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Post by gardenofeden on Jun 16, 2008 14:57:57 GMT
I've never found any pink colouration in my DM08 (ie. Justina Davis) conversely, I have....so mine isn't 'Justina Davis'...
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Post by BarryRice on Jul 1, 2008 15:58:21 GMT
Hi Barry, Sorry to ask such a mundane question...but what size pots are you using? I am using converted 30 oz drinking cups for the root depth, but your pots are so more space efficient than mine... Cheers, Joe The pots I use are standard little pots that we use all the time here in California. Nothing special to them...
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Post by RL7836 on Jul 3, 2008 15:26:58 GMT
I grow these plants under 6 fluorescent bulbs, and as you can see, they've got great color. Barry, Your fluorescent tubes are T-12, T-8, T-5 size? Mirror reflectors? Also, what distance from the media to the lamps? I don't think I've seen these colors before under artificial lights (although maybe I just haven't paid attention...).
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Post by Dave Evans on Jul 9, 2008 4:08:59 GMT
Dear Barry,
I think I mentioned a couple of years back, all the green clones I have ever tried do show a pink blush now and then sometimes seasonally.
I do think the problem is #4: The description of Dionaea 'Justina Davis' is simply incomplete.
The same is true of all the plants of Drosera 'Albino', the stalks of the traps will develop a pink blush, but not for all cultivators. This sound about the same. Clearly not anthocyanin-free as assumed by the author because of the white flowers... I do think 'Justina Davis' are correctly identified and that all the characteristics of plant are not in the description.
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Post by BarryRice on Jul 9, 2008 16:02:12 GMT
I grow these plants under 6 fluorescent bulbs, and as you can see, they've got great color. Barry, Your fluorescent tubes are T-12, T-8, T-5 size? Mirror reflectors? Also, what distance from the media to the lamps? I don't think I've seen these colors before under artificial lights (although maybe I just haven't paid attention...). T-12, a mix of cool white and warm white, about 12cm from the bulbs, the walls of the terrarium are lined with reflective mylar, and the fixtures themselves are covered with reflective automobile tape. B
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Post by BarryRice on Jul 9, 2008 16:07:35 GMT
Dear Barry, I think I mentioned a couple of years back, all the green clones I have ever tried do show a pink blush now and then sometimes seasonally. I do think the problem is #4: The description of Dionaea 'Justina Davis' is simply incomplete. The same is true of all the plants of Drosera 'Albino', the stalks of the traps will develop a pink blush, but not for all cultivators. This sound about the same. Clearly not anthocyanin-free as assumed by the author because of the white flowers... I do think 'Justina Davis' are correctly identified and that all the characteristics of plant are not in the description. Hey Dave, You might be right on all counts. I don't know. I'm still running tests.
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Post by Alexis on Jul 9, 2008 22:24:57 GMT
Lo and behold I can see a slight pink tinge on two new traps. They are being held slightly upright, not rosetted as with all the previous green traps.
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Post by mmlr38 on Jul 15, 2008 20:03:10 GMT
I grow these plants under 6 fluorescent bulbs, and as you can see, they've got great color. Barry, Your fluorescent tubes are T-12, T-8, T-5 size? Mirror reflectors? Also, what distance from the media to the lamps? I don't think I've seen these colors before under artificial lights (although maybe I just haven't paid attention...). I actually get better coloration from my plants under artificial lights than I do in sunlight. There could be a few reasons for this, but perhaps the primary reason is that the ones I grow in sunlight are often tripped closed by insects soon after they open. This doesn't allow them proper time to color up nicely. With the plants that I have experimented with under artificial lights, it takes a good 4 weeks or so after the traps opens for them to turn blood red like this typical: Grown under 6 fluorescent lights (very similar setup to Barry's). I can't wait to get my greenhouse set up (probably not until next fall) and see if the plants in it get good coloration when they are more protected from the elements and so many insects.
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Post by mmlr38 on Jul 15, 2008 20:07:49 GMT
Lo and behold I can see a slight pink tinge on two new traps. They are being held slightly upright, not rosetted as with all the previous green traps. My JD is growing great recently with the longer days and warm weather here and all of the new traps that it is putting out appear to be completely green....no more pink tinge like I was seeing in early spring. Perhaps Dave is correct about the seasonal variance in coloration of the all green varieties of CPs.
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Post by cmm889 on Jul 19, 2008 0:24:53 GMT
Just saying to keep up the research, I'm very interested in this topic as I have a very awesome Justina Davis that I every so often get really concerned about thinking... surely in that tiny division or trap as it was just opening see the slightest hint of pink, I always thought it was my eyes becuase all my other traps blood red and the JD's when fully opened have always been completely and entirely green... I'm intersted to see if I can still actually call these green devils " Justina Davis " ... either way keep up the good work
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Post by Aidan on Jul 19, 2008 2:15:13 GMT
I do think 'Justina Davis' are correctly identified and that all the characteristics of plant are not in the description. I grow a number of "All-Green" flytraps and with one exception they all grow blush-pink traps in spring and/or autumn. This plant is the exception - DM27 Dionaea muscipulaVigorous All-Green/Yellow Form Grown under strong light the plant assumes a distinctly yellow hue and is not the "electric green" of Barry's description. In lower light however it does remain a bright, apple green. May this flytrap be considered to be 'Justina Davis'? Picture me shrugging...
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Post by Dave Evans on Jul 19, 2008 4:04:40 GMT
Aidan, This in an interesting question... This isn't the clone Barry named as 'Justina Davis', but at least it is all-green. I think the description of 'Justina Davis' will have to be updated to include a slight blush now and then; or under certain conditions. What fare maiden doesn't blush on occasion? I would consider a new name for your yellow-green (and rather creepy-looking) clone. Just kidding about the creepy part, but your photos superbly highlight the carnivorous nature of the plant.
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kby
Full Member
Posts: 162
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Post by kby on Jul 19, 2008 7:42:42 GMT
Part of the problem is that fine color perception differs between people plus the vagarities of the transmission media...to me it looks like there's a slight blush in some traps but it could also be that the overall light is warm relative to the spectral sensitivity of the electronics. I notice that the clone I have from Dave Conner (i.e. Barry's) looks kinda yellowish grown in full sunlight too, but there was definitely a blush earlier (albeit more pronounced than Aidan's).-kby
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Post by Aidan on Jul 19, 2008 10:31:16 GMT
Yes, photos may be be deceptive and the response of every viewers monitor (and eyes!) is different. The images were taken in overcast conditions using the appropriate white balance. Any colouration that you may perceive are senescing leaves beginning to die back - i.e. turning brown.
Dave - Between taking photos I had to wait for the unfortunate harvestman to stop thrashing its legs...
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Post by Not a Number on Jul 22, 2008 16:07:30 GMT
T-12, a mix of cool white and warm white, about 12cm from the bulbs, the walls of the terrarium are lined with reflective mylar, and the fixtures themselves are covered with reflective automobile tape. B What are your photoperiods? Do you switch gradually in increments?
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