Rosemary likes dry to average, well-drained soil. Space plants 24-36” apart. It prefers a sheltered position such as on the south or southwest side of a wall or foundation. It tolerates part shade, but the flavor of the plant may be weakened if it doesn’t get enough sun. Easy to grow, it does not require extra watering. Plant height is 24-60”.
In the summer, fertilize plants after the flowers have appeared. Keep trimmed for a more lush appearance. Prune the plants after flowering. As with all varieties of Rosemary, it performs very well in pots and may be brought indoors for winter use. Drought tolerant.
‘Arp’ is regarded as the hardiest Rosemary cultivar, supposedly to -10 degrees F. Originally found in Arp, Texas. It has thick, resinous, gray-green leaves, a faint lemony scent and an open growth habit. This evergreen shrub is dense, bushy, upright and aromatic. Widely used in cooking, especially Italian cuisine.
Arp leaves are dark green and leathery, up to 2 inches in length and they sport small, edible blue flowers in whorls, up to 1/2 in long. Rosemary is an excellent choice for making topiaries. It responds well to trimming and can be shaped like an evergreen bush. A wonderful companion plant with roses.
Rosemary may be used dry or fresh. For fresh use, pick early in the morning for the highest oil content. Leaves, tips and flowers can all be used. Chop finely or tie stems together and remove before serving to infuse flavor.
For longer term storage, cut whole stems and tie bunches together in small batches. Hang in a dry location out of the sun that will receive plenty of air. Rosemary leaves may also be dried on screens in a dry, shady location. Simply strip the leaves from the stems and scatter on drying screens. Stir occasionally to help even drying. Do not use heat to dry rosemary as the oils can be volatile. Store in air-tight containers in a dry, dark location.
Rosemary may also be frozen using the ice cube method in water or olive oil.