Lamiastrum Yellow Archangel Description Fast-growing, some say invasive herbaceous ground-cover. Small yellow flowers appear from April to June. Grows well in a variety of soil types from sandy to heavy clay and from acid to alkaline. Can grow in full shade and full sun. Sizes & Prices All Yellow Archangel Characteristics Hardiness Zone: 3-9 Light requirements: Sun/Shade Height: 12-16" Native: No Sizes & Prices Size: 2 Yr $11.98 Other Information Yellow Archangel Lamiastrum Zone: 3-9 Sun/Shade HT: 12-16"