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#16
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powdery mildew
On Thu, 6 May 2004 15:15:59 -0500, "RoyDMercer"
opined: "Victor Martinez" wrote in message ... RoyDMercer wrote: them each year. However if you let them go they will eventually stop blooming. The state of Oklahoma planted hundres of Crape Myrtles all along the southern section of I-35. They are never pruned and they have stopped blooming almost completely. That's funny. My neighbor's crape mirtles have never been pruned (they're over 25 ft tall) and they bloom beautifully each year. There are literally hundreds of cultivars of Crepes and not all of them behave the same. My mom has one so tall it's as high as the power lines and it blooms each year (without pruning) also. Crepes which are that large are really more of a tree and tend to behave a bit differently than the lower habit shrubs which are more typical. I beg to differ. There are only a handful of dwarf varieties and not one of them requires the treatment of heavy pruning. A tree or shrub which flowers on new growth does so naturally. When you cut a crape to an inch of its life, sure it's going to bloom excessively. It is trying to make seeds to continue its own survival in nature. It's sort of like the false economy. We are being told how it's growing at the fastest rate, when really it's only starting to recover, masked at recovery. Anyone with a portfolio knows what I'm talking about. Political statement aside (Anybody But Bush), pruning crape myrtles is absolutely not necessary for the plant to bloom. |
#17
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powdery mildew
"Babberney" wrote in message ... On Mon, 03 May 2004 13:56:57 GMT, "Chris" wrote: My front crepe myrtle has a very bad case of powdery mildew. It had it last year, too, and never flowered. How do I stop this cycle? Someone posted something about using a milk solution. Does this work? I bought some really nasty stuff last year that required me to wear protective clothing and a ventilator when I applied it. Supposedly it killed everything. It didn't appear to work and, given that almost everything else I use is environmentally-reasonable, I'd rather not use that again. Any suggestions? Thanks. Chris Well, I disagree with almost everything Roy has said about pruning crapes. I never prune mine ( full grown when I moved in 10 years ago, probably 40 years old or more total) except to remove root sprouts, the occasional dead branch, and low limbs that hit the house or poke my eye. They are close to 25' tall (i.e., they ain't getting much taller) and they always bloom well. Topping is a brutal practice--not "murder" perhaps, but it will drastically shorten the life of the plant. When you remove all the plant's energy reserves every year, you deplete stored starches and sugars to the point they can no longer afford to make flowers--they're just struggling to survive. Thin out the cluster of sprouts that grow this year, but leave 2 or 3 strong whips on each stub, and let them develop into branches over time. Don't top anymore and leave the poor things alone and they'll recover eventually. Yes, I know some people top annually and still get lots of blooms. The great irony is that these amazingly tough plants manage to survive the worst we dish out and then we use it as an excuse to continue bad practices. Now, if you want to cut down to the ground periodically and create a big bushy cluster of sprouts, more power to you, but IMO the best thing about crapes is the intricate branch structure and the smooth trunks with flaking bark. The whips that come off the ground take years to reach a point where you can enjoy these features. As for fertilizer, most Austin soil has too much P and K already, and our creeks are suffering from the runoff of excessive fertilizer applied by overzealous homeowners. The bigger problem is our high pH (we're sitting on a big chunk of limestone, basically). Iron. magnesium, calcium, etc. can bind with each other/other soil components, making these micronutrients unavailable to the plant. A sprinkling of epsom salt can add a bit of Mg to the soil and improve blooming. Still, I would not recommend any fertilizer unless/until you get a quality soil test that shows some deficiency, and then only with a fertilizer designed to address only that deficiency. Don't use the A&M soil tests--they use HCl to test in an assembly-line method, and the results are skewed because of that (in effect, the acid negates the problems caused by the high pH and your test will show elements that are in the soil but not available to the plants). Good luck, Keith Babberney ISA Certified Arborist Keith, Just so you know I did not advise anyone to "top" their crape myrtle, other than to say it is possible to cut them off almost to the ground and they will come back eventually. The single most common reason why crape myrtles stop blooming is they are overgrown and neglected. Most flowering shrubs (crape myrtles included) only bloom on new growth. The same can be said for Rhododendron, roses, and most other flowering shrubs. You can have the perfect soil for a plant, but if there is no new growth, there won't be blooms. When I prune mine, I clear out excessive and dead growth on the inside of the plant and retain the natural form of the plant when pruning on the outside. |
#18
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powdery mildew
I grow a Crape for bonsai plus maybe a dozen in other larger pots.
Crapes not only bloom on new wood, they send out new branches, stop growing, then send out branches on those branches and then bloom on those new (2nd) branches! Take what Roy said to heart.... John "RoyDMercer" wrote in message ... Keith, Just so you know I did not advise anyone to "top" their crape myrtle, other than to say it is possible to cut them off almost to the ground and they will come back eventually. The single most common reason why crape myrtles stop blooming is they are overgrown and neglected. Most flowering shrubs (crape myrtles included) only bloom on new growth. The same can be said for Rhododendron, roses, and most other flowering shrubs. You can have the perfect soil for a plant, but if there is no new growth, there won't be blooms. When I prune mine, I clear out excessive and dead growth on the inside of the plant and retain the natural form of the plant when pruning on the outside. |
#19
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powdery mildew
RoyDMercer wrote:
stop blooming is they are overgrown and neglected. Most flowering shrubs (crape myrtles included) only bloom on new growth. The same can be said for That's a broad generalization, and like most broad generalizations, it's incorrect. blooms. When I prune mine, I clear out excessive and dead growth on the inside of the plant and retain the natural form of the plant when pruning on the outside. Dumb question. Wouldn't the "natural form" of a plant be that which is achieved naturally, without pruning? -- Victor Martinez Send your spam he Email me he |
#20
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powdery mildew
"escapee" wrote in message
... On Wed, 5 May 2004 08:01:27 -0500, "RoyDMercer" opined: I should have said 1 teaspoon per quart of water. 4 tablespoons per gallon seems excessive to me. If you are using that much, you could start to affect the PH of the soil, which is not a good thing unless your soil is very acidic to begin with. Crape Myrtles will bloom very well as you say if you are lightly pruning them each year. However if you let them go they will eventually stop blooming. The state of Oklahoma planted hundres of Crape Myrtles all along the southern section of I-35. They are never pruned and they have stopped blooming almost completely. They are not blooming because I highly doubt the state fertilizes it's highways. That is why they are not blooming. Not because they are not pruned. When they were first planted, they bloomed profusely for several years which negates your theory. Only after a few years when they reached their maximum height and width did they stop blooming. When I say stop, I don't mean they stopped altogether because they still produce very small and sparse blooms, but this is not what I would call blooming for a crape myrtle. I see the same situation happening in commercial settings where they don't prune them but do fertilize. |
#21
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powdery mildew
"escapee" wrote in message
... On Thu, 6 May 2004 15:15:59 -0500, "RoyDMercer" opined: I beg to differ. There are only a handful of dwarf varieties and not one of them requires the treatment of heavy pruning. A tree or shrub which flowers on new growth does so naturally. When you cut a crape to an inch of its life, sure it's going to bloom excessively. It is trying to make seeds to continue its own survival in nature. It's sort of like the false economy. We are being told how it's growing at the fastest rate, when really it's only starting to recover, masked at recovery. Anyone with a portfolio knows what I'm talking about. Political statement aside (Anybody But Bush), pruning crape myrtles is absolutely not necessary for the plant to bloom. I didn't mention dwarf varieties in particular. There's hundreds of cultivars of crape myrtles including many more than a handful of dwarfs. There's also tall, medium, and minis. Each year new cultivars are produced. Commercial growers run under the same scenario for just about all plants. The patent on new cultivars runs out after a few years and growers lose exclusive rights to them. So they produce new cultivars each year. You may be referring to species. There are only 3 species under the genus, but there are hundreds of varieties, hybrids, or cultivars whatever you want to call them. I think it's very poor advice to tell someone pruning all crape myrtles is absolutely not necessary to get them to bloom well. Certainly they will bloom some if left alone, but most people are going to want them to bloom profusely. I wouldn't advocate heavy pruning unless one had been neglected for several years. Light pruning is all that's necessary if done on a yearly basis. You can also deadhead old blooms to get them to bloom more throughout the blooming season. The very article you quoted in this very thread says pruning of crape myrtles is "required". I'll repost the link in case you wish to read it again: http://www.plantdelights.com/Tony/crape.html |
#22
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powdery mildew
"Victor Martinez" wrote in message
... RoyDMercer wrote: That's a broad generalization, and like most broad generalizations, it's incorrect. The statement above is quite funny because it's a broad generalization. Does that mean it's incorrect? Dumb question. Wouldn't the "natural form" of a plant be that which is achieved naturally, without pruning? The key word you missed is "form". |
#23
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powdery mildew
RoyDMercer wrote:
The statement above is quite funny because it's a broad generalization. Does that mean it's incorrect? You seemed to have a problem reading. You said "all flowering bushes...", I said "most..." You see the difference? The key word you missed is "form". Hmmm... I don't get what you're trying to say. Would you please elaborate? -- Victor Martinez Send your spam he Email me he |
#24
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powdery mildew
"Victor Martinez" wrote in message
... RoyDMercer wrote: The statement above is quite funny because it's a broad generalization. Does that mean it's incorrect? You seemed to have a problem reading. You said "all flowering bushes...", I said "most..." You see the difference? No sir, I don't see the difference. Actually I said, "Most flowering shrubs" (cut and pasted from my original message). It would seem that you, sir, have the reading problem. The key word you missed is "form". Hmmm... I don't get what you're trying to say. Would you please elaborate? Certainly. Form (fôrm) n. 1. a. The shape and structure of an object. .... 2. a. The essence of something. .... So if you take Mr. Webster's definition of 'form' and then consider the phrase "natural form", you should see "natural form", as I used it, would mean the essence and shape of nature and not necessarily the exactness of nature as you inferred. |
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