- Founding Members (2005)
- Noto Arisa (Left on September 23, 2009)
- Ose Kaede (Left on September 30, 2006)
- Furukawa Konatsu
- Arihara Kanna (Left on January 2, 2006)
- Maeda Yuuka (Left on April 4, 2009)
- First Addition (2006)
- Second Addition (2007)
- Yutoku Ayumi (Left on November 30, 2007)
- Late Addition (2007)
- Team Ohana-batakettai!!
- Furukawa Konatsu
- Sengoku Minami (New Addition)
- Katsuta Rina (New Addition)
- Kaneko Rie (New Addition)
- Team Midories
- Team Catch the Nature
- Kitahara Sayaka (New Addition)
- Okai Asuna (New Addition)
- Sainen Mia (New Addition)
- Sano Kaori (New Addition)
- Team Genki Mori Ranger
On October 8, Tomoiki Ki wo Uetai debuted at the Morning Musume "Acchii Chikyuu wo Samasunda." Bunkasai 2005 in Yokohama in support of a foundation for ecology, PLANT A TREE PLANT LOVE. The founding members of the group were Noto Arisa, Ose Kaede, Furukawa Konatsu, Arihara Kanna, and Maeda Yuuka.
In March, The official Tomoiki Ki wo Uetai blog was opened.
In July, the HAND IN HAND support song "Minna no Ki" sung by Tomoiki Ki wo Uetai was announced.
On August 22, Tomoiki Ki wo Uetai went to do tree-planting and other activities at PLANT A TREE PLANT LOVE farm and herb garden in Yamanashiken.
On September 16, Tomoiki Ki wo Uetai performed "Minna no Ki" at the Morning Musume "Acchii Chikyuu wo Samasunda." Bunkasai 2006 in Yokohama, and were back-up dancers to Morning Musume's Kusumi Koharu. The song was released as an indies single available only at the venue of the event, as well as through Hello! Project stores and the ecological foundation PLANT A TREE PLANT LOVE website. 500 copies of "Minna no Ki" were on sale at the event
On September 23, Tomoiki Ki wo Uetai participated in activities at Atore Meguru in Tokyo
On October 7, Tomoiki Ki wo Uetai appeared at the Morning Musume "Acchii Chikyuu wo Samasunda." Bunkasai 2007 in Yokohama.
On November 30, Yutoku Ayumi graduated from Hello! Project.
On March 31, the group's activities were put on hold while the website was being renovated.
On September 23, Noto Arisa graduated from Hello Pro Egg, therefore leaving the group. Afterwards, the unit added more members and were separated into four teams. This new system was short-lived and the group became became inactive after 2009.
- [2006.09.16] Minna no Ki (みんなの木)
- [2006.12.20] Petit Best 7 (プッチベスト7) (#14 Minna no Ki)
- [2008.12.10] Hello! Project Special Unit Mega Best (#12 Minna no Ki)
- Sano Kaori was the only member who wasn't from Hello Pro Egg, she was a member of Up-Front Egg instead.