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'Graham Thomas' rose Reviews & Comments
Discussion id : 120-944
most recent 14 APR HIDE POSTS
Initial post 14 APR by newtie
G. Thomas is one of a few David Austin "New English Roses" i have found to be worthwhile in the U.S. Gulf Coast Region. Zone 8b. 56 " rain much of it typically in the winter. I have it on its own roots, ~10 years old. Tendency to get leggy unless judiciously pruned. Will climb or can be pruned as a 5-6 ft shrub. Will also cover a wall if offered support such as trellis or wires and good nutrition. One of only three, of the half dozen i have tried that does well here. The others are "The Pilgrim", and "Gertrude Jekyll" the latter is outstanding here if pruned back each year fairly hard and a very important Austin introduction as it is a perfect replacement for the great rose Comte de Chambord which struggles here due to disease.
Discussion id : 104-018
most recent 4 AUG 17 HIDE POSTS
Initial post 4 AUG 17 by Sambolingo
Available from - Old Market Farm
Discussion id : 93-007
most recent 3 SEP 16 SHOW ALL
Initial post 26 MAY 16 by raingreen
Is Graham Thomas resistant to leaf scorch/cane scald in hot, dry areas?

Thanks, Nate
Reply #1 of 5 posted 26 MAY 16 by Nastarana
If it gets enough water. To grow GT, I found that winter irrigation was needed. GT is not drought resistant.
Reply #2 of 5 posted 27 MAY 16 by raingreen
Thanks Nastarana. Yes, heat scorch is affected by watering, but even WITH watering, many modern roses show scorch after the first 100 F+ heat wave.

So it sounds like GT was a winter grower for you, like one of the old Teas? Interesting. I had seen you mention GT's need for winter watering on gardenweb.
Reply #3 of 5 posted 27 MAY 16 by Nastarana
I noticed that GT bloomed best when there had been a rainy winter. One winter when there had been almost no rain, GT did not bloom at all. From that I concluded that winter irrigation was necessary for that rose.
Reply #4 of 5 posted 27 MAY 16 by raingreen
Ok, understood. Thanks!! Nate
Reply #5 of 5 posted 3 SEP 16 by SweetheartofJ
Thanks for sharing your experience. It is so valuable to learn from others on this site.
Discussion id : 93-539
most recent 26 JUN 16 SHOW ALL
Initial post 18 JUN 16 by oakslesly
After four years of fighting mildew--in dry southern California--- I am ready to shovel prune this giant. Nothing I have tried gets rid of the mildew. It's in full sun, is huge (six feet by six feet) and blooms constantly. Due to the mildew, leaves and blooms are stunted and unattractive. Suggestions please.
Reply #1 of 1 posted 26 JUN 16 by raingreen
Powdery mildew may be exacerbated by dry soil (too far from spray heads, next to tree roots, etc), but I'm not positive on this (sorry). Heavy feeding with nitrogen may also exacerbate mildew, altho I'm not certain. Based on the 2 plants I've seen in southern California, Graham Thomas is moderately/slightly susceptible to mildew.

In my response you would think I'm a lawyer, but it's just hard to pinpoint causes/solutions to PM.
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