Root collar vs. root crown
jenn
12 years ago
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greenman28 NorCal 7b/8a
12 years agotimsf
12 years agoRelated Discussions
David Austin Roses - Own Root vs. Grafted
Comments (13)I think most discussions of "own root" vs. "grafted" may be nearly irrelevant, UNLESS one is speaking of specific varieties and specific rootstocks. Each rose variety is genetically unique, and so the root system it produces will be different from that of any other rose, and its behavior on a specific grafted rootstock may be different from that of any other rose. So it becomes dangerous to generalize too much. In reality, every rose is on a "rootstock," whether there is a graft present or not; in an own-root rose, that rootstock is simply that particular rose's root system, which is genetically unique. Of course it is true that most of Austin's roses are at least somewhat related to each other, but even there, there is enough variability that I think it becomes unreasonable to generalize too much. As for the rootstocks under grafted plants, there is a tendency for extreme vigor (Fortuniana) or moderate vigor (Dr. Huey or Manettii), or low vigor (odorata or canina), etc., and a tolerance of acid soils (multiflora) vs. alkaline (Dr. Huey). But those are tendencies. Each scion variety will behave somewhat differently on each of these stocks, and each scion variety will behave differently from other scions, on a given stock. On top of all of that, then, are soil and climate of a specific garden, both of which will affect behavior of a rose on the roots it is given. So I think it is legitimate to say "in Lakeland Florida, even on our sandy, nematode-infested soils, I prefer Austin's "Graham Thomas" and "Heritage" on 'Dr. Huey' over 'Fortuniana' (since they won't rebloom well) or own-root (since they won't survive long), but I prefer 'Souv. de la Malmaison' and its sports on 'Fortuniana' (a combination that gives excellent vigor, floriferousness, and longevity), but 'Tausendschoen' and 'Crepuscule' are excellent on their own roots," those statements may not be true of other varieties, nor of these same varieties in other gardens, in different climates, and with different soils. The bottom line, then, is Caveat Emptor. Yes, get others' opinions and experiences, but realize they may not match what happens in your garden with your set of varieties....See Moreroot mass???
Comments (4)Interesting observation, Ken. We often speak in terms of 'mature' divisions when, in fact, you can have less than mature hosta divisions. That particular June that you referenced is what I'd call a teenaged-young adult divide...about a growing season shy of being mature. I've divided a lot of hosta but most all of 'em have been common ones like albomarginata or 'the green one' and have not paid any attention to the size of the divide in relation to the next year's performance. Or Halcyon which is slowern' molasses so there's never much to see! (Of course, Halcyon will take a lot of abuse and mine have been mostly ignored...) However, I did purchase a Touch of Class 'mature' division this summer. In reality, it wasn't quite that. Had an offset that I divided off and planted separately in a pot to baby along. The larger division was planted in the ground early this summer; the smaller one I kept in a pot to baby along and just planted it yesterday. I'm keen to see what it will look like Next year. TOC, being in the Halcyon family, hopefully isn't so slow as H. OTOH, I look around at all the Halcyon plants that I have divided off one original plant & realize that I'd a one spectacular H specimen only if I hadn't been so shovel happy....See MoreOak seedling (sapling?) with curvature at root collar
Comments (2)Hair, I don't have first hand knowledge, but since the rootflare area isn't buried and the tree is growing towards the light, ( I am guessing) you are likely going to have a nice interesting growing trunked tree there, I would be happy if there is a bit of an interesting crook of growth of the tree VS plain ole straight up-ness....See MoreWhere to find root crown on meyer lemon (cuttings)
Comments (4)Are there general recommendations on planting depth for cuttings then? I've used a paper towel roll to keep the soil 'away' from the trunk where there were no roots, about the depth of the 'bag' it was planted in originally. Good enough? (I'm used to "regular" vegetative growth plants, not woody ones. Many of the rules are different now!)...See Morejenn
12 years agojenn
12 years agohoustontexas123
12 years agogreenman28 NorCal 7b/8a
12 years agomcschultz13
6 years ago
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