Sage and cucumbers are better kept apart. Next to each other, the plants compete for resources like space, nutrients, and water. The herb grows fast and can seize its neighbor’s property. However, cucumber vines can also dominate the area, leaving little room for the herb to flourish. Sage needs lots of sunlight, and cucumbers can block light and airflow, potentially killing out the sage plants.
Their different water needs also create complications. Sage requires less water than the fruit. It can drown in the excess from the cucumbers. Plus, the aromatic’s strong fragrance encroaches on cucumbers, changing the taste of the fruit.
Your garden can still house this herb and fruit, but they should be as far apart as possible. If space is limited, try planting the sage in a flower pot. It makes a terrific green spice for an indoor kitchen garden. Leave your cucumbers outside. They can still benefit from a companion.