I'll lower light see what happensAs yoderjac told me, make sure the light source is as close as possible. Like 2” away.
Should I be looking at the PPFD ? If so what's tv ideal value?The intensity of the light is inversely proportional to the square of the distance.
Shouldn't 300 W worth of a LED panel be enough light or do I need more ?
Apple junkie i hope I have the same success you did! They still have odd hue to them but we will
Chalk that up to being normal...
My next question is when do I move them to rootmaker 1 gal pots? I have read that the "right" timing will keep the tree growth going with no stall, but it did not say how long lol.
I'm assuming it's early but just trying to plan ahead.
The Root system are starting to look like this
Yes sir that's super helpful and very much appreciated.The general time frame to move trees from 18s to 1 gal root pruning containers is 12 to 16 weeks. Presuming you are using promix or similar professional mix in the 18s, there will be a lot of empty space in the mix as a result of the perlite and vermiculite. This space allows room for roots to grow. You will notice that when you first plant the nut, it does not take long after you water the cell before water comes dripping out of the holes in the bottom. As the roots grow and begin to fill those voids in the mix, water will infiltrate the mix less effectively. Eventually the cells will become difficult to top water. You will put water on the cell an it will sit there and eventually soak in. You will add more and it will eventually soak in. You should be watering until the water drips out of the lower holes. As you repeat this it will take longer and longer for the water to drip out.
For most trees it will take 12 to 16 weeks for this to occur. Dr. Whitcomb says that if you want to maximize growth, it is better to transplant a little on the early side than a little on the late side. When you get ready to transplant, start with your best looking tree. After watering it, you can squeeze the sides of the cell a little and then lift it out by the trunk. The entire cell should lift out with no chunks of medium falling off. There should be sufficient roots to capture all the medium in the cell. Small bits can fall of but not chunks and the root ball should stay intact. If you have chunks falling off, don't sweat it, just transplant that tree. Wait another week and try your next best looking tree. Repeat the process until chunks stop falling off.
Hope this helps,
Jack
Yes sir that's super helpful and very much appreciated.
They have been under the lights just under 6 weeks.
Currently the burr oaks are about 10-12 inches tall and
Most of the sawtooth are about 18-20 inches curious to see how high I can get the sawtooth in the first year of growth.
Most of the sawtooth are about 18-20 inches curious to see how high I can get the sawtooth in the first year of growth.
My son grew some sawtooths under lights earlier this year for a high school science experiment. After the experiment, I gradually started putting them outside before transplanting some of them to pots. I was surprised in how little root development the tallest indoor trees had. The roots on the tallest trees were less than an inch long. Approximately 8 sawtooths have been outside for almost six weeks now. They are now in full sunlight and the shorter trees (14-16") have caught the trees that were 19-20" after the experiment, but had poorly developed roots. In Jack's post above he discusses this also and the importance of caliper to support the tree in wind and also rain.
My guess is that the trees will be over 30" and possibly 36" before I transplant them this fall. Yours should probably be similar. Make sure to expose them gradually to sunlight once you move them outside. Good luck and have fun.