Comma

Comma's separate and independent and dependent clauses when separated by a FANBOY (for, and, nor, but, or, yet), items in a list, introductory phrases, and introduce or end quotes. They provide clarity to a sentence. Used incorrectly they can lead to confusion in a sentence. 

Example: April 2019 Vol 93 No. 4 of The Co-Operator

Explanation:

There should be a comma between the independent clause "Ted's greenhouse offers... "and dependent clause "...all carefully nurtured from the best. Because what comes after "and" is not an independent clause, it does not need a comma.

Revision:

Ted's Greenhouse offers the finest plants in the area, all carefully nurtured from the best seed and stock available and skillfully managed until they reach their final destination.