Could you ask Martha? Rumor has it she's into decorating.
That top, looks like brass, really has me confused. Shaped like that it is not a planter. At three feet it may be a little tall, but was it possible a base for a table?
i suppose you could add a small table top to that & use it as a plant stand. i'm wondering if it could have been something from a funeral home or a church. maybe a candle stand?