22,151 Garden Web Discussions | Roses
I read the following on another post - sure hope this works out, I have missed Pickering!
Just an update on the Pickering situation..... I called Pickering 2 or 3 months ago, but don't think I posted what I learned on GW. Sorry about that. Anyway I called because I'd ordered roses from them to be shipped to friends of mine in Canada as a gift. This was to at least semi-replace my order that they couldn't ship to me in California. While I was on the phone, I asked about the future possibility of those of us in the USA getting their roses shipped to us. I was told they expect to begin shipping to the U! SA again this fall, and if I understood correctly, this coming season will be the last one for them selling grafted plants. After that they are going own-root. I didn't ask if they still planned to sell roses bareroot or if they'd be potted (or the size if they go this route).
It's possible it could be your new roses were overfertilized
from the miracle grow and that caused the problem...
And the MG soil you added around rose roots probably also had fertilizer added in to it.
What do you others think???
You may want to try using mulch around that rose
since the soil is drying and cracking...
This post was edited by jim1961 on Thu, Aug 1, 13 at 9:55
Michael, a lot of these roses seem to have several names - Millie has also been Ghita and Mum in a Million, Claire has also been Liliana, Eleanor has been something else which I cannot recall, Philippa seems to have vanished off the radar but is probably just using a different name........so Clara may well be known by another name altogether.
I have my own name for them - Irritating Eyesore.
If only my Memorial Day could look like yours, Susan. Mine always has thrips damage and simply can't take our heat. Maybe things will get better in a year or two. It didn't help to transplant her this spring either. Anyway, your photo is gorgeous and that look of pink porcelain was one of the reasons I bought MD in the first place. Thanks for posting your photo. Diane
When I lived in that area, many roses defoliated during the worst heat of July & August. I kept up the watering, fed them at the beginning of Sept. & enjoyed a new flush of leaves & blooms when the weather moderated. Usually, in September, the nights start to get cooler & give the plants some relief.
Fall blooms were often the best of the year in that climate. And once the roses recovered they were beautiful into December.
Defoliation is the plant shutting down because of stressful adverse conditions. Sometimes it's only one stress that causes it, but more usually it is a combination.
So for example, a rose being stressed by a lack of water will not need much pressure from black spot to start shutting down. Similarly, a rose stressed by an untreated black spot infection will not need much pressure from a lack of water to start shutting down.
Unfortunately, if the shut down continues for too long it can be fatal. Roses and other plants are not immortal, and they do die if conditions are adverse enough.
I have a hedge of 6 Gold Medals and I love 'em. They were planted earlier this year in May and they have grown about a foot taller and have produced blooms non-stop.
The only cons are chili thrips love 'em and the blooms fade to a brownish white, sometimes with a tinge of green.
Thank you everyone for the responses!
My Maria Stern gave me a ton of variants of itself. Sometimes bi-colored, sometimes pink, sometimes orange. I never knew what I would get when I woke up!
When I picked up Gold Medal it had a few buds on it I let it keep. The first one bloomed yesterday, and it was gorgeous! THankfully it Faded little when I picked it today. And I LOVE how it looks next to Intrigue and Red Sensation. Not quite sure who has the better scent between GM and Intrigue though.
These are all in pots on my patio,
That would be my first concern, windeaux. Andrew, there is a very convenient thread about breeding for disease resistance on the RHA, posted by David Zlesak this morning. You might find it interesting. Kim
Here is a link that might be useful: Vance's disease resistance rose breeding review
be kind! I think there are a lot of reasons why people may have boring lawns, and don't take joy in "flowers and bugs and dirt and sweat"
--they may be dirt-and-bug phobic. I am.
--different priorities for their time and money. boring and neat is far better than neglect.
--climate. Traditional lawns and flower beds in my area of the country are a no-go.
My neighbor is very neglectful as a gardener. Nothing ever watered, all browned and dying, nothing ever weeded. And to top things off when her hubby and her put in a raised bed box with landscape timbers they built it up against their front deck only three sided with the back next to the LATTICE, so all their soil keeps eroding away and they just keep dumping in more crap topsoil as a filler. Drives me nuts! I have to bite my tongue! lol
MulchMama, the full paper is not yet available to me through the university. The wording in a reviewed accepted scientific paper is subject to scrutiny by the reviewers and the editor. This wording is also consistent with what I have read in the scientific literature.
The commercial fungicide that they compared with is Topaz (a penconazole based "azole" family fungicide).
For plants I assume that the greatest concern is whether the Topaz is damaging the mycorrhizal fungi relationship with the plant roots.
"Abstract
In order to quantify the importance of ectomycorrhizal fungi on nutrient uptake from the coarse-soil fraction of a haplic Cambisol (alumic), a microcosm study that allowed for nutrient budgets was designed. Ectomycorrhizal- and fungicide-treated spruce seedlings were grown on isolated and cleaned gneiss fragments (6.3 mm > à> 2 mm) from 90 cm soil depth. The substrate was the only source of Ca, K and Mg. Ectomycorrhizal seedlings showed no signs of nutrient deficiencies and biomass increased significantly compared to initial seedling biomass. Ectomycorrhizal seedlings seemed well adapted to survive on the coarse-soil substrate and acquired Ca, K and Mg from the coarse-soil substrate. Gneiss fragments of the ectomycorrhizal treatment were covered by fine roots and ectomycorrhizal hyphae, as observed microscopically. Fungicide-treated seedlingsâ root development was retarded, and shoot biomass only increased from stored nutrient reserves of the seedlings. The suppression of EcM colonization by the fungicide Topasî apparently caused a root growth inhibiting effect. Furthermore, the extinction of mycorrhiza initiated an increased nitrification and acidification and a consequent nutrient cation release triggered by nitrate in the drainage."
A Google Scholar search with the keywords: penconazole and mycorrhizal fungi
Here is a link that might be useful: link for above
Susan, I meant to say I love the edging around your beds. I think it's the most attractive I've seen.
Incidentally I remember reading that the common reddish "lava rock" is actually a brick-like by-product of some industry--I just can't remember what. Steel, maybe. Not that it matters, but I always wondered how it was harvested or mined and where it came from. Not volcanoes, as it turned out.