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  • What are the best trailing flowers for window boxes?

  • While petunias will always be popular, explore unusual trailing flowers like the tropical red chenille plant (pictured). Other trailing flowers that will spill handsomely over the edges of your sunny window box planter include trailing ivy-leafed pelargoniums, black-eyed susan vine, and euphorbia ‘Diamond Frost’.

  • What can you plant in a window box?

  • Create a stunning display by planting tall flowers or foliage plants such as dracaena, angelonia, marigolds, or tulips in the center of the flower boxes. Fill the outside with cascading or filler plants such as sweet potato vine, asparagus fern, or kale. Where is the Best Place to Grow Window Box Flowers?

  • What herbs bloom in a window box?

  • Most herbs produce blooms — combine them in a fresh kitchen garden window box. Rosemary (Rosemarinus officianalis), mints (Mentha spicata hybrids) and catmint (Nepeta X faassenii) all produce blue to blue-lavender flowers.

  • What kind of flowers grow in a flower box?

  • Flower Box Facts. Plants such as fuschia and impatiens (Impatiens wallerana) benefit from a shady exposure and daily watering to keep their soil cool and moist. Others, including creeping zinnia (Sanvitalia procumbens), French marigold (Tagetes patula) and petunias thrive in spite of the heat and dryness of a sunny window ledge.