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#1
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Viburnum - advice needed
Hello, could someone help please? I'm trying to improve the
appearance of a neglected but hopefully healthy viburnum. I've done my best from the pics I've seen to identify it correctly as probably a bodnantense or, less likely I think, a grandiflorum. Around 6 weeks ago, at a height of possibly 10 feet or so, I started pruning off all the top growth and cut out some of the longer, older branches at ground level, removing probably about a third of the plant in one bash. It seems to have taken happily to this but most of the new growth is sprouting up again at the very top of the plant and this is exactly what I'm trying to avoid. Please forgive my ignorance on these matters, but I'm wondering if I can possibly set about the shrub again (now!) to remove even more of this newly growing top stuff, perhaps taking another foot or so of the old wood with it, with the objective of getting some new growth around the middle height of the plant. As things stand there is, as I say, a flourishing top and a fair bit of leafy growth near the base but a bald middle. At this stage I don't mind at all if whatever action is taken threatens the flowering possibility for the next year or two, all I'm trying to do is to give the plant, at this stage, a fuller leafy look. Any thoughts would be most appreciated. |
#2
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Viburnum - advice needed
fumbler wrote:
Hello, could someone help please? I'm trying to improve the appearance of a neglected but hopefully healthy viburnum. I've done my best from the pics I've seen to identify it correctly as probably a bodnantense or, less likely I think, a grandiflorum. Around 6 weeks ago, at a height of possibly 10 feet or so, I started pruning off all the top growth and cut out some of the longer, older branches at ground level, removing probably about a third of the plant in one bash. It seems to have taken happily to this but most of the new growth is sprouting up again at the very top of the plant and this is exactly what I'm trying to avoid. Please forgive my ignorance on these matters, but I'm wondering if I can possibly set about the shrub again (now!) to remove even more of this newly growing top stuff, perhaps taking another foot or so of the old wood with it, with the objective of getting some new growth around the middle height of the plant. As things stand there is, as I say, a flourishing top and a fair bit of leafy growth near the base but a bald middle. At this stage I don't mind at all if whatever action is taken threatens the flowering possibility for the next year or two, all I'm trying to do is to give the plant, at this stage, a fuller leafy look. Any thoughts would be most appreciated. First of all when does it flower? |
#3
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Viburnum - advice needed
On Sat, 07 Jul 2007 23:29:57 +0100, Frank Booth Snr
wrote: fumbler wrote: Hello, could someone help please? I'm trying to improve the appearance of a neglected but hopefully healthy viburnum. I've done my best from the pics I've seen to identify it correctly as probably a bodnantense or, less likely I think, a grandiflorum. Around 6 weeks ago, at a height of possibly 10 feet or so, I started pruning off all the top growth and cut out some of the longer, older branches at ground level, removing probably about a third of the plant in one bash. It seems to have taken happily to this but most of the new growth is sprouting up again at the very top of the plant and this is exactly what I'm trying to avoid. Please forgive my ignorance on these matters, but I'm wondering if I can possibly set about the shrub again (now!) to remove even more of this newly growing top stuff, perhaps taking another foot or so of the old wood with it, with the objective of getting some new growth around the middle height of the plant. As things stand there is, as I say, a flourishing top and a fair bit of leafy growth near the base but a bald middle. At this stage I don't mind at all if whatever action is taken threatens the flowering possibility for the next year or two, all I'm trying to do is to give the plant, at this stage, a fuller leafy look. Any thoughts would be most appreciated. First of all when does it flower? From late October through to January-Feb. |
#4
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Viburnum - advice needed
fumbler wrote:
Hello, could someone help please? I'm trying to improve the appearance of a neglected but hopefully healthy viburnum. I've done my best from the pics I've seen to identify it correctly as probably a bodnantense or, less likely I think, a grandiflorum. Around 6 weeks ago, at a height of possibly 10 feet or so, I started pruning off all the top growth and cut out some of the longer, older branches at ground level, removing probably about a third of the plant in one bash. It seems to have taken happily to this but most of the new growth is sprouting up again at the very top of the plant and this is exactly what I'm trying to avoid. Please forgive my ignorance on these matters, but I'm wondering if I can possibly set about the shrub again (now!) to remove even more of this newly growing top stuff, perhaps taking another foot or so of the old wood with it, with the objective of getting some new growth around the middle height of the plant. As things stand there is, as I say, a flourishing top and a fair bit of leafy growth near the base but a bald middle. At this stage I don't mind at all if whatever action is taken threatens the flowering possibility for the next year or two, all I'm trying to do is to give the plant, at this stage, a fuller leafy look. Any thoughts would be most appreciated. Viburnum Bodnantense tends to be less spreading in habit than Grandiflora and also has a longer flowering period over the late autumn winter months with a its main bloom in late winter. Otherwise both shrubs are similar with rose pink buds and white/pink blooms. It sounds like you only gave the new stems a light pruning. Normally you don't bother pruning it. But if you do it's best to leave it when it finishes flowering in late March then give it good prune, taking out all of the old wood and cutting back the newer stems by about 1/2 their length, additionally removing any overlapping or crowded stems to open up the shrub a bit. If you prune now you will take out the flowering buds as well. |
#5
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Viburnum - advice needed
On Sun, 08 Jul 2007 18:59:55 +0100, Frank Booth Snr
wrote: Viburnum Bodnantense tends to be less spreading in habit than Grandiflora and also has a longer flowering period over the late autumn winter months with a its main bloom in late winter. Otherwise both shrubs are similar with rose pink buds and white/pink blooms. It sounds like you only gave the new stems a light pruning. Normally you don't bother pruning it. But if you do it's best to leave it when it finishes flowering in late March then give it good prune, taking out all of the old wood and cutting back the newer stems by about 1/2 their length, additionally removing any overlapping or crowded stems to open up the shrub a bit. If you prune now you will take out the flowering buds as well. Thanks for your reply. I'll hang on till late March, but could I ask you a bit more about 'old wood'. Imagine this plant is like an upturned cone standing on it's point, about 8 feet high (now that I've lopped it) with a cone angle at it's base of about 30-35 deg. Spreading up from the point of the cone there's up to 18 or so long straight branches of what I would call old wood- it's fairly dense. Almost all the new growth is sprouting out vigourously from the top of each these dead straight branches - all stout and mature. There's a healthy leaf presence at the base but it doesn't look like it's going to develop into much. So, when you talk about taking out the old wood, it seems to me that there is nothing *but* old wood with new growth sprouting out of the top? Might it be a bit drastic to cut it all out? Effectively that would mean cutting the plant down completely to its base. How about taking out half of them and cut the other half back by 50% in length - then perhaps the same principle the following year? Incidentally, I notice that there are new buds, tiny tips most of them but abundant, sprouting freely along the length of each of the old stems. A few of them have started to poke out and are showing the beginning of a leaf but nothing like the vigour of the top shoots which have put on an extra 2 feet in the last 4 weeks! Basically, this seems to want to be a very tall plant. Thanks for you patience and any further insight. |
#6
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Viburnum - advice needed
fumbler wrote:
On Sun, 08 Jul 2007 18:59:55 +0100, Frank Booth Snr wrote: Viburnum Bodnantense tends to be less spreading in habit than Grandiflora and also has a longer flowering period over the late autumn winter months with a its main bloom in late winter. Otherwise both shrubs are similar with rose pink buds and white/pink blooms. It sounds like you only gave the new stems a light pruning. Normally you don't bother pruning it. But if you do it's best to leave it when it finishes flowering in late March then give it good prune, taking out all of the old wood and cutting back the newer stems by about 1/2 their length, additionally removing any overlapping or crowded stems to open up the shrub a bit. If you prune now you will take out the flowering buds as well. Thanks for your reply. I'll hang on till late March, but could I ask you a bit more about 'old wood'. Imagine this plant is like an upturned cone standing on it's point, about 8 feet high (now that I've lopped it) with a cone angle at it's base of about 30-35 deg. Spreading up from the point of the cone there's up to 18 or so long straight branches of what I would call old wood- it's fairly dense. Almost all the new growth is sprouting out vigourously from the top of each these dead straight branches - all stout and mature. There's a healthy leaf presence at the base but it doesn't look like it's going to develop into much. So, when you talk about taking out the old wood, it seems to me that there is nothing *but* old wood with new growth sprouting out of the top? Might it be a bit drastic to cut it all out? Effectively that would mean cutting the plant down completely to its base. How about taking out half of them and cut the other half back by 50% in length - then perhaps the same principle the following year? Incidentally, I notice that there are new buds, tiny tips most of them but abundant, sprouting freely along the length of each of the old stems. A few of them have started to poke out and are showing the beginning of a leaf but nothing like the vigour of the top shoots which have put on an extra 2 feet in the last 4 weeks! Basically, this seems to want to be a very tall plant. Thanks for you patience and any further insight. Well leave it for now until March unless you want to lose most of the flowering to come later. When you prune you are aiming for an inverted cone shape with sufficient light and air able to reach the centre of the shrub. Therefore I'd remove at least a 1/3 to 1/2 of the current old stems at equal distances around the outside of the shrub. I'd remove most (not all) of any stems old and new that arise from the central crown of the plant. Of the old stems that remain I'd hard prune down to 2-3 buds from their base. The newer taller outer stems say (2 yr growth or less), I'd prune by half their length to the nearest bud. You should then have a basic symmetrical shape, and will only need to do very light pruning in the following years, removing ingrowing side branches and continuing to remove more old stems until they are completely replaced by the newer ones. |
#7
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Viburnum - advice needed
On Sun, 08 Jul 2007 23:27:21 +0100, Frank Booth Snr
wrote: Well leave it for now until March unless you want to lose most of the flowering to come later. When you prune you are aiming for an inverted cone shape with sufficient light and air able to reach the centre of the shrub. Therefore I'd remove at least a 1/3 to 1/2 of the current old stems at equal distances around the outside of the shrub. I'd remove most (not all) of any stems old and new that arise from the central crown of the plant. Of the old stems that remain I'd hard prune down to 2-3 buds from their base. The newer taller outer stems say (2 yr growth or less), I'd prune by half their length to the nearest bud. You should then have a basic symmetrical shape, and will only need to do very light pruning in the following years, removing ingrowing side branches and continuing to remove more old stems until they are completely replaced by the newer ones. Excellent - thanks for the detail, much obliged. |
#8
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Viburnum - advice needed
Well leave it for now until March unless you want to lose most of the
flowering to come later. When you prune you are aiming for an inverted cone shape with sufficient light and air able to reach the centre of the shrub. Therefore I'd remove at least a 1/3 to 1/2 of the current old stems at equal distances around the outside of the shrub. I'd remove most (not all) of any stems old and new that arise from the central crown of the plant. Of the old stems that remain I'd hard prune down to 2-3 buds from their base. The newer taller outer stems say (2 yr growth or less), I'd prune by half their length to the nearest bud. You should then have a basic symmetrical shape, and will only need to do very light pruning in the following years, removing ingrowing side branches and continuing to remove more old stems until they are completely replaced by the newer ones. Just a quick update. There are flowers to be seen *now* - a couple in full bloom at the very top (I hadn't noticed the buds when they first appeared) and quite a few more on the way. There were definitely flowers late last autumn - I don't know if the current crop are a result of confusion after my untimely pruning or if this is other than the bodnantense it was thought to be. There's at least one website talking about the "dawn" viburnum where a second flush of flowers bloomed july/august. Is the march pruning still the best in the light of this do you think? |
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