Show your AV growing area - natural light or artificial
7 years ago
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Growing Seedlings with Artificial Light
Comments (18)Just wanted to update you all since you were so helpful with your advice. OK - so I did a few things since two weeks ago. First, I began giving the plants 24 hours of light instead of 14-16. Because the lights only have the ability to move up and down, I was not able to rotate the lights to different locations. I did, however, begin rotating the flats in order to give any plants that were getting leggy (or in general just having trouble growing), so that they were closer to the lights. Second, I bought some mylar film and stapled it to some wood frames that I built in order to keep as much light in as possible. As you can see in the photo, the Mylar is nearly as reflective as a mirror, so I think it has been helping quite a bit. I also purchased a 90 watt LED hydroponic grow lamp. It wasn't cheap but after it first blinded me, I think it was well worth it. I began moving some of the higher growing corn over to it because the corn was getting taller than the fluorescent lights and leaning severely toward it. I'm hoping they will correct themselves with the new light directly above them. I have attached pictures of several levels of my flats and also a picture of the grow lamp that I bought....See MoreGrowing AV's...conflicting info
Comments (3)Patrickalan - I live in CT with a climate similar to yours. My southwest picture window is way too hot and bright even in winter. I shade with a lace curtain, as suggested, and that works. Try a double thickness if one panel doesn't do it. An east window is better, and you will still probably need a sheer curtain at the eastern exposure in summertime. The problem with moving plants farther back into the room is that the light falls off drastically more than a foot from the glass. Hold your hands above the plants - you don't want much direct sun, but you should be able to see your hand cast a shadow. In hot weather, you can move plants to a northern exposure, if you have a choice. Hot sun damages plants quickly, and it takes a long time for scorched plants to recover. In January, I inadvertently cooked a violet in a baggie on that bright windowsill, even with the lace curtain there. Everything else was OK because the other plants were a bit farther back. I wick all my plants, so the soil stays moist. In that situation, any slightly limp/wilted leaves are a sign my plants are too hot! Think about fluorescent lights - cool and bright on your hand, casting a shadow. That is what you are shooting for with natural light. Hope this helps. Enjoy your violets! Barbara...See MoreLight Meter: what is the correct dial setting to use for AV-s?
Comments (10)Thank you so much, jwv24! I had figured out that the 10X is best used in full sun and it picks up where the meter maxes out on the X1 setting. What I wasn't sure of was which setting is usually used for AV-s. In other words, if I use the X1 setting, and the meter registeres somewhere between 500-1000, does this indicate an adequate amount of light? I assume so because the AV-s want bright light but not direct sun - so I am always using the x1 setting. If I am on the X10 setting and the indicator is barely above 0 (say at 100)...that means we have a 100x10=1000 candles which would be the same as the needle registering at 1000 on the x1 setting - so good. It is my understanding that in order for AV-s to bloom they need a minimum of 500 foot candles ...and ideally between 1000-2000. I am already starting to figure out by the behavior of my AV-s that they probably have been getting too much light where most have been sitting, which is on a stand placed against a south-eastern window where they also receive a few hours of supplemental artificial light, with the light placed about 7-9 inches above them. I wish I was able to lift the light further above the plants but the shelves are not adjustable, so I have reduced the hours instead. Trouble is they also receive some direct afternoon sun, though most of it is filtered by some trees. All in all, it is clear they are getting too much light because as soon as AV-s spend a few weeks there, the crowns start coming in kind of small and tight, stems shorten and leaves curl. I have moved some of them on the lowest shelf of the stand where they don't receive direct light as there is no window at that level...and I have also reduced the artificial light...so we will see if they straighten up. The meter easily registers over 2000 when on the x1 setting. I also have a smaller corner stand right between an eastern and north-eastern vindow (no supplemental light here) but based on what I have noticed, these too seem to be getting more light than they would like. For a few hours, the sun still kind of shines right on them from above, even if it is just morning sun. Being in the South, all summer sun is hot enough sun, I suppose. Things will change though with the colder season coming so my eastern ad south-eastern windows may be just right by the end of September. Thank you again!...See MoreGrowing onions under artificial lighting
Comments (9)I live about 40 miles out of Lubbock. I've grown Walla Walla successfully by planting from seed in late September/early October. I always planted a nursery row very thickly and then transplanted the survivors to their proper spacing in late February/ early March. Walla Walla always matured nicely with no problems in late July-mid August. Made very big onions. However, they didn't keep well and like other long day types I've grown they tended to mature somewhat irregularly-not all at once. The most successful overwintering onion for me was Desert Sunrise from Johnny's, but it doesn't seem to be available any longer. Now I order transplants from Dixondale for late February delivery. Candy, Superstar, and Red River consistently produce big onions and sometimes store very well. Short day onions transplanted in late February/early March tend to produce fairly small onions, but I always get some Southern Belle for an early harvested onion-usually mid-June. Give it a try....See More- 7 years ago
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