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Leaf loss

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From: Yvette Command
Minneapolis, MN
Last fall, my roses lost all their leaves except for a few at the shoot tips. What caused the problem and could I have prevented it?

Extension Message
From: James Schuster
Horticulturist and Plant Pathologist (Retired)
The most common reason a rose looses it leaves is due to a disease called black spot. You need to use preventive fungicides (get at least three chemically unrelated fungicides and rotate through on a 7 to 14 day schedule depending on how often the foliage gets wet from dews, rains or over head watering. start treatment at bud break and maintain spray schedule till after Labor Day.

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