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How To: Herb Window Box

Posted by The Sill on

Window box planters are a go-to for both frustrated urban gardeners and nervous beginners. If you lack the time, energy, spare space, or green thumb to maintain a large scale garden – you can still enjoy greenery in small yet striking ways with window boxes. Available in an endless amount of choices of color, texture, and size, you are sure to find one that is a perfect fit for your space.

Herbs are a popular choice for indoor window boxes because of their utility. We choose basil, which prefers full sun, but there’s a multitude of herbs out there that can thrive on a shadier sill. Make sure to choose the right herb based on your light. 

Our Top 5 Light Shade Picks: Mint, Chamomile, Thyme, Parsley, Cilantro
Our Top 5 Full Sun Picks: Basil, Lavender, Oregano, Rosemary, Chives

* Make sure to combine plants that need the same amount of light and water if you plan to plant more than one herb in a single box. Planting in a plastic liner instead of directly into the box makes changing plantings easy.


Our Top Tips for Window Box Planters:


-       Pick Your Potting Soil 

Choose a good quality, fast draining soil. For small potted plants, including smaller window boxes, we recommend Brooklyn Blend potting soil. This lightweight potting mix also makes moving around window boxes a bit easier.

-       Create Drainage

It is important to have a box with drainage. If your window box does not have drainage holes, layer the bottom with stone or gravel to create drainage. We like to use a mix of lava rocks and charcoal.

-       Leave Room For Growth  

Don’t cram plants in too tightly. Leave room for roots to breath and plants to grow.

-       Prune & Snip

Don’t be afraid to clip and cut. Regular pruning keeps plants in a restricted space healthy and happy. Herbs especially benefit from constant harvesting - pruned plants grow back more thickly and compactly. 



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  • Thanks for reaching out, Emily!

    Herbs and plants with strong aromas usually repel home and garden pests like mice – but perhaps your fellow appreciated the opportunity to burrow somewhere indoors. I’d keep an eye on your other houseplants and perhaps give growing basil another shoot (or another strong smelling herb like mint). Let us know how it goes!

    The Sill on

  • I recently learned a mouse had been burrowing in my indoor basil plant! Natually I was horrified. After some googling I read in a discussion that basil is to mice as catnip is to cats. Do you know if this is true? We threw out our basil and have had no evidence of mice since then! We also have many other apartment plants , none of which seemed to interest this sneaky little rodents. Thanks for your thoughts :)

    Emily Levitt on

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