Grow a columnar apple tree in small spaces ... (psst—here’s how to find your plant zone). They’re upright dwarf fruit trees that will grow up to 15 feet tall. Northern gardeners, this ...
the dwarf version of this tree is perfect for small gardens. 'Varieties like 'Victoria' or 'Greengage' are popular columnar plums,' Mark says. 'These trees have a narrow, upright growth habit ...