Final answer:
The palm-like tree you have been growing is most likely a Cycad. Cycads have large, stiff leaves in fronds and produce new plants each year. Popular species include the Sago Palm and the Encephalartos genus.
Step-by-step explanation:
The palm-like tree you have been growing is most likely a Cycad. Cycads are similar to palms in appearance and have large, stiff leaves in fronds. They can grow tall and produce new plants each year. They are also known for their underground stems called rhizomes.
While I cannot say for certain without more information, Cycads fit the description you provided and are commonly grown as ornamental plants.
Some popular species of Cycads include the Sago Palm (Cycas revoluta) and the Encephalartos genus.