Landscaping Dilemma

Hedge.png Grassroots Modern reader Crystal recently asked, "How can we make our backyard private while still abiding by HOA standards of no fencing?" I suggested creating a natural wall, or a 'privacy screen', from plants - bamboo or a hedgerow. A hedge can be created from a number of plants, growing up to six feet tall depending on what you plant. They can also be as formal or informal as you like. Here's a helpful link from About.com. Can anyone offer any other suggestions for Crystal? Types of plants, creative solutions, etc. Have any of you had a similar landscaping dilemma? How did you deal with it? As always, links and photos are helpful and appreciated!

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Please excuse me while I pay some bills...