Disappointing Heuchera die-offs
linnea56 (zone 5b Chicago)
16 years ago
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remy_gw
16 years agochristinmk z5b eastern WA
16 years agoRelated Discussions
Genetic engineering responsible for bee die off
Comments (28)Drew, I emailed you directly about the HIV-related stuff in the interest of keeping the forum from going too off-topic (although I guess that happens all the time). In terms of the virology and not specific to HIV (thus relating to plant viruses) I did want to address a couple things. First, you are right that replication rates are fast. Viral generation times are on the order of hours to days (bacteria can be faster--20 min or so) but the number of viruses generated in each generation is millions (so very high rate). In fact viral load can be in hundreds of millions to tens of billions per infection. This effectively means that for some highly mutating RNA viruses (like HIV), every single nucleotide is mutated thousands if not millions of times over in each infected individual. So as you said the ability to evolve isn't an issue. This is also one of the reasons effective vaccines are difficult to develop. The reason why the process of a virus adapting to a non-pathogenic form takes such a long time is that the less virulent form must out-compete and displace the more virulent form. For most pathogens, there is an equilibrium between the ability to transmit between hosts and the level of disease caused. Too bad of a disease usually causes reduced transmission (like acute death or sterility doesn't allow the pathogen to propagate); however often the ability to transmit requires some of the pathology (for example coughing/sneezing/runny nose helps spread a disease). To displace a virulent pathogen, the less pathogenic form needs to render the host less susceptible to the more pathogenic form. For many viruses one subtype does not prevent subsequent infection with another subtype. The common cold is a great example of this. The virus is constantly changing and you can get infected hundreds of times over the course of your life. Another big issue is zoonotic infections where the virus infects multiple species. What is less virulent (or more adapted) in one host species can hop over to another and cause horrible disease (I'm thinking bird flu here but the bee/plant virus may be another good example). I really don't try to make convenient arguments for thing. If things I say are conflicting there is usually a reason but I appreciate having them pointed out as I don't want to come across as being biased. ryan...See Morea bit of a disappointment, really. (a rant - beware)
Comments (67)I do think this has been a fun discussion to read, and I'm glad that folks have been so gracious in encouraging each other to stick around and continue to express opinions as just that - our individual opinions to share and learn from each other. Melissa raised an excellent point in response to my post that I did indeed state more strongly than I intended. I also don't grow antiques or even roses because I deliberately want to be different from my neighbors in some sort of anti- "keeping up with the Jones" attitude. I am at heart a lazy gardener, which is one reason I refuse to spray, since that makes something fun into unpleasant work in my world. I like old garden rose forms but something that suckers like Gallicas sounds like too much work in a contained space so I look elsewhere. I also like modern rose forms and bright colors and stripes so I grow those too and don't bother to segregate the types except by vague color relationships and zone pocket requirements. Still, there's something special about roses that appeals to my own quest for knowledge and community and history and even individualism, with each rose having its own personality and story, both in my yard and in the rest of the world, that isn't equaled by other types of garden plants. Let me slip in an analogy for where I see some of the challenge and appeal of roses beyond just their beauty, since any number of garden plants are intrinsically beautiful. When I became engaged to my husband, he asked me what kind of wedding ring I'd like. Well, my first considerations were practical (as they are in my garden), and being a klutz, with all the ways I use my hands I didn't want to have gashes in my clothes (and skin) from a solitaire like a majority of rings out there. I also look wretched in gold jewelry, so I wanted white gold, and I like the intricacy of filigree jewelry just because it's pretty. We discovered that by these three practical and aesthetic considerations, we were already beyond 99% of the rings that we could find for sale not because I wanted deliberately to be different, but because what I liked wasn't what apparently most other folks liked. After searching all over two towns, we checked the teeny jewelry store next to my husband's store and wearily said the words that made most store owners shake their heads blankly, "white gold filigree". What a joy to watch the owner pull out a huge tray of estate sale rings in nothing but white gold filigree and tell us the stories behind them. Not just because I liked this style aesthetically, but there's something richer and more powerful about having a ring from the 1920's with an intriguing history behind it. I am very grateful to that jewelry store owner for maintaining and sharing those "weirdo" rings, since I didn't even know what I wanted would be hard to find until long after they were popular (just like my gratitude to folks who maintain hard-to-find roses). It adds something indefinable to the personal sentiment that I would treasure anyway in any wedding ring my husband would have chosen, to imagine who else has loved this ring and been loved through the gift of it. So that individualism and history and sense of community is part of what appeals to me about roses, beyond the fact that I think they're beautiful and surprisingly manageable plants to care for. I love that roses have families on many levels - that I can look at a Kordes rose and see aspects that differ from a Meilland rose, that children and grandchildren of roses like "Peace" or "Souvenir de la Malmaison" share important characteristics, or that rose breeders like Rupert or Barden can be people we actually know (at least virtually on this forum). And one more thing - the same can be said of daylilies, since they are every bit as diverse with a long history of some varieties, and I have probably 40 named varieties in my yard. For me, the difference is the challenge associated with them, hence my earlier response to Suzy's initial comments. I just don't find daylilies that challenging to grow, so they don't develop as much personality or uniqueness for me as the roses do in my yard. That sentiment and this whole post starts getting off on another tangent, and since this thread is getting long I'll start a new one on the idea of what appeals to us about roses. Still, I wanted to respond to Melissa's very thoughtful comments and respect the very welcome challenge of this discussion topic. Have a good time out in the garden Lola, and BlackGavotte, and welcome back whenever you want to chime in here. Cynthia...See MoreHeuchera blues
Comments (8)I think it is just a bad year for them. I bit the bullet and bought a larger than usual container of Miracle. It looks awful. All the veining is gone and it is just a beetle eaten solid light green plant. I'm thinking the color might be too much shade. Lots of luck with palace purple - bought at Marcs for $1.99 at the beginning of the year. My Citronelle is gorgeous! My older coral bells are all beautiful though not a ton of growth. here's a few of mine - they are definitely worth another try! cappucino and stargazer mercury tiarella citronelle and a noid hosta (anyone know what the hosta is?) crimson curls and patriot hosta and a long shot of a hosta bed with melting fire and harvest silver coral bells (new this year,small in the front)...See MoreMost disappointing perennial?
Comments (37)gdionelli, I haven't tried Zagreb. I'm trying Moonbeam one more time; I need a light pale yellow. People on GW have said that Zagreb is more hardy, but the color (At least as I've seen it in pictures) seems to be too bright or too orangey for this spot; which is a pink-lavender purple-magenta garden. If I'm wrong about the color, somebody tell me: I'm going from photos online. I may try the Zagreb next year if I can figure out a different location for it. I used to love the regular old-color Gaillardia: a favorite plant from my childhood. I tried one in this garden and couldn't make the color work. My Mom grew them for years and they were trouble-free. I wonder what the plant breeders did that made the newer colored versions trickier....See Moremaria
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