You might buy it because it is rust resistant, but you fall in love with it for its purple foliage, arching habit, and copious bloom — pale yellow flowers in summer that are delicious against the purple leaves. A shrubby St. John’s wort, to 3-6 ft tall, first introduced by Heronswood Nursery. For sun or part shade in hottest climates with average summer water. Evergreen in upper USDA zone 8 and frost hardy in zone 6.

ST. JOHN’S WORT

Hypericaceae