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Post by petmantis on Aug 21, 2009 20:06:56 GMT -5
I'm getting a D. linearis plant soon, and considering I haven't found much helpful information on the internet, I thought it would be a good idea to ask around here. Time for a load of questions ;D 1. What medium do I use for planting? Tom told me you're supposed to use alkaline media, yet they can also be found growing in Sphagnum. 2. How cold do I keep it during winter? It seems important to keep it just above freezing, would sticking it in the freezer do the trick? 3. How much water should it be in? Is it ok to grow it in the same water trays as my other Canadian drosera, eg Rotundifolia, Filiformis, Intermedia, Anglica... 4. Why does the hybernacula usually rot during winter? This could be bad news, should I take a few leaf cuttings to make sure the plant won't be gone from my collection if it decides to kick the bucket? 5. How do I make sure that once the plant goes dormant (in about june-august, hot months), it doesn't come back? I've heard that letting it come out of its hybernacula stage will weaken it very much, so once winter comes around there's little chance it will survive. More questions to come soon, as new problems arise
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Post by tom on Aug 21, 2009 20:42:57 GMT -5
i would keep it outside for the teperature requirement. It's where it grows anyway.
for water, do as with others, but water table is usually high on sites where i saw it, since it wasgrow near the pools margins, but as do with D. intermedia, anglica, etc in situ, although they do fine with the tray method in cultivation.
A lot of locations of D. linearis grow in alkaline peatlands (fens), some locations, as one i once posted pictures of, was a poor fens, near bogs conditions. The ones im sending you come from an alkaline site, so you have more chances of success with an alkaline media IMO. You can emulate alkaline/fens conditions by adding lime to peat. in a scientific paper on fen plant restoration, the author was liming peat by adding about 4 g of horticultural lime to about a 2.5 x 2.5 x 2.5 cm pot of peat: sand mix (use your typical media, plus the lime). The 'liming' capacity can vary depending of the type of lime used, but i wouldnt bother that much about it.
if the plant is kept outside, it shouldnt come back by itself. The photoperiod and temperature of the season should take caere of maintaining in its dormant state until the spring comes.
Rob or O. Marthaler (or others) might shime in, as i think they are more skillful than i am with this plant.
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reivilo1960
Seed
neps, darlings, hardy droseras, Switzerland
Posts: 29
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Post by reivilo1960 on Jan 19, 2010 18:18:03 GMT -5
Hi Petmantis,
Here Olivier, from French-speaking Switzerland. It's been months since I haven't come back on the forum. So, to try and answer question 4, how to make them survive over the winter, I have tried 2 ways, neither of which seems perfect or awful: 1° keep the pot just above freezing, with compost almost dry. When humifying it again in the spring, use fungicide. About 50% success 2° keep your plants underwater all winter. This water should be very cold, just above freezing, too. You might change this water from time to time. In the spring, remove part of the water and use fungicide, too. Same rate of success as n°1 3° some folks keep their plants in solid ice all winter. I started doing this late in Autumn 09, so can't tell you how successful it will be. I guess in the springtime, you need to do the same as for 1 and 2.
Finallly, if you're good at German, Andreas Fleischmann (German forum for example), is THE expert.
Enfin, pour le français, tu peux me contacter perso, et je verrai si je peux t'aider...
Good luck and all the best, Olivier
(Hi Mr Moderator Tom!)
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Post by petmantis on Feb 14, 2010 22:22:16 GMT -5
Thanks for the tips Olivier!! Pm'd you as well. I'm using your #3 method ATM.
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Post by quatchi on Sept 13, 2011 23:02:50 GMT -5
I don't mean to bump this thread, but Petmantis, how did you end up doing with your linearis?
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