Answer: When you say "replant" do you mean there are existing roses? If so, I'm surprised that they would perform in "mostly shade" as they usually need full sun to bloom and thrive. I would not recommend them for a location that is "mostly shade." Roses are susceptible to powdery mildew if in poor sunlight and poor air circulation. Climbing roses can be extremely vigorous and need support and more maintenance than shrub roses, in my opinion. I think heritage roses (also called old garden roses) make great hedges. They are less fussy than hybrids, get very full, need pruning only once a year (January) and can bloom periodically. There is a list of roses (both heritage and modern) that do well in the desert in "Desert Landscaping for Beginners," 0-9651987 3-1, Arizona Master Gardener Press.
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