Here’s our Black Limbertwig that arrived bareroot 5 days ago from Trees of Antiquity. I’ve potted it in this #15 tub, using 1 part all-purpose sand and 2 parts Kelloggs Patio Mix by volume plus about a half inch of 1/4" Sequoia Orchid Bark on top to slow down moisture evaporation from the soil. Later this Spring I plan to use some of the branches as scions to top-work our White Winter Pearmain.
Grabbed one of those from @39thparallel back in 2021. Placed it in the ground last March. Seemed pretty vigorous if I recall. Mine started a bit smaller than yours 
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Nice! I did not realize it was a warm climate variety.
@39thparallel
Apples (M. domestica) were once thought to be dependent on chill hours. This was disproved 2 decades ago. Propagation nurseries have since changed their labels.
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According to Ron Joyner at Big Horse Creek Farm, his customers have grown BLT from mountain to swamp, from frigid to hot.
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Steve, based on taste reports I have considered growing this apple off-and on over the decades. I got the itch again last summer when @Luisport was sharing his new apples and ordered it.
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4/20. Today I grafted central leader scions from the potted Black Limbertwig to what is now White Winter Pearmain interstem on M-111. I had some trouble with the WWP bark being thin and tight so we’ll see how this attempt goes.
I used a Due Buoi left-handed grafting knife to trim the cuttings and then wrapped them with perforated buddy tape from One Green World. While I was at it I cut tiny slices in the tape over nodes when needed.
The tree I cut initially with a #18 saws-all blade and then used a Felco Victorinix grafting knife to work the bark. It was tough going. More often than not I was peeling wood instead of cambium.
Next I compared my scions to the prepared stump and found they were too thick and ended up trimming them more. Finally I got the scions in place and used two laps of Parafilm #12 to hold them in place. This was followed by many criss-cross sections of buddy tape across the top to protect the fresh cut wood. Afterwards I again wrapped the trunk with parafilm and then tightly with 3M Linerless Electrical Rubber Tape. I also put pieces of it across the top to block sunlight.
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BLT was one of the varieties I wanted to try here (Southern Middle TN) Zone 7a.
I got some scion wood thru trade… it was a bit on the small side but I grafted 3 and all of them are looking great. Hope I get to try one in a few years.
Does anyone know if this variety is triploid? I tried popping the anthers off of some flowers from this variety, but when I dried them out… no pollen.
BLT is diploid to best of my knowledge.