Vegetables For Window Boxes: Growing Vegetables In A Window Box

Vegetables Growing In A Hanging Garden Box
windowbox planter
(Image credit: BluHue)

Have you ever considered growing vegetables in a window box in lieu of flowers? Many vegetable plants have attractive foliage and brightly colored fruit, making them an edible substitute for expensive annuals. No matter where you live, a window planter veggie garden can add charm to a country cottage, suburban townhouse, or an intercity high-rise building.

How to Grow Window Box Garden Vegetables

First, you'll need to install window boxes if you don't already have them. If you rent your home or you live in an apartment type building, you may need to secure permission from the owner or tenant's association. Here are other considerations to keep in mind:

  • Consider the weight and durability of the window box. Plastic or fiberglass window boxes weigh less than wood or stoneware, but the former may become brittle when exposed to sun or freezing temperatures.
  • Choose the correct size planter. Window boxes which properly fit the window have the most curb appeal. Select a box which is at least as wide as the window or slightly wider. A 6 inch (15 cm.) deep box is fine for shallow rooted plants but install a 12 inch (31 cm.) deep box for growing root crops, tomatoes, or peppers.
  • Attach the window boxes securely with brackets. Choose brackets which hold the box slightly out from the building. This not only protects the building's exterior from water damage and stains, but also allows air to circulate behind the box. Boxes mounted directly on brick or dark sided buildings will absorb too much heat.
  • Secure the boxes a few inches (8 cm.) below the windowsill. This prevents rainwater from back splashing dirt onto the window. It also affords a more attractive view from inside the home as the planter, dirt, and stems are not as visible.

Selecting Vegetables for Window Boxes

Which types of plants you choose to grow in your window planter veggie garden will determine the productivity of your mini garden. You can make the most of your limited gardening space by cultivating multiple crops of microgreens. Or you can set your sights on tasty homegrown tomatoes. Dwarf tomato varieties are particularly well suited for containers. 

You can also mix and match. Try planting spinach in the same box as a chili pepper plant. By the time the pepper seedling needs more room, it will be time to harvest the spinach. Here are some suggestions for veggies which grow well in window boxes:

Once you've decided what to grow, fill your window planter veggie garden with a quality potting soil mix. Choose a type with time-release fertilizer or add your favorite brand. Follow seed packet or seedling tag recommendations for planting your veggies.

Laura Miller

Laura Miller has been gardening all her life. Holding a degree in Biology, Nutrition, and Agriculture, Laura's area of expertise is vegetables, herbs, and all things edible. She lives in Ohio.