I have some COB lamps and the color looks excellent. 

Mounting the LEDs on the ceiling is going to look nice.  But don't small leds need to be fairly close to the plants?  Or it doesnt matter because there enough of them to put enough light out at long distances?  When you are talking about 400kwh of light, it may be way easier to just use 1000watt MH and HPS lamps hanging from the ceiling like they do in large wharehouses.  I havent looked into CMH bulbs much but it seemed like they have really nice color and more efficient than regular MH.  Those would be awesome in 1000watt bulbs. 

You can go for inspiration to Germany.
"The enormous dome was originally built as an airship hangar for the German company CargoLifter AG. The steel barrel-bowl construction was made to measure for the production and operation of heavy lift airship, and is optimized for volume and aerodynamic form. Built by a subsidiary of Siemens, SIAT, the building's giant dimensions posed an architectural challenge. The roof's surface measures 70,000 m² and is able to withstand the significant mass of rain and snow that falls on it. The heating system is able to maintain constant temperatures in the over 5 million m³ of air. The building was constructed using almost 14,000 tons of steel...
the air temperature is 25°C and humidity a pleasant 40 - 60%, perfect conditions for plants from all over the world. There is also under-floor heating in the Lagoon and the Tropical Sea area, so visitors do not get cold feet.
The 7,000 m³ of water in the Tropical Sea (28°C) and Lagoon (32°C) are cleaned using the latest ozone filter technology. This makes the water quality equivalent to that of drinking water. The pools themselves are constructed of stainless steel for optimum hygiene. The water has a maximum depth of 1.35 metres."

Tropical Islands project near Berlin.
https://www.tropical-islands.de/en/

What do they do for supplemental lighting during winter?  It seems like there wouldn't be sufficient lighting in DE in winter to keep tropicals happy.

Its the sap of the tree like Jack said. 

The black sooty stuff looks like bug secretion but its hard to tell from the pic for sure. 

I hosed my infected tree off 3 or 4 times and its looking clean now.   

How tall does the GEM variety reach at maturity? I can't seem to find this info in any published material.

They are supposed to stay small around 15ft.  Can probably be kept smaller with pruning.

Its already past the season for mexicola in southern california.  Bacon and Fuerte are in season.

Hi Brad, I have grafted loguats at this time of year before with great success just cut your scions and cut off leaves and and blooms. I used scion wood that were no showing blooms. My new way of grafting loquats is grafting them onto quince which is supposed to dwarf them I have one tree now on quince r.s. that is about 4 years old and only about 2-1/2' tall. i wrapped my scions with parafilm too!
The best to your grafting.

Thank you very much Scott.  There doesn't appear to be any new blooms.  The trees bloomed and set fruit a few months ago.  Fruits are already sized up nicely.

I've got a mcbeth tree and a big jim.  If you or anyone has any favorite cultivars and would like to trade pieces let me know. 

Here some pics of trees planted last summer.  They are starting to grow nicely.  All this rain should equal a great avocado year. 

Kahaluu, I actually just dug this one up and moved it a few weeks ago.  It didnt seem to care at all.



Sharwil


Green gold



Daily11



I planted 10 reed seedlings.  Heres 3 of them.  They will be allowed to grow and fruit.




Mexicola Grande grafted late summer took off.  Seems really happy here and tolerant of the heat.



Malama


Ardith



Nabal

I posted in the temperate sale section with no response.  Just posting it here in case people are interested but missed it.  Im planning to prune my trees this weekend.

Have all kinds of low chill peach, nectarine, plum, apricots, cherry, and interspecifics. 

Send me a message before the weekend if you want scions. 

5$ per scion.

We just ate the last one. Oily and well-flavored. Interestingly my wife considers the skin to be thin, but it’s so hard and brittle I can’t call it thin!

Looks nice

Peach, plum, apricots, nectarines, interspecifics, cherry...  All are low chill types 300hrs or less. 

5$ per scion.

Peaches:
August pride
Eva's pride
May pride
Mid pride
Florida prince
Tropic Snow

I have many more types of stone fruit, send a PM if there is something you want.