officinalis “Renzels”“ IRENE
Known as- Rosemary
Grow Zone - 7 to 10
Type- Herbaceous perennial
Smith Scl. hardy? No
ht.- 1 to 1.5 ft.
Span- 1 to 3 ft.
Coloring- Violet blue
Shade/Light- Full sun
Moisture- Dry to moderate dampure
Hi/Lo Maint- Medium
Easily grown in average, arid to moderate wet, well-drained soils in full
sun. Tolerates light shade, but best performance is in full sun. Established
plants have good drought tolerance. Performs poorly in heavy clay soils.
Wet, poorly drained soils in winter are usually fatal. Sheer plants lightly
after bloom to encourage dense foliage growth. Plants need a protected
location and winter mulch in he St. Louis area where they are not reliably
winter hardy. Plants often will not survive when winter temperatures dip
below zero degrees F. May be grown in containers or hanging baskets and
This rosemary cultivar is a procumbent, spreading ground cover which is
typically grown for ornamental purposes rather than culinary ones. Features
a foliage mound from 12-18’ tall which spreads out to as much as
36’ wide. Deep violet-blue, two-lipped flowers appear in axillary
clusters in early to mid summer. Leathery, needle-like leaves to 1.25’
long are pleasantly aromatic. Leaves may be used fresh or dried for seasoning
food or dried for use in potpourris, though the species is probably better
for these purposes. This cultivar is patented (Pat. #9124) under the name
No serious insect or disease problems. Mildew and root rot may occur in
damp locations. Winter hardiness is a problem for the St. Louis area.
Ground cover for border fronts, rock gardens or herb gardens. Cascades
well over stone walls. Also effective in hanging baskets or patio containers.