the seasons. It can hold chrysanthemums and pumpkins in fall, while winter might feature evergreen boughs and lights.
Facts
  • Curb appeal is one of the top criteria that homebuyers and realtors look for in a house. Adding a window box is one of the easiest – and cost-efficient – ways to help boost the appearance of your home.
Faqs
  • Q: I’m always told to read and keep plant tags. Why?
    A: Plant tags are chock-full of information about plant size, habit and care requirements. While it may be tempting to combine two of your favorite plants, one is sure to fail if they’ve got different light or watering needs or if one grows so large that it’ll shade the other out. If you keep the tags, you’ll remember what worked (and what didn’t) for next year.
Resources
  • We’d love to see how your project’s grown! Visit our forums and post some pictures of your planted window box, and share your green thumb accomplishments with our Learn2Grow community!
    Read More...
 
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  • Creative Containers
    Containers can go anywhere, add value and provide luxury to a gardener regardless of experience. Take the Creative Containers course to learn great ways to get started in gardening.

Articles
  • Design by Function: Window Box
    It’s a small gardening space with big impact! A window box garden brings added charm to a home’s appearance and is easy to create. Even better: It can help boost curb appeal without bursting your budget. We’ll give you the design, you pick the plants!
  • Watering-In: A Key to Plant Success
    If you’re a novice gardener, you may be apprehensive about your watering ability. Learning the basics will eliminate some of the mystery – and even give you confidence.
  • Getting Started With Design by Function
    It’s your garden – why pay thousands of dollars to have a professional designer plant his vision? You don’t need to be a horticulturist or experienced gardener to have a gorgeous outdoor living space. Let us help you create that garden of your dreams. Welcome to Design by Function!
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