22,795 Garden Web Discussions | Roses
Both photos look like fungal disease problems and as others have posted-- choose disease resistant with excellent disease resistant qualities roses.
Many of the 'Earth Kind' roses are under that category as well as many newer varieties of Kordes roses and of course any of the hybrid roses created by Radler (Knock Outs and anything with baseball terms in them (Home Run)
Many of the Earth Kind and Knock Out roses are landscape shrub roses and not really specimen roses like say hybrid teas.
In the PNW you could have any of 5 or so fungal diseases, but these will tend to subside during the dry summers. I agree with campanula that it looks more like cercospora than blackspot, which is the more serious disease. Unlike blackspot, these sports have clear, firm margins. You can probably ignore it.
I figured we'd have lots of company across the country with balling (aka botrytis petal blight - thanks Michael). We finally had a dry week and the buds with fried edges have opened relatively cleanly after that week. I hadn't thought of the wet being a reason for the shattering, Harry, but you're entirely right - they've lasted maybe a day if that.
Unfortunately with all the rain and weak young canes from being pruned to the ground, all the longer canes are lying on the ground. I tried to move a few to upright but they snapped right off at the base, and I'm not risking those with only one or two canes. Too many times that has been the death of the rose, equivalent I guess to ripping off the rootstock at the base to kill it. I'm sort of hoping this will be a form of "pegging" so those canes lying on the ground sprout up laterals, but I've found most of my HTs and floris are reluctant to do this.
Ah well, I'll prune them back when they're done blooming and we'll move on from there.
Cynthia
Since you are in Australia availability is different, but you might be able to find 'Renae', which is pink, thornless (or at least 99% thornless), and fragrant. It also reblooms well.
Here is a link that might be useful: Renae @ helpmefind
NoAcceptance,
Drought the season earlier decreases Japanese Beetle grubs. I think it is harder for them to bore into the ground, and for the eggs to hatch without moisture.
I am speculating that a 4' deep frost line helps keep them down, too. We shall see. But prior to two years ago when they were so numerous here, I would usually get multiple grubs in each shovel full I would dig in the garden. And I have seen only 1 or 2 beetle grubs, and that was in May.
It's normal for so many roses, I wouldn't worry about it. Small own-root hybrid teas are usually going to be slow. Just keep staking until they can stand up. I have Pink Enchantment (Souv. de Baden-Baden) in 2nd year from 1-gallon. All canes were lost over winter, so it's still kind of pitiful. I removed the flower buds from the first flush and will stake as needed.
I would suggest that you keep nitrogen fertilizer at a low level so as not to encourage plant growth. On an own root young plant pinch back the stems so as to encourage lower breaks which will help form a bushy shrub with strong canes. it often takes a year of growth to form a nicely balanced plant from a one gallon container.
Kentstar,
I finally remembered my camera today Kentstar but I was to late as they already ripped out around 14 Ko's that never came back to life at our local Catholic Church...I'm really surprised as I thought they were more winter hardy... Hummmm
I did take some pics anyhow to show winter damage on some of them that nobody pruned out yet.
Looks like this type of KO's did better with less winter damage:
I am in zone 7 ( a few years ago, they tried to convince us we were in zone 8, glad I didn't listen), but we went down to zero on two successive nights. I had luckily moved all my pots inside (some were already frozen solid by the time I got home from work, but they thawed out in the garage). But the in ground plants suffered. I lost about 5 roses, most of the others were dead to the graft, but have come back. My teas took the brunt of it. I had about 5 that were huge 8 ft x 8 ft or so, and had to be cut all the way back to the ground. All but one has come back.
The one bed where I lost 3 HTs, I also had some japanese cleyera that I had unfortunately trimmed back hard in August, and with the early October hard frost we had, they were damaged. I thought I was going to lose some of them, but they are now coming back. I do have to cut back some dead wood on them.
Like Ken, I am still finding dead wood or cutting back healthy looking canes that have brown pith. And many of my roses are small. But they will come back.
So, lessons learned, listen to the weather reports, bury all grafts below the soil and pile leaves around own roots. We don't get snow cover, so we have to make do.
Thanks Michaelg on the Carefree Sunshine response.
Our CS are coming back fairly faster in the last few days.
Yep they are picking up some steam now...
Last night we had some freakish temps that dropped into the 40's though.... Great night for sleeping and even had to cover up...lol
Siel , they look fantastic ! I especially like moonstone , may have to add that if it's a florabunda. I wanted to ask you , I believe you said you use sweet allysum in your pots . I sprinkled seeds and now they are blooming in my rose pots very well but I wonder if my growth had slowed down bc of the allysum ? Is that something you have noticed or am I just paranoid ? :)
Thanks, Lily! No I don't use allysum myself but I do know several people who do. I'll have to ask them if they notice any slow down. But if your roses have just bloomed that could be why they've slowed down too.
I do end up with petunias in some of the pots because they self seed everywhere. Some I let grow and they're pretty when the roses aren't blooming. It depends on the health of the rose in the pot though. Sometimes if I think the rose doesn't need the competition I'll yank them out.
My Molineux grow about 3-3.5 ft tall. One thing a bit different about Molineux (as opposed to Munstead Wood, for instance) is that Molineux is a more vertical plant; Munstead Wood is "rounder"--the sides fill out.
I've heard of Molineux growing about 4 ft (except in California --none of the rules apply there), but mine have never grown quite that tall. On the other hand, I don't believe anyone has ever called it a "compact" plant either.
It is a sun-lover. If you have it growing in part shade or closely crowded by other plants, it may try to grow taller as it reaches for the sun.
If you want to keep it somewhat shorter, I'd prune it after its spring bloom cycle is over.
One of my favorite Austins. Hope you enjoy yours.
Kate
Also see:
http://www.bbg.org/news/the_roses_are_in_bloom
Here is a link that might be useful: link for above