Scarlet Sentinel Columnar Apple Trees are not self-fertile. You will need to plant another variety to achieve fruiting.

Are any apple trees self pollinating?

The most common self-pollinating apple trees are Golden Delicious, Granny Smith, Fuji, and Gala. However, while many apple trees will self-fruit, cross-pollinating them will lead to larger and more fruit. Some good cross-pollinators for apple trees include Winter Banana, Golden Delicious, and flowering crab apples.

How do you care for a columnar apple tree?

Columnar Fruit Tree Care

Water columnar apple trees regularly; the soil should be neither soggy nor bone dry. Feed the trees regularly, using either a balanced fertilizer applied throughout the growing season, or a time-release fertilizer applied once every year.