How to grow rosemary? Detailed guide to cultivation methods and precautions

1. Light and temperature.

Rosemary likes a warm and suitable environment. In the south it can be grown year-round, while in the north it is mostly grown in pots, which makes it easier to move indoors in winter to keep warm. Rosemary likes sunlight and needs no less than 8 hours of sunlight per day. In summer, when temperatures are high, it can be shaded appropriately.

2. Soil.

Rosemary grows well in slightly alkaline soil. When planting, you can add some quicklime to acidic soil to make it suitable for rosemary growth, and the more alkaline the soil, the stronger the fragrance of rosemary.

3. Watering.

Rosemary is relatively drought-tolerant. When watering, water only when the soil is dry, generally once every two days, watering thoroughly each time. In winter, reduce watering to enhance cold resistance and prevent freezing.

4. Fertilizing.

Rosemary has low fertilizer requirements and is relatively tolerant of poor soil. Generally, herb plants do not need fertilizing. During the growing season, nitrogen and phosphorus fertilizers can be applied in appropriate amounts as needed to promote growth.

5. Pruning.

To maintain the shape of potted plants, rosemary can be pruned three months after it has successfully taken root. Generally, prune overly dense and overly long branches, and promptly prune dead and diseased branches. This ensures ventilation and air circulation, allowing the plant to grow healthily.

The above is an introduction to rosemary cultivation methods. Below, the editor will explain pest and disease control for rosemary in home care.

How to grow rosemary

Rosemary is a common herb, and rosemary is usually not difficult to grow. Once it takes root, it can thrive for many years. In this article, we look at how to grow rosemary. Rosemary is a very good potted plant; growing it in pots can solve the problem of very cold climates, and the pot can be brought indoors in winter.

Rosemary, this fragrant herb, likes a mild climate. In the south it can be grown outdoors year-round, while in the north it must be moved indoors in winter or other insulation measures must be taken. Its growth rate is not fast, far slower than mint and basil. Rosemary requires at least 8 hours of direct sunlight per day, and moderate watering (it should be watered somewhat sparingly). A mature plant can be watered thoroughly once every 4 to 7 days.

Rosemary likes slightly alkaline soil. If the soil is relatively acidic, you can dissolve quicklime and pour the lime slurry directly onto the flowers; rosemary can tolerate it. If you are not confident, you can mix it into the soil, leave it for several days, and then use it for repotting. If you do not have quicklime, the desiccant in foods such as Wang Wang Senbei is lime. Reference dosage: one packet mixed into a 1-gallon pot.

Rosemary grows quickly in spring and autumn, and slightly slowly in severe cold and extreme heat. Sufficient light must be ensured, but in summer attention should be paid to shading. Rosemary is relatively drought-tolerant; water when the soil is completely dry. Water less in winter and pay attention to preventing freezing. In summer, generally water once every two days.

If planting in a garden, please choose soil with good drainage. Waterlogged soil will cause rosemary to suffer from root rot. The more alkaline the soil, the more fragrant the rosemary. If the soil is too acidic, some lime can be buried in the soil.

Regarding fertilizing rosemary,do not worry about fertilizing. Herb plants do not need fertilizing. However, please make sure the soil contains some lime.

How to grow rosemary, rosemary cultivation and propagation methods

Rosemary likes a warm and humid environment. It grows slowly at higher temperatures, and grows faster in winter when the weather is clear and there is no cold snap. Rosemary has many leaves, which are leathery, so it is relatively drought-tolerant. Keeping the soil slightly moist can meet its water needs. However, the soil for planting should be chosen with good drainage, which is more conducive to its growth.

Rosemary is a type of herb and likes a cool, dry environment. The flower pot is very important for its growth. Unglazed clay pots have the best breathability and can be given priority consideration. As for pot size, one with a diameter of about 20 cm is fine. If it is too large, the amount of watering is hard to control, and since rosemary grows slowly, it does not need too much growing space.

As for soil, ordinary garden soil is enough. Before planting, add a small amount of fertilizer to the soil.

Fertilizing two or three times a year is about enough. Use decomposed organic fertilizer and place it in the soil at the edge of the flower pot. Applying light fertilizer frequently is also fine; the amount of fertilizer used at one time does not need to be too much. Fertilize appropriately according to the plant's growth condition.

As for watering, in summer it needs more watering. Generally, when summer temperatures are high, do not water at noon; water once each in the morning and evening. In other seasons, generally water once a week. During care, water according to the condition of the potting soil; if it is dry and whitish, it needs watering.

Rosemary is a relatively cold-tolerant plant. In winter it can be placed on a semi-enclosed balcony to overwinter; around -5°C is no problem. So in winter there is no need to take insulation measures, and it still will not freeze to death. But if the winter temperature in your area is below -10°C, it is still recommended to move it indoors. Summer temperatures are relatively high, so ventilation and cooling should be done promptly to promote its growth.

Actually, gardeners water based on experience. Gardeners growing rosemary for the first time need to note that in summer, although more watering is needed when temperatures are high, you must not water heavily, as the plant can easily wilt and growth will slow. In addition, perennial plants can also show this situation if watering is improper.

After rosemary blooms, a sufficient amount of fertilizer needs to be applied to promote longer-lasting blooming, but it is best not to use chemical fertilizers to avoid fertilizer burn. For ordinary home growing, you can also water with a little fermented rice water.

In humid environments, root rot, gray mold, and other diseases are common diseases of rosemary. If the rosemary plant wilts while the growing medium is still moist, the plant needs to be moved out of the greenhouse immediately. The most common pests are red spider mites and whiteflies. At present, the most ideal method is to use biological control.

Propagation methods suitable for rosemary include sowing, cuttings, layering, and so on. Rosemary seeds germinate slowly and have a low germination rate, so they are usually used only when introducing new varieties. During the rooting period, the suitable temperature in the greenhouse is 22°C, and the cuttings need to be misted frequently, but excessive moisture will cause the tops of the cuttings to rot, and the roots produced will not be strong enough. In the first 10 to 14 days, the cuttings begin to take root, and special attention must be paid to preventing the cuttings from wilting.