Banksia shoots dying
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Banksia shoots dying
This spring some leaves on a couple of my banksias have turned brown.
Does anyone have any ideas?
It looks like the shoots are dying.Does anyone have any ideas?
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Re: Banksia shoots dying
Hi Neil a few years back I lost a couple of banskia marginatias with the foilage turning brown then the whole branch dying and loss of tree with a boring pest laying its grubs right in the collars of where the branch meets the trunk the hole being a bit bigger than pin hole..hard to see before it was too late the cunning buggers basically ring barking from the inside, maybe worth a look.
Anthony
Anthony
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Re: Banksia shoots dying
Yeah that doesn’t look good. I swear this species is the bane of my banksia collection. I love them, but fair dinkum they are temperamental. I’ve found them to be somewhat tolerant to pest sprays, but other than that they are the most prone to pests and root issues of them all.
I wish you well Neil. I’ve lost 2 in the last year.
Since adding river sand to the mix, ive managed to get on top of the drainage issues.
I wish you well Neil. I’ve lost 2 in the last year.
Since adding river sand to the mix, ive managed to get on top of the drainage issues.
Rory
I style Bonsai naturally, just as they would appear in the wild.
Central Coast, NSW
Bonsai: Casuarina Leptospermum Banksia Phebalium Baeckea Melalueca Ficus
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How to reduce moss from the trunk without damaging the bark: viewtopic.php?p=295227#p295227
I style Bonsai naturally, just as they would appear in the wild.
Central Coast, NSW
Bonsai: Casuarina Leptospermum Banksia Phebalium Baeckea Melalueca Ficus
Growing Australian natives as Bonsai: viewtopic.php?p=289480#p289480
Buying and repotting Native nursery material: viewtopic.php?f=78&t=30724
Growing tips for Casuarina as Bonsai: viewtopic.php?p=244995#p244995
How to reduce moss from the trunk without damaging the bark: viewtopic.php?p=295227#p295227
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Re: Banksia shoots dying
Thanks for the ideas everyone.
I did not think of borers in this case Anthony but I have just checked - no signs. These shoots are quite small - see photos below.
This is a Tassy form of B. marginata. Another small B. integ (I think) has the same signs.
Never rule out anything Mike but also look past the 'accepted' for other possibilities. Although I do sometimes use standard fert on some of my banksias I can't remember whether these ones have had any thrive or just powerfeed.
Since those previous photos the affected shoots have continued to die back. Death is limited to last year's shoots. Now, new shoots are growing strongly The other banksia has even stronger new shoots growing in some places I can even see new shoots starting to grow from the base of some dead areas.
Any further ideas?
I did not think of borers in this case Anthony but I have just checked - no signs. These shoots are quite small - see photos below.
This is a Tassy form of B. marginata. Another small B. integ (I think) has the same signs.
Never rule out anything Mike but also look past the 'accepted' for other possibilities. Although I do sometimes use standard fert on some of my banksias I can't remember whether these ones have had any thrive or just powerfeed.
Since those previous photos the affected shoots have continued to die back. Death is limited to last year's shoots. Now, new shoots are growing strongly The other banksia has even stronger new shoots growing in some places I can even see new shoots starting to grow from the base of some dead areas.
Any further ideas?
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Re: Banksia shoots dying
Neil,
I do have a type of botrytis that affects all my Banksia. It starts out with a look similar to the red circled areas I highlighted from your pic. Just curious, but after a period of cloud or long periods of rain, do you notice it gets slowly worse?
It only really seems to affect the banksia in my collection. It comes from the Euc leaves and branches that drop from trees around me. I now have it in check thankfully.
But it looks similar to those highlighted areas for what is slowly starts out at.
The fact that whatever it is has spread to the integrifolia and caused die-back there is a little concerning. I do get the botrytis on my integrifolia too, but it isn't as impacting as it is on the serrata / aemula and marginata, I presume because of the stronger and faster growth the integrifolia exhibits.
I do have a type of botrytis that affects all my Banksia. It starts out with a look similar to the red circled areas I highlighted from your pic. Just curious, but after a period of cloud or long periods of rain, do you notice it gets slowly worse?
It only really seems to affect the banksia in my collection. It comes from the Euc leaves and branches that drop from trees around me. I now have it in check thankfully.
But it looks similar to those highlighted areas for what is slowly starts out at.
The fact that whatever it is has spread to the integrifolia and caused die-back there is a little concerning. I do get the botrytis on my integrifolia too, but it isn't as impacting as it is on the serrata / aemula and marginata, I presume because of the stronger and faster growth the integrifolia exhibits.
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Rory
I style Bonsai naturally, just as they would appear in the wild.
Central Coast, NSW
Bonsai: Casuarina Leptospermum Banksia Phebalium Baeckea Melalueca Ficus
Growing Australian natives as Bonsai: viewtopic.php?p=289480#p289480
Buying and repotting Native nursery material: viewtopic.php?f=78&t=30724
Growing tips for Casuarina as Bonsai: viewtopic.php?p=244995#p244995
How to reduce moss from the trunk without damaging the bark: viewtopic.php?p=295227#p295227
I style Bonsai naturally, just as they would appear in the wild.
Central Coast, NSW
Bonsai: Casuarina Leptospermum Banksia Phebalium Baeckea Melalueca Ficus
Growing Australian natives as Bonsai: viewtopic.php?p=289480#p289480
Buying and repotting Native nursery material: viewtopic.php?f=78&t=30724
Growing tips for Casuarina as Bonsai: viewtopic.php?p=244995#p244995
How to reduce moss from the trunk without damaging the bark: viewtopic.php?p=295227#p295227
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Re: Banksia shoots dying
Thanks for adding that as a possibility Rory. This usually happens in spring here, as the weather starts to get warmer and drier. I have no overhanging eucs or other trees but fungal infection could still happen.
I note that you appear to have made the assumption that this has spread from one plant to the other...........
I note that you appear to have made the assumption that this has spread from one plant to the other...........
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Re: Banksia shoots dying
Sorry Neil. Yes I didn't read that properly, I must have skim read that comment assuming you said it definitely had spread from one to the other. My bad.shibui wrote:This is a Tassy form of B. marginata. Another small B. integ (I think) has the same signs.
Last edited by Rory on January 8th, 2019, 7:55 am, edited 1 time in total.
Rory
I style Bonsai naturally, just as they would appear in the wild.
Central Coast, NSW
Bonsai: Casuarina Leptospermum Banksia Phebalium Baeckea Melalueca Ficus
Growing Australian natives as Bonsai: viewtopic.php?p=289480#p289480
Buying and repotting Native nursery material: viewtopic.php?f=78&t=30724
Growing tips for Casuarina as Bonsai: viewtopic.php?p=244995#p244995
How to reduce moss from the trunk without damaging the bark: viewtopic.php?p=295227#p295227
I style Bonsai naturally, just as they would appear in the wild.
Central Coast, NSW
Bonsai: Casuarina Leptospermum Banksia Phebalium Baeckea Melalueca Ficus
Growing Australian natives as Bonsai: viewtopic.php?p=289480#p289480
Buying and repotting Native nursery material: viewtopic.php?f=78&t=30724
Growing tips for Casuarina as Bonsai: viewtopic.php?p=244995#p244995
How to reduce moss from the trunk without damaging the bark: viewtopic.php?p=295227#p295227
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Re: Banksia shoots dying
I had a hunch about the cause of this dieback and this afternoon there are signs that my guess could be correct.
Take a look and see what you think.
Take a look and see what you think.
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Re: Banksia shoots dying
Lack of water.
Potbound?
Potbound?
One of the fabulous things about growing bonsai is as you get old and decrepit your trees get old and beautiful
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Re: Banksia shoots dying
I think you could be on to something shibui....
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