The Anxious Gardener's Book of Answers by Teri Dunn Chace

Author:Teri Dunn Chace
Language: eng
Format: epub
Publisher: Timber Press
Published: 2012-03-01T16:00:00+00:00

ROSES

SPUR A GLORIOUS SHOW FROM THESE SOMETIMES DAUNTING BEAUTIES.

Desperate spraying

Roses, particularly the older yet still popular hybrid teas, do get pests and diseases. When you find your bush infested with aphids or Japanese beetles, or mildewed, or marred by blackspot, it’s only natural to be upset. You may storm down to the garden center, scoop up a can of a product whose label mentions treating rose problems, and blanket the bush with spray. But unless you have the right product, it won’t help—and could even be harmful. Even if you choose a spray that is clearly labeled for the culprit or disease, if you don’t follow the label directions regarding timing and amount (not to mention safe application), it won’t be as effective as you want it to be.

THE RIGHT WAY TO DO IT Take a more methodical approach. First, examine the plant carefully, including under the leaves, to accurately diagnose the problem and assess its scope. Next, pick off all afflicted plant parts, as well as any on the ground at its base, and throw them in the trash.

Then research remedies. Japanese beetles can be handpicked and drowned in a bucket of soapy water (do this in the evening, when they congregate). You can blast off aphids with a spray from the hose. Common rose diseases respond to correctly applied sprays, but also to careful sanitation and proper care (including watering on the ground so the leaves don’t get splashed). If you decide to spray, try less-toxic treatments first and always read and heed the label. If the material is at all dangerous—this sort of caution will be noted on the label—protect yourself with eyewear, gloves, long pants, and long sleeves.

IF I GOOFED, CAN I FIX IT? With renewed attention and prudent care, a rose will often recover from a common pest or malady; if it doesn’t, it’s time to replace it, possibly with a tougher, more resistant variety. Let this be a reminder to take good care of your rose plants so they are less vulnerable to problems. Desperate spraying is not only foolish and wasteful, it doesn’t remedy the actual problem.

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