Persian Ironwood Vanessa Akin to its parent Parrotia persica, the Vanessa grows as a tall narrow small tree, with equally stunning autumn colour though more pinks and yellows, and it's far more suited to smaller gardens. Also takes quite well to pruning, Site: Requires shelter from windSoil: any, not too dryPosition: Full sunSeason of Interest: Incomparable autumn colourHardiness: HardyHeight: 33ft (10m) Spread: 9ft (3m)