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Rose Recovery



Question:

My standard Iceberg roses were fantastic until a few a months ago. I’ve tried everything to rejuvenate them but no luck. I’ve fed them everything you recommend but still no recovery. Please help.

Mark, Pennant Hills, NSW

Answer:

I was intrigued with Mark’s problem as I’ve seen it over many years in parks, home gardens, even in evidence during court cases.
To confirm my suspicion, I asked Mark for more information. He mentioned he recently treated the weeds in the driveway – 1m below – with a glyphosate herbicide. Miniature, lime green, distorted and shrunken leaves are telltale signs of glyphosate poisoning. In Mark’s case, the roses’ roots are under the brickpaved driveway. Seemingly a safe distance away, but no. I’ve seen the same damage where glyphosate was used 5-6m away but spray drift prevailed.
Rose understocks are very vigorous and their roots easily travel 5-6m. The glyphosate likely seeped through the cracks between the pavers and affected the roots. Unfortunately, there is no cure other than pull them out, rest and rejuvenate the soil then replant.

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Author: Q: MARK PENNANT HILLS | A: GRAHAM ROSS