As far as I can tell we missed posting this in time for the conventions that took place this past weekend, while others are still upcoming. The release went out before the weekend and talks about all of them in a future tense for that reason.
From
Green Party US:
Spring is the time for annual conventions of many of our affiliated State & Local Green Parties. A partial list of upcoming meetings is listed here, including New York, Arizona, Massachusetts, Pennsylvania, South Carolina, Maine, and California.
Conventions have already been held in New Jersey & Illinois. Our hardy Greens in Maine held their annual meeting in January.
Campaign School and Spring Nominating Convention Syracuse, New York
Saturday and Sunday, May 16 & 17th
details
Arizona
Saturday, May 30 in Flagstaff
The Arizona Green Party (AZGP) invites all registered Greens & guests to attend our next General Membership meeting & 25th Anniversary Celebration!
details
Massachusetts
Saturday, May 30 in Worcester
Our theme, Healing Our Communities, is intended to set the tone of positive engagement and particularly encouraging and empowering people to run for elected office.
details
Pennsylvania
Saturday, May 30 in Swarthmore
This meeting of the GPPA State Committee is open to all Greens
from Pennsylvania.
details
South Carolina
Sunday, May 31 in Columbia
The South Carolina Green Party is excited to announce its 2015 State Convention, to be held on Sunday, May 31st, from 12:30 to 3:00 PM in the banquet room of the Arabesque Restaurant, 2930 Devine Street, Columbia, SC 29205. If needed, overnight accommodations ($50) are available at the Country Hearth Inn, 621 South Assembly Street, Columbia, SC 29201.
The main agenda items are the discussion of priorities for the 2016 elections and the election of Steering Committee members.
details
New York
Saturday, June 6 in New Paltz
On June 6, the Green Party of New York State Committee is hosting our Spring SC meeting in the beautiful village of New Paltz. Greens from across the state are invited to join us for what we hope will be a first step towards an annual meeting for Greens that excites, builds our capacities to organize, grow and run effective campaigns and strengthens ties between the state party, county organizations, and Green Party activists.
details
Maine – Lakes Region Green Gathering 2015
Saturday, June 6 in Casco
Clearly, growing the Green Party means running more candidates and winning more elections. You’re on board. But how do you pick a race to run in? Once you’ve identified a seat to run for, how do you structure your campaign? What paperwork needs to be filed? How much time are we talking here? Not up for running? What are the other roles you might play in a campaign?
details
California
June 27 – 28 in San Jose
General Assembly of the Green Party of California, June 27-28 in San Jose
A number of California Greens will be participating and attending the US Social Forum meeting on June 25-26, also in San Jose
details
Green Party Watch comments also note:
“NIKHILANANDA says: The Annual State Convention of the Green Party of Hawai`i (GPH) will be held Saturday, May 30th, 2015 at the Bonk residence in Kamuela off Hwy 11, 64-712 Kakanihia Road. The meeting begins promptly at 10 AM. The potluck begins at noon at we will adjourn the meeting at 2 PM. We hope to see you there! Call Bob Jacobson at 808-966-8831 if you have questions.” “anónima says: The Green Party of New Mexico had its annual meeting on April 25, 2015.” “kat swift says: TX
May 15, 2015 at 4:17 pm
May 16, 2015 at 7:01 am
May 17, 2015 at 10:29 pm
June 6&7
Bethlehem Center
Fort Worth”
Although we haven’t been able to cover these Green Party conventions nearly as well as the Libertarian conventions, if any of our readers are able to cover them, we would welcome contamporaneous or after the fact reporting in the comments or as article submission(s).

via email:
“In addition to the Green Party state conventions you mentioned in this article (https://independentpoliticalreport.com/2015/06/green-party-2015-state-conventions-in-ny-az-ma-pa-sc-me-ca/), the Kentucky Green Party will be meeting at Lexington Public Library, Beaumont Branch at 11 am on August 8th:
https://www.facebook.com/events/770980709687642/
https://www.facebook.com/KentuckyGreenParty/photos/a.10151556778651227.1073741827.287558616226/10152788767421227/?type=1
“)