Full Sun
Low
Plants may be cut back hard in summer if foliage sprawls or becomes unkempt. If grown in borders, division may be needed every 2-3 years to maintain robustness. Prompt deadheading of spent flower stalks encourages additional bloom and prevents any unwanted self-seeding.1
A full sun position will ensure your plant thrives and remember to apply water fairly sparingly.By our calculations, you should look at sowing Sterntaler about 49 days before your last frost date.