How to Water Hypericum × dummeri 'Peter Dummer'?
Water moderately, allowing the top few inches of soil to dry between waterings.

Hypericum × dummeri 'Peter Dummer' · Hypericum × dummeri 'Peter Dummer'
Grow in moderately fertile to poor, moist but well-drained soil in sun or partial shade.
Water moderately, allowing the top few inches of soil to dry between waterings.