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Your Guide to Growing and Caring for Rosemary

Known for its versatility and wide range of uses, rosemary has become a staple in kitchens everywhere. From culinary applications to health benefits, this low-maintenance plant is a valuable addition to any garden, whether you’re a novice or an experienced gardener.

Depending on the variety, rosemary can exhibit different growth habits, from creeping to mounding to upright forms. It can grow up to four feet tall and spread four to five feet wide when planted in the ground, but will stay small when pruned and planted in small pots. The rosemary plant produces small, understated blooms in shades of blue, pink or white.

Naturally drought-tolerant, rosemary requires minimal maintenance. If shaped into topiary form, it will need only occasional pruning. As an evergreen plant, it can grow into a shrub over time, making it a must-have for any garden!

When to Plant

It’s best to plant rosemary after the last frost in the spring. Wait until the weather and the soil have warmed up. Rosemary plants grown in containers can be planted indoors at any time of the year, but it does become dormant in the winter.

Where to Plant

Rosemary will thrive when planted in well-draining soil and a sunny area that gets at least 6 hours of direct sunlight every day. Good companion plants include beans, carrots, spinach and cruciferous vegetables (i.e. Brussels sprouts, broccoli, cauliflower, cabbage and kale), beans, carrots and spinach.

How to Plant

Rosemary shrubs should be planted 2 to 3 feet apart from each other to allow space for them to spread out. Plant seedlings and nursery plants at the same depth as in their previous container. Seeds should be just barely covered with soil.

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  • Light Requirements: Rosemary thrives in full sunlight once it’s established, needing at least 6-8 hours of direct light each day. If you’re growing it indoors, place it near a window or area where it can get plenty of natural light every day. 
  • Soil Type: Rosemary prefers well-drained, sandy or loamy soil with a slightly acidic to neutral pH. Good drainage is crucial to prevent root rot, so choose a potting mix designed for improved soil drainage or adding sand to the soil. You can apply a balanced, water-soluble fertilizer every 4-6 weeks during the growing season to encourage healthy growth. Avoid over-fertilizing, as this can lead to excessive foliage with reduced flavor.
  • Watering: Water rosemary thoroughly but allow the soil to dry out between waterings. Overwatering can lead to root rot, so it’s better to err on the side of underwatering. During winter, reduce the watering frequency even further. 
  • Temperature: Rosemary prefers warmer temperatures and thrives in a range of 60-80°F (16-27°C). If you live in a colder climate, bring your rosemary indoors during the winter months or cover it with a frost cloth if it sits outside.
  • Maintenance: Regularly prune your rosemary to promote bushier growth and prevent it from becoming leggy. Pruning also helps to improve air circulation around the plant, reducing the risk of fungal infections.

Rosemary Popular Uses

  • Rosemary leaves are commonly used to season chicken, pork, veal and lamb dishes. They can also enhance the flavors in stews, butters, jams and sauces.
  • The oil is used in perfumes and toiletries, as well as incense.
  • The leaves and flowers are used in sachets, potpourri and wreaths.
  • Fresh cuttings can be used in flower arrangements for its beauty and scent.
  • A variety known as BBQ Rosemary can be used for grilling by stripping off the leaves and using the stem as a skewer.

Rosemary Fun Facts

  • Rosemary originated from the mint family and was first found in Portugal and Spain.
  • Christians call rosemary the “holy herb” because, according to Spanish legend, Mary dropped her cloak on a rosemary bush on the trip to Egypt. When she did so, the blooms changed from white to blue.
  • Shakespeare mentions rosemary in Hamlet. He calls it a symbol of remembrance and fidelity.
  • In Old English tradition, which remains popular across Europe, brides give rosemary to their grooms on the morning of their wedding to symbolize love, wisdom and loyalty. ​​Brides also wear rosemary as a halo in place of a veil for the same symbolic reasons. Additionally, rosemary is often used in wreaths at funerals.
  • Ancient Greeks and Romans believed it helped to improve memory and concentration.