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Everything posted by johns

  1. The relative humidity is quite low, perhaps 30%. Wouldn't covering be beneficial for germination?
  2. I'm wondering if anybody has had success with growing sundews (capensis in this case) from seed in a propagator/covered seed tray on a sunny windowsill. The daylength will soon exceed 13 hours, so there should be enough light. But I'm concerned that it will get too hot in the direct sunlight.
  3. It looks like P. esseriana or P. jaumavensis.
  4. I like the fluorescent colours, actually they faintly remind me of the decoration at goa/psy-trance parties. I wonder how the acrylic painting looks like in UV light. :)
  5. Note that the sundews are subtropical, and might be happier in a terrarium or on a sunny windowsill. They'll likely die down if the temperatures drop below zero for an extended period, but from what I've read they should come back from the roots in spring. There are more cold tolerant, native sundews such as D. rotundifolia and D. anglica that form hibernacula in the autumn.
  6. See this thread:
  7. Thanks for the reply, that's what I wanted to know.
  8. I wonder if anybody has tried P. emarginata leaf cuttings, and could advice on how well it works (or not), and how much risk there is of damaging the plant. (Have tried searching, but didn't find anything about P. emarginata specifically.)
  9. johns

    Drosera Capensis

    I'm sure somebody who knows will come along with advice, but you might want to try searching for capensis in the Indoor & Outdoor Cultivation -> Dormancy forum. There are quite a few topics where D. capensis is mentioned.
  10. Dried sphagnum moss is useful for covering pot drainage holes to avoid soil being washed out. But if one doesn't have any handy, are there any good alternatives?
  11. My experience with Mimosas: I sowed five Mimosa pudica seeds february last year. To start with the seedlings were in the terrarium in the same tray as CPs, standing in water (sensitive plants don't seem to mind). After a while I moved them to a sunny windowsill, and in July I made a of the plants.Then I went on vacation, and came home to shrivelled, dead-looking plants (quite sad). I cut down the stems to remove all dead growth, and happily after a week or two new growth started appearing. Now they look nearly as sad once again. Autumn/winter came, with a mix of short days, cold air fro
  12. Happy new year One CP-related goal that I have for 2011, mentioning it here so I'm hopefully more likely to do it: create a 1-2 month timelapse of a Mexican butterwort.
  13. johns

    Drosera anglica

    You might find this interesting:
  14. Yeah. UK has a compatible system, only an adapter is needed.
  15. We have both rainy and proper winters (or more usually a mix of both), but in my opinion (despite it being absolutely freezing), it's better when it's snowy and cold. The snow is beautiful and also reflects any light, making the nights brighter.
  16. Sorry if I'm spamming, but you might enjoy this post from January, where I posted pictures of a snowy sundew bog.
  17. I'm fond of purpurea too, possibly my favourite CP next to the common butterwort. Had a look at the one pictured today. Because I covered it with fleece due to strong frost a few weeks ago, and subsequent wet snow and rain, most of the pitchers have gotten deformed. (I don't have a minibog to put it in, nor somewhere to dig a hole to partially cover it.) Still some green on it though. The temperature is going to drop to -19 deg C tonight, so I put it behind a hedge conifer (where snow usually accumulates) and covered it with a pile of snow. Hopefully it will survive the winter.
  18. Here's my very small-scale attempt. I mixed hobby gypsum with water per the instructions on the label, and then mixed in about the same amount (or slightly more) of soil mix (1:1:1:1 coco peat/coir, sand, perlite, vermiculite). I shaped the block to fit the ceramic pot and made a 2cm hole that I filled with material scraped off the block. The plant is a P. moctezumae seedling which has been suffering from browning of the leaf tips for some strange reason (two other P. moctezumae seedlings in the same terrarium are doing just fine).
  19. Do you have a reference for that (loss of spectrum)? I've used the same T5 HO tubes for a year without any noticeable loss of colouration on the plants. Anyway, to try to answer the original question. From what I've read T5 is more efficient at room temperature, at lower temperatures T8 is more efficient (that said, I've seen that e.g. Osram sell T5 tubes marketed to perform well at lower temperatures). A third option is T5 HO, which offers more wattage than T5 at the same lengths. I chose 2x 24W T5 HO tubes simply because for a 0.6m wide terrarium, it was the most wattage I could fit.
  20. I'm sure there are others here who since discovering carnivorous plants have become more passionate about plants in general. Does anybody have books about plants to recommend? I'll start with three that I read this year. Seed to Seed by Nicholas Harberd: a sort of diary about one scientists research into how plants grow and react to the environment, his experience of nature and updates on a thale-cress plant's growth through the year and what is happening inside the plant. I found it inspiring and really recommend it; read the review, my synopsis doesn't do it justice. The Emerald Planet by
  21. I think the word deliberate may be a bit off, considering that we're talking about plants. From the perspective of evolution and of the plants themselves, mechanisms for trapping and digesting result in increased fitness (i.e. more resources to spend on growth and reproduction), but at no stage are the plants or the evolutionary process that produce them aware that they're killing animals, just as the plants are not aware that producing beautiful flowers attract pollinators.
  22. The soil can indeed be drier than what one would expect. But the habitat was always slightly moist, for example where I found them growing along dirt roads, wet ditches provided extra moisture. The altitude was about 200 meters above sea level.