A great new article about “New Heucheras”
KW PNW Z8
2 months ago
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KW PNW Z8
2 months agoRelated Discussions
new 5-9-2013 rose rosette article - Hudson Valley New York
Comments (5)The following comment was made: "And we don't know of any immune response to RRV except maybe in certain species, do we?" -------------------------------------- I would definitely expect an immune response to mite attack. I also would expect an immune response (from very weak to complete immunity) to rose rosette virus which would vary in effectiveness depending on which variety, possibly temperature, possibly general health of the plant, possibly time in growing season, and other still unknown factors. We do know of three examples of unexpected behavior. One is that graft transfers of the virus in multiflora are not successful after a certain date. A second is for one species of rose the virus can go down one cane but does not go up other canes. A third is that 20% or in some cases more of infected roses appear to cure themselve (go into remission) but then the disease returns (have a relapse). "Q: Is the virus present in non-symptomatic tissue [on plants known to have been symptomatic]? It can be. We have seen about 20 percent of newly symptomatic roses, lose all trace of symptoms. However, the symptoms always return and usually cover most of the plant. The plant then usually dies a few months later." http://www.rosebreeders.org/forum/read.php?2,50305,50308#msg-50308 If the hydrogen peroxide treatment does work, it would be expected to word by enhancing the immune response. The 2012 review article for which I have included the quote below may be of interest. "Plants, however, lack specialized mobile immune cells. Instead, every plant cell is thought to be capable of launching an effective immune response. So how do plants achieve specific, self-tolerant immunity and establish immune memory? Recent developments point towards a multilayered plant innate immune system comprised of self-surveillance, systemic signalling and chromosomal changes that together establish effective immunity." Here is a link that might be useful: link for plant immune system 2012 review This post was edited by henry_kuska on Fri, May 10, 13 at 21:42...See Morequestion about new heuchera's i just got
Comments (4)I can relate to your feeling protective over the newbies. I've read that heuchera need to dormancy to bloom their best, but I understand that you just want them to survive the winter. If you do overwinter like a house plant, be sure the humidity in your home isn't too dry. As a suggestion, how do you feel about experimenting a couple of different ways? Maybe grow one like a houseplant, one in the unheated garage and one outside. The one outside would be protected against the house with leaves around the pot for insulation. If you site it under an overhang that would help protect it from excess rain/show etc. Or tip the pot after it freezes, like some do hosta in pots outside... Anyhoo, good luck with your new babies. They will probably surprise you by how well they'll do overwinter. :-) Deb...See MoreNews article about the bees
Comments (1)At least it's encouraging that they are working diligently on the problem - whatever it turns out to be....See MoreNew to Heuchera's just planted a new batch
Comments (6)I would cut off the dead leaves. Good choices from my favorite online nursery for heucheras! Great job in preparing your bed and you've got a really great start. Please post some pictures when you (and your new additions) are ready:) Among the ones you ordered, I have Georgia Peach, Sweet Tea, Cajun Fire, and Berry Smoothie. They are in general very good and robust growers (not sure about Autumn leaves). They may get some sunburn during the first season if they are exposed to too much sun, particularly you are in a much warmer zone than my zone 5a. If you can, try to put sweet tea, southern comfort and autumn leaves under the dappled light. Canjun Fire and Georgia Peach tolerate sun the best. Similar to hostas, morning sun is more friendly than the afternoon suns. I agree with Sherry. Heucheras don't need much attention. Just give them some water during the first few weeks, then on hot and dry days, they should be fine....See MoreKW PNW Z8
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