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| Yellow Pine Needles http://weetrees.co.uk/phpBB3/viewtopic.php?f=5&t=18004 |
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| Author: | allangbarrie [ 11 Sep 2018, 08:25 ] |
| Post subject: | Yellow Pine Needles |
I collected this pine in March 2015 and it has grown well each season. Only trouble is that towards the end of each summer, the needles have turned yellow and fallen off. It seems healthy, apart from the obvious, and bounces back each spring. I’ve been giving it a squirt of Rose Clear through the growing season as I thought it might be fungal. Any ideas? 2 weeks ago  Today  
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| Author: | richardb [ 11 Sep 2018, 08:38 ] |
| Post subject: | Re: Yellow Pine Needles |
The 3 yr old needles will turn yellow every autumn and fall off. When the have turned yellow just lightly brush the branch with your fingers to remove them. It's perfectly normal. All of my pines have started to yellow. If you look jn the parks and woods it is already happening on the native scots pines. |
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| Author: | allangbarrie [ 11 Sep 2018, 08:46 ] |
| Post subject: | Re: Yellow Pine Needles |
richardb wrote: The 3 yr old needles will turn yellow every autumn and fall off. Unfortunately these are all this year’s needles :( |
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| Author: | TomB [ 11 Sep 2018, 08:47 ] |
| Post subject: | Re: Yellow Pine Needles |
richardb wrote: The 3 yr old needles will turn yellow every autumn and fall off. When the have turned yellow just lightly brush the branch with your fingers to remove them. It's perfectly normal. All of my pines have started to yellow. If you look jn the parks and woods it is already happening on the native scots pines. Not the current year's growth though, which is what this looks like, if I'm understanding the final picture correctly. I'd guess it may have been kept too wet. |
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| Author: | allangbarrie [ 11 Sep 2018, 09:14 ] |
| Post subject: | Re: Yellow Pine Needles |
I did wonder if it was too wet. It’s in a cat litter and gravel mix. I’ll repot with more gravel and be less generous with its watering. |
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| Author: | Gary Jones [ 11 Sep 2018, 09:48 ] |
| Post subject: | Re: Yellow Pine Needles |
Yellow needles is often too much water. I've had similar problems and re-potting in a much drier mix (lava, pumice and akadama) has made a huge difference. |
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| Author: | TomB [ 11 Sep 2018, 09:56 ] |
| Post subject: | Re: Yellow Pine Needles |
allangbarrie wrote: I did wonder if it was too wet. It’s in a cat litter and gravel mix. I’ll repot with more gravel and be less generous with its watering. I'd suggest using a more porous component than gravel, either pumice or lava. Gravel is pretty useless for anything other than making the pot heavy to be honest. |
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| Author: | allangbarrie [ 11 Sep 2018, 22:33 ] |
| Post subject: | Re: Yellow Pine Needles |
Would more porous not equal more wet? |
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| Author: | TomB [ 12 Sep 2018, 08:11 ] |
| Post subject: | Re: Yellow Pine Needles |
allangbarrie wrote: Would more porous not equal more wet? It means there is more space for air in the substrate ('air filled porosity'). Have a read of this if you've not already seen it. https://www.kaizenbonsai.com/bonsai-tre ... nsai-trees Look at his comments on horticultural grit (gravel). |
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| Author: | paulpash [ 12 Sep 2018, 10:31 ] |
| Post subject: | Re: Yellow Pine Needles |
Pumice is a great addition to a pine substrate imo. My Scots & Mugo are all in a 50-50 pumice / Sanicat mix. Gravel is cold & heavy - I wouldn't use it for bonsai at all tbh. Whichever mix you go for make sure it's all the same grade - mine's quite coarse which makes it free draining. |
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