Acacia dealbata 'Gaulois Astier'
Re: Re: Drastic leaf loss
Shoot User
5953 0
Dear Kathy,
Thank you very much for your interest and helpful reply.
I also thought that it should be repotted but was reluctant to do so with the flower buds there, not far from being ready to open ! But your advice gave us the necessary push to get on with the job asap - a considerably larger pot for it and the right sort of soil mixture, we hope. I don't think the roots had been drowning as the day before we repotted water appeared out of the bottom, at long last !
I'm delighted to say that the leaf loss appears to have stopped with the fall of most of the old growth - none of the apparently recent good growth has been affected - and it's now flowering very well. We're losing some flower buds, but not too many, and that was perhaps to be expected given the timing of the repotting.
So, our mimosa is giving us the pleasure we hoped, and we trust that we shall be able to care for it so that there will be even more flowers and scent next year !!
Again, thank you for your advice.
Carolyn French
Thank you very much for your interest and helpful reply.
I also thought that it should be repotted but was reluctant to do so with the flower buds there, not far from being ready to open ! But your advice gave us the necessary push to get on with the job asap - a considerably larger pot for it and the right sort of soil mixture, we hope. I don't think the roots had been drowning as the day before we repotted water appeared out of the bottom, at long last !
I'm delighted to say that the leaf loss appears to have stopped with the fall of most of the old growth - none of the apparently recent good growth has been affected - and it's now flowering very well. We're losing some flower buds, but not too many, and that was perhaps to be expected given the timing of the repotting.
So, our mimosa is giving us the pleasure we hoped, and we trust that we shall be able to care for it so that there will be even more flowers and scent next year !!
Again, thank you for your advice.
Carolyn French
Posted: Wednesday 12th of March 2014 05:12 PM
Re: Drastic leaf loss
Kathy N
5953 1
Hi, Mrs. French,
It is always best to repot after purchasing a tree, particularly from retailers like you describe. My two biggest concerns are 1) no water draining from the pot and 2) the amount of water it is getting. If the pot does not drain, the roots are probably sitting in stagnant water. This is, basically, drowning the roots. Second, it does not need water every day in an pot indoors. I would repot immediately, replacing much of the old compost and making sure the roots are not girdling (circling) around the pot. Water well when your repot then water when the soil surface starts to feel dry.
Can you load a photo of the sticky substance - not sure about that yet.
Kathy C
It is always best to repot after purchasing a tree, particularly from retailers like you describe. My two biggest concerns are 1) no water draining from the pot and 2) the amount of water it is getting. If the pot does not drain, the roots are probably sitting in stagnant water. This is, basically, drowning the roots. Second, it does not need water every day in an pot indoors. I would repot immediately, replacing much of the old compost and making sure the roots are not girdling (circling) around the pot. Water well when your repot then water when the soil surface starts to feel dry.
Can you load a photo of the sticky substance - not sure about that yet.
Kathy C
Posted: Tuesday 18th of February 2014 08:24 PM
Drastic leaf loss
Shoot User
5953 1
I live in western France and bought Acacia Dealbata Gaulois from a local retailer ( not a grower, I think, more like "Wyevale" in UK ) just after Christmas, looking forward to the colour and the scent of the flowers. It's in a large, unheated enclosed verandah, with plenty of natural light, (large "French" windows along one "wall") where it should be fine, away from any frost or strong winds. So far it hasn't had to put up with much sunlight or heat this winter !!! Don't know its age - 10cms is trunk circumference where it appears above the soil and the current height at tallest shoots is 90 cms. It's been well-shaped, I feel, and has plenty of buds. Pot size is maximum 24 cms at top and the same in height. BUT in the last couple of weeks it has started and continued to shed its leaves profusely and I don't know why. They aren't really yellowed. I use rainwater for it and have watered most days because it seemed very dry when we brought it home from the garden centre. No water comes out at the bottom of the pot and it's only now that the soil at the top of the pot feels anyhow moist to the touch. Advice please, as the leaf loss is looking as though it will be desperate? Has it been left in too small a pot, perhaps to bring flower buds on, and should we re-pot it asap? Could it be a watering fault ? To reassure you about my flower care, I do have azalea, cyclamen and cymbidium all flowering well at the moment in the same room. But I don't think I'm doing very well with a "mimosa" that should be fairly tolerant. We have no intention of putting it in our small garden as there's no suitable spot. I've noticed today a slight sticky secretion where the tiny leaves join their "twig" (sorry ! I don't know the techinical terms for this ) and have no idea if this is usual with acacia or not. Thank you VERY much for reading this far and for any advice that you may be able to give me. I don't want to lose the plant !
Posted: Monday 17th of February 2014 03:18 PM Last reply: Wednesday 2nd of April 2025 07:52 AM
1262 0
It looks very much to me as if your tree is in the process of losing a branch. The stem where the foliage is dying, looks very dark, almost black. This is usually a sign with mimosa that this particular branch is failing. Keep an eye on the foliage further up the stem. If this too falls, i would advise removing the whole branch.
There are any number of reasons for this but this years weather has not been a Mimosa's friend. Its been too wet and not warm enough. Check your pot is adequately drained and that the compost dries out between watering.
Protecting indoors is sensible as they are not recognised as 100% hardy in this country, but reduce your watering whilst you over winter. It is difficult to see if the cause of the damage is viral or insect via photo but both are possible. Keeping a healthy one outdoors is always a matter of luck as opposed to science. You might manage it in central London or Cornwall where there are always a few degrees above average temperatures, anywhere else in the UK is a gamble.
Acacia can suffer from "red spider mite" or a virus may have got in through a pruning wound. You would need to have a piece looked at for proper diagnosis.
A light spray with general purpose fungacide or insecticide shouldnt hurt it but please do so with the plant outdoors. You dont want to end up gassing yourself.
Hope this helps.
There are any number of reasons for this but this years weather has not been a Mimosa's friend. Its been too wet and not warm enough. Check your pot is adequately drained and that the compost dries out between watering.
Protecting indoors is sensible as they are not recognised as 100% hardy in this country, but reduce your watering whilst you over winter. It is difficult to see if the cause of the damage is viral or insect via photo but both are possible. Keeping a healthy one outdoors is always a matter of luck as opposed to science. You might manage it in central London or Cornwall where there are always a few degrees above average temperatures, anywhere else in the UK is a gamble.
Acacia can suffer from "red spider mite" or a virus may have got in through a pruning wound. You would need to have a piece looked at for proper diagnosis.
A light spray with general purpose fungacide or insecticide shouldnt hurt it but please do so with the plant outdoors. You dont want to end up gassing yourself.
Hope this helps.
Posted: Friday 5th of October 2012 12:20 PM
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1262 1
My Mimosa is shedding last year's foliage and browning however this year's appears to be perfectly fine. Is this normal or am I doing something wrong? It has up until a few days ago been outside,in a partial shade/sheltered position, having just brought it into the conservatory for winter. I am partially sighted and this is the first Mimosa I have had so am a little concerned. Also do you have any tips for pruning this plant or should it not be done? Would appreciate any help please
Click images to enlarge
Click images to enlarge
Posted: Tuesday 2nd of October 2012 08:26 AM Last reply: Friday 14th of February 2025 09:23 PM
Re: seems to be going brown
Kathy N
1124 0
Hi, Annie,
It could be the stress of moving. When was it moved? Has it received adequate moisture since being moved? Is it firmly in the ground? Is it in acid soil in a frost-free place? Does its new location match the cultural requirements indicated on the plant page for 'Glaulois Astier' here on Shoot?
Kathy C
It could be the stress of moving. When was it moved? Has it received adequate moisture since being moved? Is it firmly in the ground? Is it in acid soil in a frost-free place? Does its new location match the cultural requirements indicated on the plant page for 'Glaulois Astier' here on Shoot?
Kathy C
Posted: Tuesday 6th of March 2012 07:19 PM
seems to be going brown
Shoot User
1124 1
why is this tree going brown, it used to be green grey but i moved it and lately it seems to be shedding
Posted: Thursday 1st of March 2012 09:27 PM Last reply: Thursday 27th of February 2025 07:44 PM
1065 0
Hi, Hayley,
I would say give it what it really wants when it is young to give it a healthy start. Having said that, however, the exposed aspect can be dependent upon where you live and how exposed the site truly is. Since Acacia dealbata 'Gaulois Astier'
has an H2/H3 rating, I would seriously consider an alternative if your area gets harsh winters/hard frost/freezing temps/strong winds. Or, it you really want this plant, consider giving it some serious winter protection.
Kathy C
I would say give it what it really wants when it is young to give it a healthy start. Having said that, however, the exposed aspect can be dependent upon where you live and how exposed the site truly is. Since Acacia dealbata 'Gaulois Astier'
has an H2/H3 rating, I would seriously consider an alternative if your area gets harsh winters/hard frost/freezing temps/strong winds. Or, it you really want this plant, consider giving it some serious winter protection.
Kathy C
Posted: Thursday 18th of August 2011 06:48 PM
1065 1
I can either have sheltered and shady or sunny and exposed? To note: in the sheltered/shade place, when it's taller, it would grow out of the shade and into the sun.
Posted: Sunday 14th of August 2011 05:44 PM Last reply: Sunday 2nd of March 2025 03:49 AM