22,795 Garden Web Discussions | Roses
Most "regular" fertilizers like Miracle Gro or any generic 10-10-10 pellets will add nitrogen and food for the rose. I go with about a 1/2 cup per well-established rose (don't feed new rose plantings), away from the base of the rose and under mulch or scratched into the soil, more if you have large or heavy feeding roses or highly porous/sandy soil (I think). You don't have to have anything specially formulated for roses, since roses can't read (smile), but you want to watch not overdosing the phosphorus in most garden soils. If I'm adding a standard fertilizer, I usually add a good handful or two of alfalfa hay (purchased from feed stores or pet stores in the small animal sections, if you only have a few roses). The alfalfa seems to add something extra in addition to the nitrogen that promotes healthy branching out. Special rose formulations of fertilizer usually have alfalfa already in them, but they're also a lot more expensive. None of the feeding is strictly speaking necessary if you have healthy soil and you're happy with the roses, but the food adds a little "zing" to the blooming. Just don't feed too often, as Diane mentioned, or you can get a lot of green growth at the expense of flowers. Once in the spring and maybe mid-summer if I feel like it is usually plenty for me. The liquid fertilizers like Ken mentions can be used more often, but at a weak dilution. Me, I'm too lazy for feeding that often as many roses as I have.
Cynthia
I know they're meant to be scented, but does anyone with knowledge of the old California roses think this could be Santa Rosa OR Burbank?? (Bit of a wild guess, but after all, it must be SOMETHING!) Are you in California, Emily, by any chance, or do you know where your SIL got her plant from? Is the deeper colour always there or does it develop only at certain times of year? And just another Q it might be as well to check - can you normally smell roses? Pardon my asking; it's just that it's not unusual for different people to not be able to detect certain rose scents (particularly teas, but others too) - and it might make our job a bit easier if this were a scented rose!
If and whenever you're able to post photos, clear pics of both mature leaf sets and new growth, canes, prickles, buds at different stages, stipules and a whole mature plant shot might all help get us there. I wonder whether those canes on the left are hoping to get to that fence and climb...
Comtesse :¬)
1st pic shows several stems starting to grow above the original shot of this rose. 2nd pic (I hope) shows new growth and old growth. 3rd pic shows 2 stages of opening and one old bloom. I did pay close attention to the fragrance and yes, there is a slight fragrance. Hope this helps, I do appreciate your in-depth remarks, this forum is wonderful! By the way, I am located in North Florida, zone 8.
In my cold zone I can manage most roses on an average of somewhere between 18" and 2' apart, particularly the HTs and floribundas, except for obvious ones that want to grow big or sprawl. Tradescant wants to be 2' tall and 8' wide in my zone, but in my world he's asking to weave around other roses, since he doesn't fill in that space closely enough to warrant that much real estate for himself. On the other had, hybrid musks like Heavenly Pink or sprawling heavy blooming shrubs like David Barber do need their own real estate or they'd choke out something else nearby unless it's equally thuggy. Heavenly Pink shares cane space with Petite de Terre de Franches and Gartendirektor Otto Linne, but they have 2-3 feet between the bases and the canes only intermingle when they're healthy and toward the end of the summer. I figure since virtually everything in my yard has been pruned to the ground again this year after the winter, I have a lot of growing time before even the roses at 18" apart get close to approaching each other. There is good air circulation for most of the year, and by the time mine are big, the summers are usually dry and I can get away with more crowding than I might otherwise. If they get too floppy at any point in the year, I'll contain them with a 6' circle of green wire fencing or drape them over a shepherd's hook, but that has only happened maybe 2 out of the last 10 years. And yes, there are also rose companions planted around most of the roses, but they're pretty tough plants in my zone and tend to be low growers that don't interfere much with the rose canes at the bloom level.
Cynthia
Reviews for Burlington Roses. You'll have to email Burling to request a catalog. I hope shipping to NY is not too bad for you noviceatgardening.
http://forums2.gardenweb.com/discussions/1706564/burlington-rose-nursery-california
kingcobbtx9b, please comment on my statement/suggestion that: "Look to see if you have mycorrhizal fungi attached to your roots. If so, fine, work on other aspects of rose gardening. If they are not there investigate why as their presence will benefit your roses.".
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Marlorena-z8 England- stated: " ...when you consider the millions of roses planted all down the centuries without it... and all over the world... yet all of a sudden, this is a must have...."
H.Kuska comment: Yes, and those growers were using what we now call "organic methods". i.e. for centuries rose growers did not use synthetic fungicides and synthetic fertilizers. One of my favorite comments is that many rose growers now are attempting to grow roses in what I describe as soil that resembles a chemical dump.
Tebuconazole appears to be the "IN" fungicide for many of the chemically orientated rose growers. Yet, tebuconazole is a known potent inhibitor of strigolactone biosynthesis https://www.jstage.jst.go.jp/article/jpestics/38/3/38_D13-011/_html
For further information about strigolactone biosynthesis see: http://www.sciencedirect.com/science/article/pii/S1369526614000867
"Strigolactones (SLs) are plant hormones that regulate shoot branching as well as known as root-derived signals for parasitic and symbiotic interactions."
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Yes I agree with that completely. My comment about Placebo effect was merely meaning that most established gardens should have their own already unless of course there is an issue. If you don't have it naturally adding it without correcting the issue isn't going to do you any good.
In climates where roses carry leaves through the winter, there will be some natural shedding of senile leaves in spring. Usually when a leaf turns uniform bright yellow, or yellow mottled green, it's just because the rose has decided to kill it off. Crowded or heavily shaded leaves may be dropped in summer. I doubt you can have blackspot without black spots.
annofpa: I kept my tree roses in about 15 gallon insulated pots. I start my regular potted roses depending on their size in black nursery pots or whatever is available lol. If they are grafted plants I put them in 7.5 gallon size then pot up from there as needed. Ideally, I try to get the roses potted on into large insulated pots to prevent the roots from getting too hot here. I have a hand truck that I use to move pots. Its the best thing I ever bought dh so I could steal it and use it for plants lol :D
~sjn
I also picked up CI in one of my body bag orgies. I also just bought a Mr. Lincoln as a replacement for one that died, it's my husband's favorite. So far all of my bagged roses are doing fine. Even the JFK one I bought that was in rough shape. I think getting them watered and potted right away is a key. I've even soaked them in the bag and left them like that for a bit.
Watering every 3 - 4 days may have washed out most of that fertilizer by now. You could do fish emulsion at half-strength once a week. Osmocote works well in pots too.
BUT: have they bloomed yet? If not, then water is sufficient enough for now (they are happily growing roots, and they need roots before blooms), fertilize after the first bloom cycle.
I alternate between stuff like fish fertilizer and compost teas and stuff like MG and MG bloom boosters etc. I have tons of brugmansia which are very heavy feeders and will eat up anything I can throw at them. I do not mix up separate batches so whatever I am feeding them, I just do the same for all the other stuff too. I have potted roses that get quite a bit of fertilizer and I have not had any problems. I use plastic pots not clay and they get watered several times between fertilizer applications. Also, make sure to never fertilize a dry pot. Always water about a half hour before you fertilize. I killed a rose many years ago by putting fertilizer on a very dry rose lol. Completely fried it!! Never forgot that lesson.
~sjn
thanks to all who took the time to help me. havent seen anymore canes on the ground so I'm beginning to think it was the wind. Yall are sooo smart.
The brown is probably from being below grade, where stem bark gives way to root bark.