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Posts Made By:
rockyfarm
Forum:
Growing Under Lights
11-26-2023, 02:35 PM
Replies:
0
Photoperiod and Cattleya walkeriana blooming
Views:
2,921
Posted By
rockyfarm
Photoperiod and Cattleya walkeriana blooming
I've seen lots of information about natural conditions where C. walkeriana occurs, and much advice on its cultivation. Typically, it is suggested that it have seasonally adjusted photoperiod,...
Forum:
Dendrobium Alliance
11-18-2023, 04:47 PM
Replies:
3
Dendrobium aggregatum max. night temperature for blooming
Views:
1,167
Posted By
rockyfarm
My grow room runs 76 to 78 degrees days and I...
My grow room runs 76 to 78 degrees days and I pull it down to 60 at night. The photoperiod may indeed be too high for blooming; I've read that most orchids are not sensitive to light duration, but it...
Forum:
Dendrobium Alliance
11-18-2023, 09:05 AM
Replies:
3
Dendrobium aggregatum max. night temperature for blooming
Views:
1,167
Posted By
rockyfarm
Dendrobium aggregatum max. night temperature for blooming
I have several divisions of a thriving D. aggregatum that I'm trying to bloom. They're under lights and have good leaf color (PPFD around 250 for 14 hours). My difficulty is the winter night...
Forum:
Growing Under Lights
07-17-2023, 12:03 PM
Replies:
76
My Basement Greenhouse
Views:
29,802
Posted By
rockyfarm
Pretty neat!
Pretty neat!
Forum:
Beginner Discussion
07-16-2023, 05:45 PM
Replies:
13
Fall Care for Dendrobiums
Views:
4,856
Posted By
rockyfarm
How long is a Dendrobium 'winter rest'?
It's not too convenient to take one or two orchids from a collection and give them very different temperature conditions. I'm thinking of Dendrobium loddegesii in particular, with the need for a...
Forum:
Growing Under Lights
07-16-2023, 02:53 PM
Replies:
76
My Basement Greenhouse
Views:
29,802
Posted By
rockyfarm
Do you have any problems with the high (80%)...
Do you have any problems with the high (80%) humidity causing condensation on walls in the winter? That's limiting me in North Carolina. I may have to make a room within a room to avoid outside walls.
Forum:
Growing Under Lights
07-10-2023, 05:16 PM
Replies:
32
Supplemental light: PPFD vs Foot Candles
Views:
12,711
Posted By
rockyfarm
Sounds challenging. I am lucky to be growing in a...
Sounds challenging. I am lucky to be growing in a basement up north; mid-July it is still 65F (below grade). I've built a grow-room within this basement, fully lined with poly and with foam panel...
Forum:
Growing Under Lights
07-10-2023, 03:06 PM
Replies:
32
Supplemental light: PPFD vs Foot Candles
Views:
12,711
Posted By
rockyfarm
Ray, I agree that the original species are...
Ray, I agree that the original species are adapted to the conditions they were collected from. I'm growing mostly hybrids (that might not even survive in their source sites), and I'm growing them in...
Forum:
Growing Under Lights
07-10-2023, 01:54 PM
Replies:
32
Supplemental light: PPFD vs Foot Candles
Views:
12,711
Posted By
rockyfarm
I like the idea of integrating the PPFD value(s)...
I like the idea of integrating the PPFD value(s) over time (DLI) so I can manage daylength, under lights for optimum plant 'satisfaction'. I'm interested in cutting back the light intensities a bit...
Forum:
Growing Under Lights
07-10-2023, 12:46 PM
Replies:
32
Supplemental light: PPFD vs Foot Candles
Views:
12,711
Posted By
rockyfarm
Of course the plants are the ultimate measure!...
Of course the plants are the ultimate measure! But they are slow to show symptoms of poor growing conditions, unless the environment is really severely 'off' and damage has been done. I grow under...
Forum:
Growing Under Lights
07-10-2023, 07:59 AM
Replies:
32
Supplemental light: PPFD vs Foot Candles
Views:
12,711
Posted By
rockyfarm
Thanks for your reply. With regard to the PAR...
Thanks for your reply. With regard to the PAR meter; the output number might look the same for a source heavy with green light as for one uniformly distributed from blue through red, or even with red...
Forum:
Growing Under Lights
07-09-2023, 06:35 PM
Replies:
32
Supplemental light: PPFD vs Foot Candles
Views:
12,711
Posted By
rockyfarm
How green is my orchid
After digging around in the lux/ppfd/dli information online, I've decided to modernize my growing conditions with a new PAR meter. I'm a little unclear on whether this meter will process all energy...
Forum:
Beginner Discussion
12-31-2016, 09:47 AM
Replies:
9
Winter rest and watering
Views:
3,344
Posted By
rockyfarm
If we are growing a mix of orchid species and...
If we are growing a mix of orchid species and hybrids we probably are trying to provide conditions they have in common. If we use 'intermediate' temperatures (60 degrees night minimum), it sounds...
Forum:
Advanced Discussion
12-30-2016, 04:54 PM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
Exactly; we grow orchids for our pleasure, not...
Exactly; we grow orchids for our pleasure, not industrially. The lights I currently use are 100 watt equivalent LEDS, warm and cool white, so they are not blinding (especially since they are in...
Forum:
Advanced Discussion
12-30-2016, 08:33 AM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
Very interesting. My original question was how...
Very interesting. My original question was how short a time could I supply 'winter' light, and temperatures for that matter. Your far-north winter had very long nights, but these were still over a...
Forum:
Advanced Discussion
12-29-2016, 09:20 AM
Replies:
8
Lophiaris or Trichocentrum Stramineum basic care
Views:
3,360
Posted By
rockyfarm
I have Lophiaris (Trichocentrum) nana, and it has...
I have Lophiaris (Trichocentrum) nana, and it has the reddest leaves I've seen on an orchid; not apparently damaged but dark greenish red. It had been potted in sphagnum (soggy), and so all roots are...
Forum:
Advanced Discussion
12-28-2016, 04:38 PM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
The seasons are what they are, but they don't...
The seasons are what they are, but they don't have to be. Witness growing southern hemisphere plants in the north where they adapt to our seasons. Plants have capabilities to perform 'better' where...
Forum:
Advanced Discussion
12-28-2016, 03:49 PM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
Growing under lights is fun, especially in...
Growing under lights is fun, especially in winter! Love to see growth when everything is gray and brown outdoors.
Forum:
Advanced Discussion
12-28-2016, 09:22 AM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
Thanks for the informative answers. Except for a...
Thanks for the informative answers. Except for a few plants I keep at a window - which gives me the local short days and cool temperatures all day in winter, I have my collection under stricter...
Forum:
Advanced Discussion
12-27-2016, 03:14 PM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
Two months sounds reasonable. I read that 4-5...
Two months sounds reasonable. I read that 4-5 weeks of cooling served to initiate flowering in Phalaenopsis, regardless of photoperiod. Any other bits of information out there?
Forum:
Advanced Discussion
12-27-2016, 03:02 PM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
Not so easy for multi-generic hybrids! Still,...
Not so easy for multi-generic hybrids! Still, that's good guidance in general, but is rather conservative. Plants can respond to an early Spring by leafing out early, although they may get caught by...
Forum:
Advanced Discussion
12-27-2016, 12:32 PM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
But - since we can play 'Master of the World' in...
But - since we can play 'Master of the World' in the totally artificial environment of a grow room, I'd like to supply conditions for maximizing growth without inhibiting flowering. Growing ...
Forum:
Advanced Discussion
12-27-2016, 09:14 AM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
I am growing Cattleya, Phalaenopsis,...
I am growing Cattleya, Phalaenopsis, Paphiopedalum, Phragmites, Dendrobium - and some others. As with most of us, it is a mixed collection.
I read that a period of reduced temperature may...
Forum:
Advanced Discussion
12-27-2016, 08:41 AM
Replies:
31
Photoperiod - what is the appropriate 'winter'?
Views:
3,837
Posted By
rockyfarm
Photoperiod - what is the appropriate 'winter'?
Growing under lights, it is feasible to control intensity and duration (and, of course, temperature and humidity, as well as nutrient supplies). One can reduce winter (cooler, dryer, shorter days) to...
Forum:
Dendrobium Alliance
12-26-2016, 01:13 PM
Replies:
8
Dieback of new shoots - Den. Maiden Charlotte
Views:
1,093
Posted By
rockyfarm
Update: the plant has put out a number of new...
Update: the plant has put out a number of new shoots, some are fringed with whorls of pointed 'leaflets', others sport blocky pseudobulbs with somewhat more normal leaves. But - the plant is finally...
Showing results 1 to 25 of 47
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