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 Post subject: Sunburn
PostPosted: Sun Apr 16, 2017 2:21 am 
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Joined: Sat Oct 01, 2005 9:14 pm
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Location: Carmichael, CA
Bamboo Society Membership: ABS - America
I had this Phy aureosulcata 'Aureocaulis' shoot sort of sheltered in a shrub until it was around 6' tall, the whole thing was bright lite-yellow. Moved it to full exposure a week ago.

Here is the side now away from the sun

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Here is the sun side with no camera flash

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With flash

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Even the remaining culm leaves are sunburned, the culm sections that had grown above the shrub did not darken so much

Attachment:
shoot.JPG
shoot.JPG [ 118.56 KiB | Viewed 347 times ]

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Brad Salmon, zone 9 Esparto, CA


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 Post subject: Re: Sunburn
PostPosted: Tue Apr 18, 2017 12:47 am 
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Joined: Sat Jan 03, 2009 4:13 pm
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Location: St. Louis area Location Details
Don't you wish there was a way to make that color permanent? So nice when it happens, but so temporary.

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My blog: It's not work, it's gardening!


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 Post subject: Re: Sunburn
PostPosted: Tue Apr 18, 2017 2:17 am 
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Location: Carmichael, CA
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I had some yellow groove stick with the burgundy one time, not this much but stayed.

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Brad Salmon, zone 9 Esparto, CA


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 Post subject: Re: Sunburn
PostPosted: Tue Apr 18, 2017 8:24 am 
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Joined: Sun Jan 16, 2011 12:05 am
Posts: 1142
Location: Ljubljana, Slovenia
They turn red even when they are 1 year old. I have some reddening on their lower nodes. I have yet to see what makes them red, it's strange that some years, they turn red readily at almost any amount of bright sunny days, while there are years when it can be sunny all the time and they color-up only slightly. I'm not sure what makes them prone to get more sunburn. Age of culms certainly plays a role, but there must be something else.

This year, culms (from last year) started coloring, but sadly, warm and sunny weather is gone for a while now (frost warnings agai :/). In a month or so, new shoots will be much more ready to get some color. It would be interesting to cut one year old culm that would get red. Would there be a way to get the pigment stay. I think in a geographic position a bit more to the south, with stronger sun could get some older culms to color-up.

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 Post subject: Re: Sunburn
PostPosted: Tue Apr 18, 2017 10:41 am 
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Location: Island off Cape Cod Massacusetts
I had some spectabilis come up with red/pink culms a few years ago. I think it was from the cold in that case. Those culms are now purplish. Last two years they came up normal yellow.


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 Post subject: Re: Sunburn
PostPosted: Tue Apr 18, 2017 2:03 pm 
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Location: Carmichael, CA
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I think temperature is a key factor as well, I rarely had it happen in Indiana but here I have lots of it. Chill not frost, seems key.

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Brad Salmon, zone 9 Esparto, CA


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