A member forwarded this link to Longwood Grows 11-Foot Chrysanthemum ECA is interested in growing a Thousand Bloom Mum. Here is a primer on what it takes as cultivated at Longwood Gardens

ECA President John Harden is proposing that ECA grow a “Thousand Bloom Chrysanthemum” to exhibit in the Seattle Area. Attached is a proposal for ECA Member review. Suggestions, feedback and comments are very desirable.

1000 bloom proposal