Common Rosemary Pests and Diseases Rosemary is a generally healthy plant that can tolerate a variety of insects and pests. Furthermore, rosemary is susceptible to many sorts of root rot, which is why it's critical to have the soil drain correctly and to allow it to dry out between waterings. The tips of the rosemary leaves will turn red when they fall into disuse after being pulled from the stem. This is called "desiccating" and it helps preserve the color of the herb. However, if you plan to keep them for decorative purposes, it's best to cut them back every 6-12 months.
Rosemary is a hardy perennial that can be grown as a single specimen or in a border. It needs full sun and well-drained soil that is rich in magnesium and phosphorus. Maintain an average temperature of 55 degrees F during winter dormancy and 70 degrees F during summer growing season. Water regularly but don't overdo it; let the soil get dry out between showers.
Rosemary is widely used as a culinary and fragrance herb. It adds a spicy note to dishes such as lamb, chicken, and fish. The leaves can also be used as a replacement for regular mint in recipes. As a garden addition, rosemary makes an attractive ground cover with blue or purple flowers in early spring.
Rosemary is sensitive to frost.
If the rosemary is brittle and brown after the winter, it may have suffered from root rot and is likely dead (unless there is some healthy growth from which to take cuttings for propagation). Because of the cold, moist soils, rosemary is most susceptible to fungal disease during the winter months. Dead plants will not resprout when planted in soil; instead, they will lie dormant until spring comes around again.
Rosemary can be maintained by dividing the roots every three to five years. This will allow more rosettes to develop if you want, but eventually all divided plants will die back to the ground unless protected otherwise. If left undisturbed, rosemary will spread by underground rhizomes and will not need dividing. However, if you want to remove old plants or try something different, divide your rosemaries when they are about 30 inches tall. The pieces with two or more leaves should be separated enough to grow on their own but not so far apart that they will not re-sprout once planted.
Some people claim that rubbing a fresh sprig of rosemary against any part of the body brings good health. It is also said to protect against evil spirits. Although this is not scientifically proven, it is believed that certain chemicals found in the herb have antiseptic properties.
There are several varieties of rosemary. "Fantasy" has dark green foliage and pink flowers that attract butterflies.
To revive rosemary with root rot, increase the soil drainage, reduce the frequency of watering, and space the rosemary so that it gets more of a breeze around the leaf. When enriching the soil, check the rosemary roots and cut any damaged or slimy roots. Place the rosemary in a partially shady spot for several weeks until new growth appears.
Rosemary is one of the few herbs that can be used fresh instead of dried. Add 4 to 6 sprigs of rosemary, tied together with string, to each gallon of water and bring to a boil. Turn off the heat, cover the pot, and let stand for 30 minutes. Remove the rosemary and use in recipes that call for fresh herbs or dry them at this point for later use.
Dried rosemary has many uses and can be sprinkled onto meat as an herb seasoning or added to soups, stews, and sauces. It can also be made into tea by pouring boiling water over the leaves in a glass container and allowing it to cool before serving.
Rosemary is commonly used as a flavor additive when making cookies, cakes, and candies. It adds a piney note that goes well with chocolate and coffee.
Rosemary is a perennial plant that grows in most parts of the world except Antarctica.
Bacterial Bacterial Bacterial Bacterial Bacterial Bacterial Bacterial Bacterial Bac High humidity, little sunlight, and a lack of circulation are all factors that contribute to it. Another disease caused by fungal or bacterial infections is leaf spot. Brownish black patches form on the stems, and they wilt. Avoid watering plants from above. The water should be drizzled onto the soil, not poured directly onto the plant. This will help prevent the buildup of excess moisture at one place on the plant, which can lead to root rot.
Rosemary is very sensitive to cold temperatures and will die if the air temperature dips below 20 degrees F. However, if you protect it with a greenhouse or patio tent, it can be kept growing during cold weather.
If you see brown droppings around the base of the plant that do not disappear even after washing the plant, this is evidence of fungus gnats feeding on the leaves. They can be removed from the plant by placing it in a plastic bag and shaking it vigorously. If this does not dislodge them, then cover the plant with insecticidal soap. The fungus gnat will come into contact with the soap and should drop off within an hour. Be sure to wash your hands after handling the plant.
To grow more rosesmary, divide the roots in half and plant each division in its own bowl of soil. This will allow you to replace any damaged or dead parts of the plant without destroying the rest of it.