How to Grow Rosemary Herbs: Planting, Care, and Harvesting

Overview

Rosemary (Rosmarinus officinalis) is an evergreen, perennial flowering shrub native to Asia and the Mediterranean. Its pine-like needles flavor a wide range of cuisines. Cold-hardy and drought-tolerant, rosemary thrives in most climates, growing 3 to 6 feet tall and up to 3 feet wide. With proper care, a rosemary shrub can live over 20 years, making it one of the easiest and most rewarding herbs to grow.

Planting Steps

Step 1: Timing and Site Selection

Plant in mid- to late spring after the last frost. Choose a spot with light, slightly sandy soil in full to partial sun, sheltered from winter winds.

Step 2: Prepare the Planting Hole

Dig a hole 1.5 times the depth and width of the nursery container. Add 0.5 to 1 inch of sharp sand to the bottom for drainage.

Step 3: Amend the Soil

Mix equal parts native soil and sharp sand. Remove the shrub from its container and set the roots in the hole.

Step 4: Backfill and Space

Fill with the soil-sand mixture, planting at the same depth as in the container. Space multiple shrubs at least 3 feet apart.

Step 5: Water Thoroughly

Soak the soil around the roots. Thereafter, water only when the soil is completely dry.

Step 6: Fertilize Monthly

Feed with an all-purpose liquid fertilizer once a month from April through October, following label instructions.

Step 7: Harvest Strategically

Pick needle leaves throughout summer. For best oil content, harvest in autumn mornings. Use fresh, or dry or freeze for later use.