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 Fern ID please! 
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Joined: Fri Jul 01, 2016 7:37 pm
Posts: 55
Location: Cheshire UK
Post Fern ID please!
Hi, we got this fern a while back, supposedly from northern Thailand (long story), looks to me pretty much like Blechnum brasiliense though. What do others think? Also how hardy are these blechnums? usually we don't get below -3C here. Already have decent size second plant off the main one and about a million sporelings on the go (ok maybe not quite a million but it feels like it), wondering whether its worth a try outside next year.

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Mark


Sat Nov 26, 2016 5:32 pm
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Joined: Sun Jul 06, 2008 11:04 pm
Posts: 427
Location: South-east England
Post Re: Fern ID please!
Definitely Blechnum brasiliense ! They can take temperatures down to 3-4C but not freezing in my experience. I have a couple which survive the winter in a greenhouse where the heating come on if the temperature drops below 3C. I have another greenhouse with higher minimum winter temperatures, 7-8C, and of course they do much better there. If you have several plants you could try a very sheltered spot if you have one. They probably would survive occasional frosts, but not a big freeze like we had in 2009 and 2010 with prolonged sub-zero temperatures.

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Valdy


Sat Nov 26, 2016 6:02 pm
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Joined: Fri Jul 01, 2016 7:37 pm
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Location: Cheshire UK
Post Re: Fern ID please!
Ok, thanks for the confirmation. One for the greenhouse then!

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Mark


Sat Nov 26, 2016 6:27 pm
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Joined: Tue Jun 14, 2011 10:53 pm
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Location: Zadar-Croatia
Post Re: Fern ID please!
Could it be Blechnum orientale?


Sat Nov 26, 2016 8:44 pm
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Joined: Wed Oct 31, 2007 5:52 pm
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Location: Hayward- S.F. Bay area Ca.
Post Re: Fern ID please!
Extremely high water needs. One good dry out and its done fer.


Sun Nov 27, 2016 1:43 am
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Joined: Tue Oct 30, 2007 12:42 pm
Posts: 1237
Location: Gloucestershire, UK
Post Re: Fern ID please!
I agree with Valdy, though I would add that I tested a batch of young plants in a cold polytunnel last year and even with a minimum of -5 for brief periods a couple of times outside the tunnel all fronds were lost. About three quarters of the plants survived however and regrew well this season. It is clearly not as hardy as it is made out to be in trade though perhaps a tiny bit hardier than Valdy might suggest, but only a tiny bit.

You must live in a very mild part of Cheshire if your min low is usually -3c!! Usual being the last two years I suspect?

B. orientale is distinct in that the fronds are not dimorphic, so would be clearly separable when adult. It also looks different! (just saw some fine specimens just over a week ago in Burma).

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Sun Nov 27, 2016 11:42 am
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Joined: Fri Jul 01, 2016 7:37 pm
Posts: 55
Location: Cheshire UK
Post Re: Fern ID please!
Quote:
You must live in a very mild part of Cheshire if your min low is usually -3c!! Usual being the last two years I suspect?


Yes we are in a mild part of Cheshire, close to the tidal Mersey and benefit a few degrees because of it. The coldest we have ever had here was -10C for two weeks (2010) solid which killed of a lot of garden plants around here. My new-zealand parrots were still successfully breeding outside with no extra heating over that extremely cold xmas period, which is one reason I remember it so well.

The -10C was a once in a lifetime (hopefully) experience.

In fact this November is 3C colder than the last couple of years and we just had a first our real freeze of -3C on Saturday. With any luck it wont get any colder than that.

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Mark


Sun Nov 27, 2016 4:53 pm
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Joined: Fri Jul 01, 2016 7:37 pm
Posts: 55
Location: Cheshire UK
Post Re: Fern ID please!
Stan wrote:
Extremely high water needs. One good dry out and its done fer.


Yep, I keep it stood in water permanently, the roots grow out into the water tray. Took a large pup off it last summer and had it wilt several times in the heat, but once it got re-established it was ok.

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Mark


Sun Nov 27, 2016 4:55 pm
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Joined: Fri Jul 01, 2016 7:37 pm
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Location: Cheshire UK
Post Re: Fern ID please!
Its not mean with its spore production, these are self sown in a used perlite tray i had lying around...

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Mark


Wed Dec 07, 2016 1:16 pm
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Joined: Wed Nov 23, 2016 10:04 pm
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Location: west midlands UK
Post Re: Fern ID please!
yes deffo Blechnum Brasiliense and def one for greenhouse over winter I keep mine in cold greenhouse but do also fleece when temps forecast around zero C or less

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Jimbo

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Wed Dec 07, 2016 10:22 pm
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Joined: Fri Jul 01, 2016 7:37 pm
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Location: Cheshire UK
Post Re: Fern ID please!
Updated pic, im probably being a bit anal, but when i look at internet photos it doesnt seem to fit, i dont know much about ferns though :roll:
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Mark


Sat Apr 08, 2017 7:58 pm
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Joined: Fri Jul 01, 2016 7:37 pm
Posts: 55
Location: Cheshire UK
Post Re: Fern ID please!
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Mark


Sat Apr 08, 2017 9:02 pm
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Joined: Fri Jul 01, 2016 7:37 pm
Posts: 55
Location: Cheshire UK
Post Re: Fern ID please!
Actually I'd like to delete the last two posts. I checked the leaves this morning and the sori distribution is quite variable. It does look like an exact match to brasiliense...

I'm finally 100% convinced. The seller must have had a mix up!

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Mark


Sun Apr 09, 2017 7:42 am
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