A good rule of thumb is to water every two to four days. When it’s hot and dry you’ll need to water more often than when the air cools down and the soil holds more moisture. Begonia plants in full sun will also require more water than plants in shady locations.

How much water do my begonias need?

When planted in flowerbeds, begonias require about an inch of water per week to thrive. One or two light rainfalls per week are usually more than enough to provide that amount. If there is a need to water, water in the early morning.

How do you care for potted begonias?

Keep soil evenly moist, allowing it to dry only slightly between waterings. Reduce water in winter (stop watering tuberous begonias in fall). Always avoid wet or waterlogged soil. When plant is in full growth, fertilize with balanced liquid fertilizer at half strength at alternate waterings.