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Years ago I read an article writen by Jan De Graaff telling how he started with a few Lilies he tucked into the corners of his garden. He said he ended up with 75 acres of Lilies. I guess he like Lilies.
I have two questions about this. 1. Were the propagation methods back then the same as the modern used today? 2. How many bulbs would 75 acres preduce?
To answer your initial question...an acre is 43,560 sq. ft. x 75 acres = 3,267,000 square feet. Assuming one lily per square foot he'd have had 3,267,000 lilies not allowing for paths. I won't venture a guess at how many lilies, using scales and seeds, that could produce.
Both back when de Graaf was growing and hybridizing the seeds and scales would have been used for propagation just as they do now.