More images for Yucca desmetiana. https://www.google.com/search?client=firefox-b-1&tbs=simg:CAESqAIJ1egurdKRFiManAILEKjU2AQaBAgVCAQMCxCwjKcIGmIKYAgDEijKFs0W6QvLFtIL0RbZC9cL1xbYC48ikCK7LrMy2DeOIts30incN5wgGjBM7gTiphIIQilnzOhYBjTmfqUSAmu7AwiKOxtqOBZlm75HVGl4j0wBs80izwazqzUgBAwLEI6u_1ggaCgoICAESBODYJPcMCxCd7cEJGocBCh0KCmhvdXNlcGxhbnTapYj2AwsKCS9tLzAzZnA0MQocCglmbG93ZXJwb3TapYj2AwsKCS9tLzBmbTN6aAoWCgRsZWFm2qWI9gMKCggvbS8wOXQ0OQoYCgVncmFzc9qliPYDCwoJL20vMDh0OWNfChYKBGhlcmLapYj2AwoKCC9tLzAzZ3ExDA&q=%E3%83%A6%E3%83%83%E3%82%AB+%E3%83%87%E3%82%B9+%E3%83%A1%E3%83%86%E3%82%A3+%E3%82%A2%E3%83%BC%E3%83%8A&tbm=isch&sa=X&ved=0ahUKEwjfttz96YjZAhVIRqwKHY1_B2QQsw4INA&biw=1366&bih=617#imgrc=_

I can’t see the base of the plant to be certain. I’m taking a guess only, maybe soft leaved yucca (Yucca desmetiana) (?). When it blooms and you still don’t know make new post with flowers photo. Check out these included links for Y. desmetiana. Best wishes! https://www.flickr.com/photos/tony_rodd/6986927923/