Actually, mine is just common ivy, hedera helix. My experience has been that benign neglect works. Regular feeding is best, but I am expert in sporadic fertilization. Whatever you do, let it sunburn at least once a year. Frost doesn't hurt. Cut it back periodically. Simple shapes work best. But the main thing is, keep it alive. For a long time.
2 weeks ago, I left mine out in a direct-line wind that was clocked at 100mph. The beautiful pot it was in was smashed into zillions of pieces. But, I had this nanban pot. Ivy seems to make everything look good.
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The trunk resulted from keeping the ivy alive.