Welcome to the Summerwinds Monrovia resources page. We want you to feel confident and knowledgeable about selling our plants at your garden center.

We have been pioneers and craftsmen in the art of growing plants for nearly 100 years. Since our founding in Southern California by Harry E. Rosedale, Sr. in 1926, we have been absolutely dedicated and obsessed with quality. 

Quality starts by selecting the very best varieties of plants to grow, working with breeders from around the world to test and trial plants before we deem them suitable for your garden center. From our custom soil mixes developed to ensure healthy roots to the care we take in pruning and shaping our plants as they grow, Monrovia is also focused on giving every plant what it needs to thrive.  Below you’ll find helpful information to use in serving your customer.