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charliepridham
Joined: Sat Mar 29, 2008 1:42 pm Posts: 1925 Location: Cornwall
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Thalia dealbata
I am sure it was following a thread on here that I bought the one I spotted last September at a plant sale, anyway its done really well and has its first flower spike
Do they set seed? or need dividing?
_________________ Charlie, Growing climbers in Cornwall http://www.roselandhouse.co.uk
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Tue Jul 14, 2009 5:33 pm |
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Steve in france
Joined: Mon Oct 29, 2007 7:59 pm Posts: 492 Location: Rockville , Maryland , USA
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With
With it flowering now you should get seed, the seeds take a long time to mature. These plants do best in the biggest pot possible for your pond, they can be stunted and flower early if they are confined.pushing in a clay ball full of 3 or 4 month time release Osmocote for Veg will help feed the plant. These plants are very heavy feeders. They are hardy if you sink the pot in the pond or are pretty ice free. I believe Andrew in Holland has over Wintered his Thalia genticulata in his Pond , The green form that is not the Red Stem it's a wimp in Winter.Thalia dealbata is easy to divide and propagte from divisions.
That's about it really. Other than James Knock had heard of or seen a white flowering form that seems not to exist anymore. Be nice to find one tho.
All the Best
Steve
_________________ Always looking for a lost Pup
Last edited by Steve in france on Wed Jul 15, 2009 11:46 am, edited 1 time in total.
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Tue Jul 14, 2009 6:17 pm |
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kroisos
Joined: Tue Oct 30, 2007 9:46 pm Posts: 558 Location: koekelare, Belgium...
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they are much hardier than liturature sais! i forgot to put mine deeper in the pond and during that cold period it was frozen solid for over two weeks....they had no problem with that...even in the parts were they have got -20°C they survived without problem!
btw...there is a report of a cidp that survived -21°C in the netherlands. ofcourse it was totaly defoliated but new spears are emerging . another shocking report is that of a B. eriospatha that survived -20°C in eastern Belguim. also of this one all the leaves died but new growth is emerging!...
_________________ Kristof p
living in koekelare, west flanders, Z8b
belguim
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Tue Jul 14, 2009 7:04 pm |
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Puya
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Anyone growing the red stemmed form?
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Wed Jul 15, 2009 1:33 am |
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charliepridham
Joined: Sat Mar 29, 2008 1:42 pm Posts: 1925 Location: Cornwall
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I have just looked up Thalia genticulata and now I want one of those as well! is seed available or am I going to have to buy a plant?
_________________ Charlie, Growing climbers in Cornwall http://www.roselandhouse.co.uk
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Wed Jul 15, 2009 7:33 am |
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Puya
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Wed Jul 15, 2009 10:45 am |
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Steve in france
Joined: Mon Oct 29, 2007 7:59 pm Posts: 492 Location: Rockville , Maryland , USA
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I
I did send some seeds of the Red Stem to people on the Hardy Exotics board ( some members are here too) someone said that some seeds had sprouted .
I order new Red Stem from Stokes Tropicals every year as they are very hard to over Winter for me. I think a small division would do ok on a Sunny window ledge I've just not tried it. Mine tend to be mature and seeding at the end of the season so there are no small divisions to be taken. Sets seed pretty well here with the hot Summers and long Fall. The Red Stem comes in a lot of different shades, from pink to almost black, dark red to purple being the most common.
I grow mine in 25 gallon or bigger tubs filled with clay, I mix in time release Osmocote before planting, then I use a few Pond Tabs every week or so through the season. They normally get about 6 ft tall with flowers heading up 4 or 5 feet more. I'll try and find a pic of last years plants.
All the Best
Steve
from last year
_________________ Always looking for a lost Pup
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Wed Jul 15, 2009 12:08 pm |
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Alexander
Joined: Tue Oct 30, 2007 11:55 pm Posts: 3344 Location: Leidschendam, The Netherlands. (52 N latitude)
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_________________ Living to close to the arctic circle!
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Sat Jul 18, 2009 12:14 am |
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charliepridham
Joined: Sat Mar 29, 2008 1:42 pm Posts: 1925 Location: Cornwall
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I grow all my pond plants in varying sized bags which I make out of that weed suppressant membrane (the synthetic sort!) and filled with soil. I tend to make them up to 30Kg dry weight but above that they are difficult to handle, but I am not sure I want to give supplementary food so it sounds like my Thalia will never reach its full potential Still it looks good as it is
_________________ Charlie, Growing climbers in Cornwall http://www.roselandhouse.co.uk
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Sat Jul 18, 2009 6:43 am |
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woodruff
Joined: Tue Oct 30, 2007 7:07 pm Posts: 53
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Sat Jul 18, 2009 10:38 am |
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PeteFree
Joined: Fri May 16, 2008 2:25 pm Posts: 1139 Location: Suffolk, UK
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Sat Jul 18, 2009 1:07 pm |
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Mick C
Joined: Tue Oct 30, 2007 6:49 pm Posts: 101 Location: Sheffield UK
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Re: I
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Sun Jul 19, 2009 9:22 pm |
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Steve in france
Joined: Mon Oct 29, 2007 7:59 pm Posts: 492 Location: Rockville , Maryland , USA
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Mike
Mike as they will still be smallish by Winter you could just grow them on a windowsill. The first year we were here in the US I got a very crowded and dwarfed pot of Red Stem from a local nursery, these plants made full sized plants by the Fall. Crowded dwarfed Thalia are easy to divide and in many ways, better than large plants for dividing. So what I'm saying it if you want the plants for next year , which would seem best, then once they have a good start you can starve and crowd them. The small plants will still make new stems even when they are crowded, each new stem or clump can be broken off in the Spring when the weather warms up . As long as there are a few roots attached to the stem it will grow. I often remove all the leaves but for the new roller in the center.
If you don't remove the leaves the division may die. I've not had a division taken back to just one roller die, so it's good method, These single roller divisions take awhile to get going, that maybe to do with the Springs Temps.
Anyway this is my advise based on my experience of growing the Red Stem for the last three Summers. Your conditions will be very different so experiment
Best of Luck
Steve
_________________ Always looking for a lost Pup
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Mon Jul 20, 2009 2:23 am |
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Mick C
Joined: Tue Oct 30, 2007 6:49 pm Posts: 101 Location: Sheffield UK
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Mon Jul 20, 2009 7:23 pm |
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charliepridham
Joined: Sat Mar 29, 2008 1:42 pm Posts: 1925 Location: Cornwall
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Re: Thalia dealbata
Well 8 years on from this original post and I still have the Thalia dealbata, no picture of it now as its just too embarrassing! just 2" sticking out of the pond and one leaf, what ever these need it didn't get it here! if I remember I will try and rescue it
_________________ Charlie, Growing climbers in Cornwall http://www.roselandhouse.co.uk
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Mon Jul 31, 2017 7:14 am |
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