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Thread: Nepenthes robcantleyi (formerly known as Black Truncata)

  1. #249

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    I have two of these and they dont really increase in size for me. My friends is the same and he has near perfect conditions for neps. Our ghs are solid highland, do you think it prefers warmer condition or brighter light?

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    Mine grows fast and steady with the same highland conditions that all of my plants - more or less regardless of altitudinal requirements (with the exception of those specific "ultra" lowlanders) - experience. It has seen very warm days in the summer with nights in the 60s, to days in the low 70s and nights in the high 40s; it grows fine in both. Don't keep it too wet and give it the typical Nepenthes light intensity.

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    Decumbent Fanatic Jcal's Avatar
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    Sounds like I got what I really wanted in the end. None the less I will dig alittle deeper and get back to everyone.

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    Hmm maybe it should be moved to a brighter area

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    Quote Originally Posted by kevnep View Post
    I have two of these and they dont really increase in size for me. My friends is the same and he has near perfect conditions for neps. Our ghs are solid highland, do you think it prefers warmer condition or brighter light?
    Options A&B didn't work for me. I received a plant in the 1st release. It grew very well, so well that I needed to repot it into a larger pot after several months. Then growth stalled. I tried all kinds of stuff but it wasn't until I repotted again that it resumed normal growth. Originally planted in an airy mix with peat. 1st repot in larger pot with same mix as 1st (so it makes no sense that the media is an issue - right? Wrong!). 2nd repot was in a media without peat. Go figure...
    All the best,
    Ron
    You must do the thing you think you cannot do. --- Eleanor Roosevelt

    *** Growlist / Wants / Offers ***
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  6. #254
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    Quote Originally Posted by RL7836 View Post
    2nd repot was in a media without peat. Go figure...
    Now that is useful information! Thanks Ron.

    I have two plants from two different vendors. Both are doing exceedingly well in my highland greenhouse. (although day temps from June through early October can reach 83F for brief periods, which technically places my GH into the intermediate range. Night temps are always below 60F year-round, however, and almost always 55F or less) Light intensity is, well....intense! I use shade cloth from about ten AM in the morning (only from June to mid-September) till about 4 or 5 in the afternoon. (I roll it on and off as needed) The times when shade cloth is not in place, the plants get full sun exposure. Some types, like the hybrids heavily influenced by N. veitchii, are that pale yellow-green hue that indicates they are receiving maximum light intensity, but my plants never burn, so I conclude they are getting optimal light.

    Under these conditions, the robcantleyis are producing lamina and pitchers that almost double in size with each new growth. Both, however, I would classify as slow growers; not as slow as N. lowii, but close. My one complaint about this species (if it is really a species: opinions vary!) is that in bright light the lamina get marked with those so-called "rust" spots; unsightly when there are a lot, but it doesn't seem to affect the plants health. Fungicides do not appear to stop these spots from forming, so I question whether there is actually a pathogen at work here, as some growers claim. Conspicuously, only certain species and their offspring are inclined to do this, and mainly during the summer months when light is most intense. For me, lowii and its hybrids don't do this at all, while many spectabilis hybrids do, and my two BE clones of N. spectabilis get a lot of spotting, to the point of being quite unsightly. If anyone can share their experiences with this leaf spotting issue, I'd like to hear more opinions. (Empirical data preferred, of course; anecdotal info isn't very helpful)

    Paul
    Last edited by Whimgrinder; 10-10-2012 at 06:44 AM.

  7. #255

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    So what media do you use for the plants, do you think i should repot?

    Paul ive seen rust spots on many healthy plants espdcially lowlanders grown in very bright light it seems some species and their hybrids do indeed do this ive had a few plants do this without ill effect and fungicedes didnt help. I see in photos of neps in nature that they also have the spots. Maybe its natural

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    Tastes like chicken! Exo's Avatar
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    Well, I can tell you my experiences with this rather fickle species....

    1. Mine does NOT like HL temps, it is an obligate intermediate, night temps below 60 really seem to get it's panties in a bunch.

    2. Mine does NOT like intense light, it get's the aformentioned "rusty spots" and all sorts of uglyness. so far, I have found a nice spot about a foot and a half below 2 T5 shoplights that it seems to like.

    3. It does NOT like peat, as has been said, this plant likes a VERY airy mix, and like truncata, doesn't seem to mind being kept a bit dryer once in a while. so far, a mix of orchid bark, lava rock, and LFS seems to please it.
    Some days it just isn't worth chewing thru the restraints.

    My growlist: http://www.terraforums.com/forums/sh...255#post961255

    Video of my birth http://www.youtube.com/watch?v=7Xc5wIpUenQ

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