Grow in average, medium moisture, well-drained soil in full sun. Becomes weedy and sparse with diminished flowering performance if not grown in full sun. Does poorly in wet, poorly draining conditions. Will adapt to clay soil if properly amended. Removal of spent flower spikes during the growing season will encourage additional bloom. This hybrid is one of the least winter hardy of the buddlejas, and is only recommended for growing in USDA Zones 6-9.