21,401 Garden Web Discussions | Roses

I have an own-root Nahema here in humid Sydney. Its parent plant was a sickly, rusty, black spotty specimen but the cutting I took from it is healthy and keen to take over the back fence. But I must admit it hasn't flowered a lot. I just put that down to its youth.

Thank you all for your replies. I am very pleased to hear they are healthy plants. I do have good soil here somewhat acidic, but not to much so maybe they would do good for me here.
I think I will cross off Louie amade. I wasn't to keen on him to begin with.
Grace e

I was thinking thrips, so you should check and make sure that you see thrips (with that paper test) before you use any spinosad. I hadn't thought of botrytis with your pic, but it's not a great pic, lol. Botrytis will keep buds from opening, yeah, and no insecticide will help that.

What MichaelG said -- looks like botrytis to me, a fungus we get with damp weather. Also could be thrips.
Sunny, dry weather should take care of the botrytis, if you can wait.
I just smash aphids with gloved fingers when I see them. A soapy spray can help too, but In my experience, regular insecticides cause more problems than they cure.
Here is a link that might be useful: Photos of Rose Pests and Diseases

Have it for only 2 months so I really don't know for sure about blackspot. But so far even with all the rain and humid weather, nothing has shown up yet, no blackspot and no powdery mildew. and I have it in partial shade. The flowers are just awesome, beautiful form and shade of red and as cut flowers, they last longer than all the other roses.. They look just like florist quality roses even with no spraying.

Michael,
Grand Amore is one of the few HT's with an ADR certification. Eliza and La Perla are two other recent ones.
Grand Amore is very resistant to BS, but this said, I did see a small infection near the end of last season whereas Eliza and La Perla have never been infected in my garden.
All this said, I've grown a lot of the red HT's and Grand Amore has by the best disease resistant of the lot. I used to consider Royal William as the best prior to this.


My David Austin "Heritage" has been hit by RRD. I noticed the odd cane a few weeks ago and cut it off. Another one cropped up and I removed it also. I have one good cane that is blooming currently. I hate to dig up the plant if I don't have to. I have other roses to the west (across the driveway) and Knockouts in the back of the house (which RRD won't discriminate against. Opinions please?

Has there been any herbicide use (either a round-up type or a weed and feed type) since last summer? If so you could try and see if there is a "third strike" (I would spray the plant with Wilt-Pruff as a precaution to try to prevent further spread of the mites. If there was no chance of herbicide damage, I suggest that you utilize the 2 strikes and your out "rule" i.e. remove it now.



Oh, poor prairielaura! I've only had chiggers about twice.
The mosquitoes are eating me alive daily, thankyouverymuch. I really need to put on a spray!
I have seen a world of dragonflies this year, so that's nice. They are wonderful to see everywhere in a garden even if the mosquitoes are still a total PITA ;)
I'm one of those people who gets bitten in the middle of winter, so c'est la vie and all :) They could use my blood as a lure. Maybe the dragonflies will end that one day *crosses fingers*


Woot! Happy 4th!! I'm drinking wine and posting to the forums :D And I'm having a lovely time doing so.
I hope everyone has a great celebration. I love the US and all our crazy snakes and bugs and armadillos, etc. Enjoy your gardens, folks :) I'm going to enjoy a BBQ this weekend if it's not too hot or rainy.
No heatwave really, but it's not exactly cool. Ah, summer ;) It could be much worse!
This post was edited by meredith_e on Thu, Jul 4, 13 at 23:08

Well, thanks to the tropics, we're going through a flood atm. Ugh..... They say it's going to be this way for a week too :( Black Spot wasn't bad, but now I am really afraid it's going to go crazy and no point in spraying until this mess clears up.
Hopefully Heirloom will hold the shipment until the Gulf decides to cooperate.

I had Living Easy in subtropical zn 9. It was a good bloomer & a healthy plant (no spray garden).
Have Hot Cocoa here in desert zone 8. A grafted big box store plant. It did poorly until I dug it up & replanted it deeply, burying the graft. It's been blooming like crazy since & is quite healthy. The color (like it or not) IS very distinctlive.
In a city rose garden in my old hot humid zone Hot Cocoa also did very well in full blazing sun. Don't know if they disease-sprayed.
I personally don't get too upset with roses black spotting some in the spring. But according to my recollection, both Living Easy & Hot Cocoa were pretty healthy in that old humid coastal zone that might be similar to yours.


Is there a public rose garden in your area? If there is (and if it is not sprayed) that would be the ideal place for you to learn what rose varieties are remaining clean, in our changing climate.
You might also want to contact a local ARS Rose Society. There's a very very good society which meets in Carlsbad. They should be able to give you very location-specific suggestions. The Society is California Coastal R.S. -- They're the nicest folks in the world, just about.
Tell them that Jeri Jennings suggested you contact them. I really like those folks. :-)
Jeri
Here is a link that might be useful: California Coastal Rose Society

Goodt4me - you can visit the websites for the various rose societies, too. We each have lists or suggestions for roses recommended for this low desert climate. www.roses4az-mevrs.org, www.phoenixrose.org, www.glenroseaz.org. Of course, you can also email me through this website, too:).
A chain link fence is made from galvanized metal and is usually much cooler than a block wall. It also is almost impervious to keeping weed-free but allows excellent airflow. If you're in a newer area of Scottsdale, you may have a solid metal fence of some nature and even a cactus would fry on one of those things. Rose's biggest enemies in this area, besides afternoon-only sun, is lack of water and encroaching roots... especially oleander, eucalyptus, nutsedge, cats claw and hybrid bermuda grass.

My HT's have been pumping out big candelabra's this season also. No complaints on my part. These are what I build my bushs on. I watch as it developes and pay attention to the lower 3/4 canes. As those lower canes start to develope, I cut out the top of the candelabra and let all the energy go to those lower canes. They always produce beautiful blooms and I usually cut half of that cane and let another one or two big canes come of of each one. I call it, building my bush strong. As far as why they show up, I like to call it "happy bushs"

Thanks desertgarden. Today was a bit less severe sun-wise, so the leucophyllum photographed better. This is with nothing other than hose water and the "finally useful cat" planted under it. All kidding aside, the cat is buried under this plant. It will continue flowering like this as long as the temps remain high and it receives SOME water. It's a Texas native, so you know it MUST be tough. Kim




Here is Oklahoma, sitting on the edge of a gravel driveway that gets all day sun, apparently happy as a clam in spite of the 100+ weather we've had here for over a week. That big cluster of flowers in front is a new cane that must have had a dozen flowers at the tip! It's not as red as it usually is, it's a lot more pink, but it's still beautiful!




Rose roots don't really go all that deep, although they can grow widely. If your roses are grafted, which they probably are, you're going to get the rootstock, if you get anything. Dig a pretty big hole in the new spot, water it, then go and cut down most of the rose you want to transplant. When it's rather small, dig it up - you'll probably have to cut some roots or they'll break or tear or you'll cut them with your shovel, but don't worry about it. Cart the rose to the new hole. put the dirt in, and water it like crazy for a couple weeks.
People say to take a lot of dirt with you, but I've found that nearly impossible. I've moved a lot of roses and they usually end up almost bare-root once I yank them out. Used to bother me but now I know they'll grow back just fine.
Or do as suggested and just kill them and get some that you like more.
And if you're putting 2 feet of dirt over the old roots for your raised bed, I don't think you'll have any problem. If you do, just yank out the new growth if any appears. It's going to be parts of the roots and shouldn't be too hard. It won't affect your vegetables at all. Roses are related to apple trees and apples don't affect vegetables either.
If you have access to the plant with a truck, you can pull it out with a chain! I had to remove a plant that way once!
NEVER use any brush killer and then plant a vegetables.
You may not get anything to grow there for a year!