johns

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Everything posted by johns

  1. Have been voting every day since I saw this topic (maybe with an exception or two).
  2. In case there's anybody here who hasn't yet gotten enough of pictures of the common butterwort, here are some taken in the Oslo forest this summer. I found them growing mainly on the side of dirt roads and wet parts of trails. The last group of pictures is from a flat, vegetation-free area below a dam. It's actually easier to find sundews (in particular the common sundew), as the numerous nutrient-poor bogs provide a natural home for them. The butterworts seem far less at home; to ramble on for a bit, what puzzles me is that there are seemingly no natural butterwort habitats to be found arou
  3. I think 2x 24W T5 HO or 18W T8 might be worth looking into, the tubes are a bit longer than the width of the terrarium though. Yet another option might be 2G11 tubes. These options are more expensive than using CFLs, but better because (somebody please correct me if I'm wrong) more light can be reflected by the reflectors, and because of the larger surface area of the tubes. They generate some heat though, if that's a problem it's a good idea to have a glass plate covering the top of the terrarium. 24h timers should be available in any hardware store. Also useful for controlling the photo per
  4. According to the ebay listing for the Exo Terra top, the max you can use is 26W. More generally it depends on the plants and how much light they need. In this thread, manders reported Nepenthes growing OK at 1000-4000 lux. I had Mexican Pinguicula growing at about 3000-4000 lux for 2-3 months, in my opinion it's on the lower end for them, and probably too low for most Drosera. Not sure about Cephalotus. At 15cm distance from the bulb, I don't think you can expect more than about 5000 lux. For trial and error, a light meter is helpful. I think it'll be hard to get proper light 45cm away from
  5. One 25W CFL for a 30cm tank might work, but the light will be strongest directly beneath the bulb, dropping off to the sides and further down in the tank. You may want to put the plants on a raised platform so that they're closer to the bulb (2x distance = 1/4 of the light).
  6. The frost has arrived. Picture taken this morning.
  7. At what distance from the light source did you measure?
  8. In other words, publication bias. :) Surely reporting a negative result is useful as well, as others may learn from it (i.e. what not to do).
  9. This is the right time of year, as the seeds need cold stratification to germinate. If sown outside now they will germinate when the weather warms up in spring.
  10. This may be helpful: http://www.carnivorousplants.org/seedbank/...gs_ColdTemp.htm
  11. Wow. What amazing plants and nature. Thank you for sharing.
  12. For anybody who is interested the full text can be found here (click one of the Full Text links on the page): http://jxb.oxfordjournals.org/content/61/1/5.abstract
  13. Interesting, thank you for posting. While fascinating, perhaps it is for the best if they're removed. By the way, have you ever photographed butterworts in Denmark? Would be interesting to see as well.
  14. For sowing fern spores it's often recommended to pour boiling water through the soil to sterilise it (the amount will depend on the size of pot). Can't see why it shouldn't work for VFTs as well.
  15. What about surface area of CFLs vs linear fluorescents? I used CFLs for a while (6W less wattage and poor light mounting so can't compare directly), the light was OK just below the bulbs but dropped sharply to the sides. The larger surface area of tubes give a more even light distribution (though the edges are a dark spot, only half the light as in the centre).
  16. I suggest that you search for envirolite on the forum. If I've understood correctly they are equivalent to the CFL you're considering, so some of the results should be helpful.
  17. Here is one recent thread: http://www.cpukforum.com/forum/index.php?showtopic=36696 Anyway, I have a terrarium (actually a modified aquarium) which isn't that much bigger than yours (around 23-25" wide). I use a T5 HO fixture intended for aquariums, with a reflector and two 24W T5 HO tubes (50cm wide). The plant trays are on a raised platform so that the top of the pots are 20cm below the lights. This is enough to give good colouration to Drosera aliciae and Pinguicula cyclosecta. Butterworts which require more light to colour up such as P. 'Aphrodite' and gracilis x moctezumae get a red tint
  18. Great pictures, thank you for sharing. You're fortunate to live in butterwort country nr 1. :) If you have any I'd appreciate seeing more overview pictures of the habitats, i.e. like pictures 1 and 11.
  19. A more recent (and maybe more plausible) theory is that life could have originated at a deep-sea hydrothermal vent. See e.g. this article. The really implausible and speculative is to suggest that some kind of "great intelligence" is involved (considering the prevalence of bad designs, one might wish to scratch off "intelligence"). For starters, one has to explain the origin of or at least evidence for this "intelligence", applying the same kind of healthy skepticism applied to any theories of the origin of life.
  20. The pictures were taken with a Canon camera with CHDK. For the stacking I used ImageJ with the Extended Depth of Field plugin (on windows I've also tried CombineZM with good results).
  21. Pinguicula gracilis x moctezumae (in the background P. 'Aphrodite' digesting a small piece of food). As can be seen the flower didn't develop 100% correctly for some reason. (This is a composite image, DoF stacking was used to try and show both flower and rosette.)
  22. Zermatt Zermatt is another popular tourist village, where one can take the Gornergratbahn up to 3000m. The Matterhorn was sadly hidden by clouds (otherwise I think it would've been visible in the picture of the lake). View from the top down into the valley. View towards the lakes where P. leptoceras grows. Finally, between two small lakes I found the beautiful P. leptoceras, which is endemic to the alps. Exactly what I had been hoping to find on the trip. P. leptoceras habitat, next to a lake at ~2700m. Only a few plants were in flower. P. leptoceras.
  23. After spending almost a week in Switzerland, I can safely say that its natural beauty is surpassed only by that of Norway. I managed to look for pings in three places: Mt. Pilatus and above Grindelwald and above Zermatt. Pilatus Pilatus is considered the northernmost part of the alps, and is only a short way from the city of Luzern. The path leading up to a viewing platform just above the ending station of both the aerial cableway and cogwheel railway. Below you can see Luzern. P. alpina growing right next to the path. Pingspotting in Switzerland is too easy. View from the top.
  24. johns

    Fat cabbage

    I was amused when I used google translate to translate a German page about butterworts to English. The word "Fettkraut" is translated as fat cabbage. :) A cultivar named Pinguicula "fat cabbage" anyone?
  25. The landscape and habitat reminds me of the pictures I've seen on pinguicula.org from Mexico. I wonder - are wet, vertical rock faces such as the one pictured actually the most common Pinguicula habitat (counted by number of species)? Thanks for sharing.