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Old May 8th, 2008, 08:54 AM
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badger badger is offline
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Join Date: Jan 2004
Location: Montreal
Posts: 4,076
How deep are your boxes? Scarlets will do less well in shallow soil, ideally it should be a foot or more deep. When I yank the vines at the end of the season, the root systems are quite impressive. The average window-box depth (5-7 inches) will not be sufficient.
Hummingbirds are attracted by the colour red. You may want to add a hummingbird feeder to make your courtyard even more attractive.
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