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Thread: Fertilizing Drosera

  1. #9
    Gardening freak! tommyr's Avatar
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    I too crush up a beta pellet and lightly sprinkle a TINY bit on one or two leaves. about once a month if I remember.
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  2. #10

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    I think I know why your plants are burning macro nutrients. Read your fertilizers, does it have anything else in it besides nitrogen potassium and phosphorus? Yes? Then don't use it.

    You want orchid fertilizer, Shultz works nicely, there are many other types I personally mix my own and use hormones for babies, like gba3, cytokines, naa, IBA, all depends what stage.

    DNF is another brand one can use , there's a "veg fortifier" that has 14-60-14 I have used it 1/2 strength at 610ppm no problems..I wouldn't suggest that, always start at 1/4 or even 1/8 strength and work your way up.

  3. #11
    Hello, I must be going... Not a Number's Avatar
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    Some guidelines for fertilizing CPs, Drosera in particular.

    Hanrahan, Bob (1986) Simplistic CP Fertilization Facts. Carniv. Pl. Newslett. 15(2):53 (PDF)

    Try a lower concentration. You may be having photo-toxicity issues too. Try fertilizing very early in the morning or early evening. If they are outdoors or in a greenhouse there is plenty of micro fauna (springtails etc.) but additional fertilization about twice a month does not hurt. I would not fertilize more than twice a month until you see how the plants react over a few months.
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  4. #12
    cwatson1414's Avatar
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    Cthulhu138: That isn't something I had considered as the cause of this leaf damage, but I will think of it. The damage looks most comparable to aphid damage. I keep a close eye on temps in my grow space with an infrared thermometer. The day times are around 83, but there is a significant drop at night. Around 20 degrees. My capensis looks excellent right now, but d. venusta is holding few leaves at a time. I'll include some photos of the plants and space.

    Eithan: Ok, now there's something I had never considered. I believe you mean micronutrients, but yes, my fertilizer does contain iron, copper, boron, magnesium, manganese, molybdenum, and zinc. It works well with my pinguicula, but they are quite different.

    Nan: ah, there's another thing. I was fertilizing worth a heavy misting once a week. Perhaps just too much. I noticed they would sometimes stop growing for a day or too after a misting.

  5. #13

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    Aha no there's micro and macro nutrients , the metals are what's burning your dews. I've seen it time and time again they hate iron they hate zinc and they really don't like copper. Calcium is the big one that kills plants, even people who use rain water or low ppm tap water ( like me ) should consider flushing once a month or every 2 months. Don't feed as often and feed with less, change up your food to an orchid food with no additives and you will be cooking with fire in no time.
    Last edited by eithan0693; 10-15-2015 at 12:34 AM.

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