Perennials via CCE of Suffolk County, includes information on soil preparation, propagation, receommendations on easy-dare perennials, and recommended publications.
Perennial flower trials at Cornell University - photos and data on hundreds of perennial varieties from the test plots at Bluegrass Lane at Cornell university
Dividing Perennials via CCE Chemung Cooperative Extension that covers how and why to divide some common perennials.
Cornell Horticulture offers an illustrated list of their top 15 perennial-and-bulb combinations on their website at:
Last updated December 29, 2023