Why are the leaves turning ashen and brown tips on my corn plant? Its a green steam corn plant that sits in the east...

Its a green steam corn plant that sits in the east fanlight, I water it every 2 weeks its within an extra large container near three other plants that came surrounded by a funeral arrangment about 4 years ago.
Answers:    you necessitate to water it everyday within the early morning or unpunctually in the evening. if you are merely watering every 2 weeks it is not getting enough hose down. if you are watering in the hours of daylight it may be scalding the leaves.
There probably dead