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Originally Posted by Bluesmaster
Hi Doc.
Saw some nice snowdrops today at Salmsbury Hall, theres a rhododendron in bloom as you drive in?
I remember rhododendrons when i was a kid in our local park but they were never blooming in February?
Any tip's for the indoor gardeners? Sodium or Metal Halide? a friend of mine has asked me if you can shed some lite on the matter?
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" shed some lite" ha ha ha - no pun intended ???
Now theres something I havent been asked about for a few years , it really depends on the grower themselves.
I prefer the natural light that wont run up my electricity bill (keeps the wife happy!)
But some will use Metal Halide over Sodium because (MH) has more of a balanced spectrum of colour where Sodium has a red/orange tinge from it, now in some cases it can have different effects to certain plants But some gardeners will use Sodium for its low useage of electric.
In the winter months some people will use BOTH lamps as the hours of light are far less and skies are more greyer.
The only thing wrong with a sodium lamp to me is that you can have 'tall' plants from them where as plants grown under a 'MH' lamp dont as they have a more normal colour coming from them, I would use (if forced) a 'MH' lamp and would use them on propagation - but thats just me ,
I know that you can buy a 'conversion bulb' where you can switch from Sodium to 'MH' and back again so you can have the best of both worlds.
Hope I have been some help to you, if not just ask !
Thanks