Answer: Unless you are planting miniature roses, you'll have room in your 4 x 4 raised bed for a single hybrid tea rose. Hybrid tea roses grow at least 3' wide and it's important to have good air circulation all around to discourage disease problems. So choose a single rose bush for your new garden bed, or 4-5 minature roses.
Remove the existing vegetation and then spread a 4-5 inch layer of compost, peat moss, or other organic matter over the top of the bed and dig it in to a depth of about 10 inches. Your new rose bush should thrive. Enjoy!
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