R U a gulper or a sipper?
10 years ago
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?Dry-grown teas in Mediterranean climates??
Comments (21)Wow!! Thank you all for your contribution. Most of you noted the aridity of Pomona/inland soCal in comparison to other Medit areas, point well taken. And soil type must be important as well, I agree Kim that a slope with sandy soil in our climate will not grow tea roses unirrigated!!! Point of clarification RE Trevor Nottle's conditions and Adelaide/Pomona rainfall: Adelaide 21 inches (wikipedia) Pomona 17 (wrcc for pomona fairplex), not much difference in my opinion, but Adelaide's average temperatures are lower too. Trevor Nottle found chinese roses (dont know if Teas or Chinas) growing in abandoned dry gardens in a couple spots around Los Angeles (personal correspondence, not in his book). Rosefolly thanks for the point RE dormancy I did expect the roses to "shut down" in summer and defoliate. When combined with other plants that are dormant it wouldnt seem odd, in my opinion. Thanks Melissa in Piacenza, Jackie and Rosefolly for your detailed rose information. Melissa I love the descriptions of your garden that you post (no I havent been a lurker!!!) I can tell that it must fit into the countryside. I havent checked whether youve posted pictures (??) if you havent you should!!! My opinion based on people's input here, and comparison with Trevor Nottle's input is that probably Tea roses would do ok in an average rainfall year in Pomona, provided they have been established for at least a couple years, are in retentive soil and protected from sunscald (sunscald issue based on previous post with Roseseek). They also should be grown well away from large trees, based on my own (small) experience with roses. Thanks! Nate...See MorePrice of gas in your area?
Comments (103)It surprisingly went down near us the past day or two. But we all know how the "supply/demand" affects prices. If we "demand" less, the price will go down... Though I'm NOT by any means trying to down play the crisis it puts many of us in when these prices get so out of control, it IS all good for the environent... It's my hope that this is a condition/habit that we all try to maintain in good times, as well as bad. We should NEVER, for the good of us all, ever be this dependent on foreign supplies (oil)....See MoreSipping coffee question
Comments (25)I'm just wondering how people can take a mug of coffee and wait 1/2 hr, an hour or more. In this state (home of the KaffeeFest, it'd be so cold you couldn't drink it! (Even on a hot day!) Although I guess there is an advantage where people keep telling me to go... the coffee should stay piping hot! Thus another advantage of the vacuum bottle. If it sits for a while and gets cold, I just pour it back into the thermos and fill the cup again. It mixes and is hot again. Assuming you drink it within a reasonable time frame of course....See MoreOrganic roses in South Africa and thoughts about life and health
Comments (30)I found this article about roses and drought: http://paulzimmermanroses.com/care/summer-care/should-you-water-your-roses-during-a-drought/ The roses in my personal garden haven’t been watered in over a decade. And that includes during a drought. but then I read this in our rose breeder's newsletter: http://www.ludwigsroses.co.za/newsletter/ The way trees drink Scientists who study forests say they’ve discovered something disturbing about the way prolonged drought affects trees. It has to do with the way trees drink. They don’t do it the way we do — they suck water up from the ground all the way to their leaves, through a bundle of channels in a part of the trunk called the xylem. The bundles are like blood vessels. When drought dries out the soil, a tree has to suck harder. And that can actually be dangerous, because sucking harder increases the risk of drawing air bubbles into the tree’s plumbing. Plant scientist Brendan Choat explains: “As drought stress increases, you have more and more gas accumulating in the plumbing system, until they can’t get any water up into the leaves. This is really bad news for the plant because this is like having an embolism in a human blood vessel.” Like a human embolism, the gas bubbles stop the flow of fluid. If that persists, it means thirst, starvation and eventually death. Choat is from the University of Western Sydney in Australia, a region that has seen years of record-breaking drought. He wondered: How much drought does it take before trees start choking on air bubbles? He and a team of researchers studied 226 species of trees around the world, including desert trees, rain forest trees and many others. They discovered that for most, it doesn’t take much drought at all. “So this is the key thing,” Choat says, “that it would only take a small shift in terms of the moisture environment, the temperature … to push these plants across the threshold.” The threshold between drinking and choking, that is. The reason there’s so little margin of error is that trees have to finely balance eating and drinking. To eat, they open holes in their leaves, called stomata, to absorb carbon dioxide. But the more they do that, the more they lose water by transpiration through the stomata. Lose too much, and they have to start sucking harder — and risk a deadly embolism. Choat’s research, in the journal Nature, shows that it doesn’t take much drought before trees start to self-destruct. But what about trees that have evolved to live in really hot, dry places? They’re sippers, not gulpers. Plant scientists like Bettina Engelbrecht figured they’d have a larger margin of safety before they choke. “Instead,” she says of Choat’s research, “we find, well, it’s all the same — everyone is right at the edge and has a very risky strategy.” Engelbrecht, at the University of Bayreuth in Germany, studies rain forest trees. “Now, we have to worry about all of them,” she says. “We have to really deal with the problem at the global scale.” That’s because temperatures are rising around the globe. That makes drought more likely and more intense. Big droughts have hit southern Europe, Russia, Australia and the U.S. in recent years. The first 10 months of 2012 were the warmest ever in the continental U.S. Along with the heat came widespread drought, which still persists in the Southwest. Nathan McDowell, a plant scientist at the government’s Los Alamos National Laboratory in New Mexico, actually puts trees under plastic to see how they deal with less water and more heat. He says trees are adaptable, up to a point. “Now we’re changing that climate range really fast,” he notes, “faster than any of the living plants here have experienced. So can they change fast enough to adapt to that? You know, the preponderance of evidence right now is saying that [at] lots of locations around the world, they’re not adapting fast enough.” When they don’t adapt, they stop growing. Beetles and other insects invade. If droughts last long enough, the forests just die, and get replaced with something else. Please help me to understand this Straw.... What I've noticed in the past with severe droughts myself is that once a plant has reached it's threshold no amount of water can make it grow and live again...and if it does, it is usually riddled with all kinds of fungal (and other) diseases and bad insects. How can not watering your roses during a drought be a good thing, as stated in the site on the top?...See More- 10 years ago
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