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Thread: Drosera Leaves Turning Black From Tips to Base?

  1. #1
    Formerly known as Pineapple Nepenthesis's Avatar
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    Drosera Leaves Turning Black From Tips to Base?

    This happens with almost all my Drosera except my pygmies.

    Scenario 1:

    I put any Drosera in a tray of distilled water... This has been done with multiple container colors, sizes, ect. I fill it up to almost the top of the container and I either keep it at that level, usually over an inch below the pot rim (used to do that, but stopped) OR I fill it to that level and let it drain dry before watering again. Result: Drosera leaves turn black from tips to base.

    Scenario 2:

    I put any Drosera in any of my Sphagnum cultures. I keep the water level about half way between the bottom of the container and the medium level. That is about 1" or 1.5" of water, sometimes more and sometimes less. Their roots are likely submerged or partially submerged in water, with frequent culture floodings. All Drosera in these conditions thrive. Temperate or tropical, they thrive. Some grow naturally, springing up from seeds that were in the Sphagnum. I have found sarracenia and VFTs in there, but mainly Drosera. There are spatulata, capensis, binata, rotundifolia and many other unidentified species growing. No matter what, they thrive.

    Conditions:

    72-82F during the day and 54F at night year round, with minor temperature variations due to season. 60% humidity and higher during the day, 70% in the evenings and 90% at night on average. They are growing in a greenhouse with my highland Nepenthes, which grow great for me. 50% shade cloth Arpil-October, lower light levels in the other months.

    As you can see, there is conflicting information in me experiences with how much water they can handle. Was wondering if anyone could provide advice as to how to fix this... I'm sure it has to be water. It wouldn't make sense that all potted Drosera do this and ones in Sphagnum cultures don't, it has to be water... Any care tips for Drosera (I guess it is kinda late for that now that I own a ton of them lol) would be great. I know I'm really... derpy... for killing Drosera. Especially capensis, I have killed those too (but brought them back)... When my Drosera lose all their leaves, I move them into the Sphagnum cultures and they come back magically.

    TL;DR: My Drosera turn black from the tips to the base of the leaves. What could cause this?

  2. #2
    Happy hour.. Api's Avatar
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    What soil mix do you use for scenario 1?
    Brennan
    My growlist: http://bit.ly/VUE0ri

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    Formerly known as Pineapple Nepenthesis's Avatar
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    Quote Originally Posted by Api View Post
    What soil mix do you use for scenario 1?
    I never repot, I use what they are growing well in. It is mainly peat, though.

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    Happy hour.. Api's Avatar
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    Well repotting every year or so and using a 1:1 peat:sand soil for most plants should work okay. Works wonders for me. Usually on repotting you can just wait for the plant to overgrow its pot.
    Brennan
    My growlist: http://bit.ly/VUE0ri

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    Formerly known as Pineapple Nepenthesis's Avatar
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    Quote Originally Posted by Api View Post
    Well repotting every year or so and using a 1:1 peat:sand soil for most plants should work okay. Works wonders for me. Usually on repotting you can just wait for the plant to overgrow its pot.
    I highly doubt this is a repotting issue if it is happening with every single one of my Drosera... Except pygmies.

  6. #6
    Happy hour.. Api's Avatar
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    Well look at your soil. Also you say you use a shade cloth? Perhaps they're not receiving enough light?
    Brennan
    My growlist: http://bit.ly/VUE0ri

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    Formerly known as Pineapple Nepenthesis's Avatar
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    Quote Originally Posted by Api View Post
    Well look at your soil. Also you say you use a shade cloth? Perhaps they're not receiving enough light?
    My Nepenthes are receiving enough light as well as the Drosera in the Sphagnum cultures which are also under the shade cloth. If they weren't getting enough light, I wouldn't have even bought shade cloth. I have it because there is too much light.

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    Quote Originally Posted by Api View Post
    Well repotting every year or so and using a 1:1 peat:sand soil for most plants should work okay. Works wonders for me. Usually on repotting you can just wait for the plant to overgrow its pot.
    Yeah, thinking along similar lines as Api (refreshing the soil- one consequence of which is a refreshing of the pH)- Senario 2 the difference seems to be you have placed the pots in a Sphagnum culture right? I caught myself wondering if the pH is being buffered by the Sphagnum. I know that seems a little weird but I would check the pH. I am not so sure it is the water (well, maybe in a way kinda...)- I think the Sphagnum is doing something (I have no particular reason for believing that though).

    Quote Originally Posted by Pineapple View Post
    I know I'm really... derpy... for killing Drosera.
    Uh.... well...
    Quote Originally Posted by Pineapple View Post
    When my Drosera lose all their leaves, I move them into the Sphagnum cultures and they come back magically.
    Sounds like you have a dang good solution here

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