The Land of Lake Avalon Groves

Citrus is a subtropical fruit and is limited to parts of Florida that don't regularly experience freezing temperatures. The current thought on growing citrus is that the best soil for orange-growing in Florida is known as Lakeland fine sand, well-drained, and often identified as high hammock or high pineland soil. There must be adequate depth for good root development. Shallow soils of high water-holding ability are avoided.

From Dr. Malcolm Manners in fall 2018:

A  majority of the information given in this manuscript was spot on, especially when it came to the varieties of oranges and their characteristics. The manuscript mentioned both ‘Pineapple’ and ‘Valencia’ varieties, which are still very heavily used in the industry today. The manuscript did say a lot of very flattering words about the soil and climate being perfect, but they may not have stretched to truth at all. The portion of Florida that Avalon groves was located in is known for being a perfect place to grow citrus, in fact, many groves are still located in the surrounding area.

Here is a section of
a map from 1903 showing the location
of Orlando and Winter Garden.
Avalon Groves was located south of Winter Garden.