meet the team


Ariel Stone
Volunteer Manager
(602) 689-3749 |

Ariel is an Arizona native, having grown up in downtown Phoenix. She graduated from ASU with a BS in Nonprofit Leadership and Management, and has volunteered for nonprofits since a young age. She volunteered with Trees Matter while a freshman at ASU and is glad to be back as part of the team! Ariel values the importance of trees and other plants native to the desert southwest, and is particularly interested in ensuring that they thrive in a rapidly growing urban setting. While she’s excited how fast Phoenix has been growing both culturally and economically in recent years, she believes Trees Matter can have impact on making sure this growth happens in the most sustainable way. She loves traveling, drawing, yoga, and live music. Ariel’s favorite tree is the Parkinsonia, or Palo Verde. 

Brittany Rinear

Remote Communications Assistant

Brittany has an extensive background in customer service, and is passionate about supporting our organization. After graduating from McClintock High School in Tempe, she lived in Portland, OR, and Santa Rosa, CA, where she developed a deep appreciation for ocean winds and cypress trees. Brittany is now a visual artist, creating and selling abstract paintings with various mediums, and is a ceramics student at Phoenix Center for the Arts. Her passion for gardening is mostly limited to indoor plants, especially in the summer! After providing occasional support for past projects, she is excited to move into a more substantial role at Trees Matter!

Paulina Vu
Program Manager
(602) 618-5529 |

Paulina was born in Arizona, and recently graduated with a concurrent degree in Sustainability and Global Studies. Her interest in sustainability in a local and global stage has led her to various projects, volunteering, and internships with organizations such as the Gaia Association, The International Rescue Committee, and the Arizona Department of Environmental Quality. Paulina is passionate about community engagement, and is excited to work towards a healthier, happier Phoenix. While at ASU, she was an intern for Trees Matter and is thrilled to join the team once again. She has always been in awe of nature and loves to hike, take photos, travel, and board games in her free time. Her favorite tree is the Hong Kong Orchid.

Kenny Tjong
Fall 2018 Events Intern

Kenny was born and raised in Jakarta, Indonesia. He came to Arizona to pursue his bachelor’s degree and is currently in his last semester at ASU, studying Interdisciplinary Studies with concentrations in Engineering Management and Mathematics. Apart from English and his native Indonesian, he can also speak Mandarin Chinese and is learning Korean. He likes cooking as a hobby because it’s fun and creative. During his time in the valley, he has quickly realized that tree canopy is very much needed here to counter the heat. He sees the importance of trees and how they can positively impact the world, which brought him to Trees Matter. His future goal is to create his own company that runs on zero waste. He looks forward to learning about everything from event planning and nonprofits, to edible trees he can incorporate into his cooking!

Aimee Esposito
Executive Director
(602) 689-2896 |

Aimee is a native Phoenician, growing up next to Piestewa Park. She has always had an appreciation for both the function and beauty of the desert environment. Aimee attended ASU where she learned the importance of bridging fields, receiving a BS in Geography and a BA in English Literature. Later Aimee ventured to Monterey, California where she spent two years earning a Master's degree in International Environmental Policy. Aimee learned a range of subjects from ecosystem valuations to grant writing and spent a summer in Peru to film for the Andean Alliance of Sustainable Development who helps provide easy to make green houses for indigenous communities and schools. She values the importance of direct impact, especially at a city level. Aimee’s favorite tree is the Prosopis juliflora, or the Native Mesquite.

Fall 2018 Events Intern

Randallyn is a senior at ASU and will be graduating in the spring with a bachelor's degree in Communication. She was born and raised in Southern California, and decided to come to Arizona for the warmer weather. Something that stood out to her was the lack of trees throughout the Valley and is glad to work with an organization that will help with that! Upon graduation she hopes to move back home to work with non-profits there. She's excited to join Trees Matter and learn about non-profits from a hands-on perspective and to apply what she's learned as a communication major to various events and projects! In her free time she enjoys going to concerts, learning about health and wellness, trying new food places, cooking, baking, and anything food-related. She's especially excited to learn about the edible trees of the Valley! Randallyn's favorite tree is the California fan palm, as it reminds her of home!

Ronnie Pedersen
Fall Events Intern

Ronnie Pedersen was born and raised in Glendale, Arizona and is currently a sophomore at ASU, pursuing a degree in Sustainability and Business Entrepreneurship and working towards a certificate in International Business. Previously, Ronnie worked as a residential Vice President for Barrett, The Honors College at ASU, Vice President of the Barrett Sustainability Club, and also served as the entertainment chair for the NACURH 2018 international leadership conference. In his free time, Ronnie enjoys rock climbing and hiking with friends, or playing volleyball with his intramural team at ASU. His interest in combining Sustainability and business drives his dream to implement the efficiency of 1st world waste management into 3rd world countries with the goal of increasing economic prosperity, public health, and environmental protection within the selected communities. He hopes his internship at Trees Matter will give him experience with non-profits and implementation of sustainable solutions into large communities. He is excited to create impactful change in the Valley through an increased tree canopy. Ronnie loves the Palo Verde tree for its beauty and wonderful scent!

The Office

734 W. Polk St. Phoenix, AZ 85007

Mailing Address

PO Box 2648 Phoenix, AZ 85002

Our office is on the NW corner of McKinley Street & 1st Avenue, just south of Roosevelt. We are in the south building of The McKinley Club. Feel free to ask around since we work in a co-sharing space, we all know each other. We look forward to seeing you soon!

If you want to mail something to us please use our mailing address listed on the right.

Copyright © 2019 Trees Matter. All Rights Reserved. Support | Contact | Employment (602) 689-2896 | 734 W. Polk St, Phoenix, AZ 85007