22,795 Garden Web Discussions | Roses
Blackspot can be controlled by spraying in a tank sprayer a product containing propiconazole (Banner Maxx and other brands) or tebuconazole (Bayer Disease Control for Roses, Flowers, and Shrubs) at two week intervals. Or you can wait it out, as summers in inland Texas are usually too hot for BS to spread a whole lot.
mmjau, new rose growth is often red. It is only when it is coupled with a few another symptom that you should expect RRV. See the below photo for an example of a rose from my garden that definitely had the virus.
Fish as a foliar spray can burn rose leaves, especially in hot weather. Otherwise, no problem with the simultaneous application, since Rose Tone has a low percentage of fast nitrogen--just some urea in the chicken manure.
About mycorrhizae, the additive is not needed in garden soil, because roses will collect it from the environment, but maybe it would speed things up if this is a new garden area. Either of the application methods you describe should work. If you apply much phosphate fertilizer now or at any time, the rose roots will spurn the symbiotic fungus.
I missed this thread when it started last winter. I watch a couple of TGs in a no-spray garden here where they are pruned as shrubs, just cut back in spring to 3-4'. They are big but not huge monsters. The problem is that the laterals grow 4-6' and flop under the weight of blooms, often breaking themselves. Perhaps the trick would be to combine fairly hard annual pruning with a trellis of moderate size. These plants show pretty good blackspot resistance. Of course, the flowers are huge, gorgeous, and fragrant.
I wonder if the rampant growth reported by some is associated with hot summers, which we don't have here.
Some large Austins do take well to shrub pruning, for example 'Heritage', which made a beautiful 6x6' shrub for me, despite throwing an occasional 8' cane. (I currently have another one as a short climber on a support.)
Everyone's opinions will vary and the best thing you can do is experiment a little and see what works best for you.
Wirosarian, I've read that piece and have to say that I've recently stopped putting the styrofoam packing peanuts in the bottoms of the pots. I haven't noticed any difference in how the roses do so I will not be adding them from now on.
Vasue: thanks for your advice. the soil here is somewhat sandy I believe. Not beach sandy obviously, more desert like. I'm actually new to the area so I don't know a whole lot about it. The new home is in a development which is built on land from a former mine. I'm pretty sure there has been a fair amount of fill added, but it still looks sandy with lots of little rocks. So for planting soil considerations while potted, I guess I should look for something well draining? Not really sure.
I looked up this rose in some Aussie rose catalogues and it seems she is heat tolerant, the flowers hold well during hot weather and is regarded as an exhibition rose. I have seen her potted in nurseries and home hardware store garden centres and she has always looked healthy. I noticed on 1 rose ordering site that she is already sold out for 2015, so is obviously popular. I have been tempted, but I already have enough roses in this colour range ( if that is possible). I find that my roses often just take a rest in the very hottest weather.
Melodye.
Yeah, my Eden gets a bit of BS, but nothing it doesn't shake off fine here. I have him in really good sun now, because that also helped with the re-bloom. Mine looks so pretty right now! Last year he didn't even bloom because he got zapped so short by the polar vortex. I was afraid he might be Dr Huey. But no :) He's better than ever!
I have Red Eden, too, and we're definitely humid here. Mine doesn't really ball, exactly, but his petals may need help opening. The thing is, the petals stay fresh and pretty, but he can just take forever to open. My Cinderella Fairytale and Cl Clotilde Soupert both have some real balling right now, where the petals turn icky in the ball shape, but my Red Eden just needed a little loosening with my fingers and he looks great :) I do believe he really balls in lots of places, no doubt. But for me, the freshness of the petals makes a huge difference here.
I do love globular roses, though. He's about as globular as it gets, and that's part of his problem for some folks, I think! Without help opening, he can tend to look like a bunch of Christmas ornaments :D
They can eat a ton if they find your roses, yep! But I leave the butterfly ones, too. I have a big enough yard that they can go on my herbs, where I don't mind them stripping a whole plant bare for their survival. I very rarely find them on my other plants like roses anyway. They prefer their own host plants or favorite food plants, and I grow those for them (or they are already here naturally) :) It does help a lot! 99% of the time, that's where they are.
It's one of the myrrh-scented Austins. Some people don't like that scent even outside on the bush, lol. It's possible that after cutting, the top notes burn off and the more undesirable, underlying fragrance comes through. The chemistry of scent (in this case, *odor*), is mystifying.
John
I had this same thing happen with a Munstead Wood rose that had been in the vase for maybe 3 days, I thought the smell was coming from my kitchen trash can, so I completely cleaned and scrubbed it out to no avail, I was so confused! Turns out it was coming from the small bouquet nearby that was a little past it's prime, boy did it smell bad for something that at one time smelled delicious! Live & learn!
It's hard to be definitive without the blooms, but all of what you describe is consistent with Laguna as I know it. Remember that climbers often grow more slowly than a comparable rose HT or shrub, as they need to put down more extensive roots. Also, disease resistant doesn't mean entirely disease free,and you might get a few spots here and there like you have here - this is still a very healthy rose in great shape. Nothing like the blackspot on a truly troubled rose.
Laguna may grow fast for a climber, but it may not put out the longer canes or bloom much for another year or so. Climbers require patience, but your bush is off to a great start. Palatine is a great source for roses, and I think they're the only company I've regularly ordered from among about 5-6 sources that has never mixed up or mislabeled a rose.
Looks good!
Cynthia
Funny you should ask. Been meaning to pose the same question since I picked one up 3 weeks ago. Searching this forum turned up some helpful prior feedback. http://www.gardenweb.com/gardenweb/query/montezuma/topic=roses
As the lone specimen of Montezuma at Lowes, it stood out for its healthy foliage & coral salmon half-open bloom with a detectable fruity fragrance. The name rang a dim memory bell & the sale price of $8 proved irresistible. A nicely branched, properly pruned, grafted potted rose with 3 buds & one fresh bloom at the time, it's tagged as grown by Dewar Nurseries, a wholesale grower in Apopka, FL. http://www.greenhousegrower.com/business-management/dewar-nurseries-making-the-grade/ Like all new arrivals, it went into isolation in a sunny spot where I could keep an eye on it before introduction to the garden. The coral buds opened slowly to salmon blooms that expanded to include a wash of golden pink & held on the bush a good 10 days with the warm days & cooler nights we had. Coral America & strawberry-salmon Rosarium Uetersen/Seminole Wind were coming into bloom near the house & the hues of all three played well together. Snapping off the spent blossoms, noticed more buds coming along & just counted a dozen that will likely open in the next few days. Looks promising...
My old Taylor's Guide to Roses mentions Montezuma "comes very close to the grandiflora ideal...good all season bloom...slightly fragrant...4-1/2-5'...upright, very vigorous, compact and well branched...disease resistant and winter hardy...canes moderately thorny...leaves medium green, leathery, semiglossy".
I love my Montezuma! It has been going strong for a few years surviving our brutal winters and constantly giving lots of beautifully shaped coral orange blooms. One that I can count on for that perfect HT rose form that I love.