Cercidiphyllum Japonicum Katsura Tree9 cm Pot x 2. Hardy tree. Don't be afraid of growing trees in your garden; they aren't all great big oaks and cedars. The Katsura tree certainly isn't. Enjoy it's attractive foliage and see if you can decide what the leaves smell of - is it toffee apple and candy floss. Just mix a few bags of Ericaceous compost into the soil on planting and it will virtually take care of itself. Hardy tree Ideal for borders. Height: to 10m.