Have you ever seen window boxes that looked gorgeous as well as some that looked overgrown or lopsided or water-logged?
What is the key to successful and beautiful boxes? Here are a few tips to help you in your planning:
1. Pick window boxes that have holes for drainage. Plastic pots need to have holes put in the bottom and make sure they are big enough.
2. Use potting soil in your pots, not garden loam. Loam packs down and the plants can’t root through it.
3. If your window boxes are in the sun, or they are in a spot that is difficult to water, you may want to add water storing crystals into your soil which help retain water.
4. A good recipe for plant selection is to use a main plant that will be in the background such as geraniums, salvia or angelonia in the sun, New Guinea Impatiens in the part sun or begonias in the shade. For a 2′ window box, use 2-3 geraniums, for a 3′ window box use 3-4 geraniums. In between the main plants, put in a filler plant- something that stays lower and more compact such as lobelia, calibrachoa, compact verbenas, flowering vinca or petunias. In front of your main plants you can place some trailing plants such as vinca vine, ivies, sweet potato vine, scaevola, bacopa, trailing verbena or ivy geraniums.
Make sure you know how tall your flowers will get because you don’t want plants that grow 3-4′ in your boxes because they will bend over and break and by July you may be left with nothing. If you need help with window box arrangements, feel free to ask any of our annual staff for ideas.