How to Grow Scarlet Sage (Salvia splendens)? A Complete Guide to Planting Techniques and Precautions

The name "scarlet sage" is quite distinctive, and linking this name with the scarlet sage plant does not feel strange at all; instead, it feels perfectly apt. Why is that? Because the flowers of scarlet sage are arranged in strings, like candied haws on a stick.

How to Grow Scarlet Sage

1. Sunlight: Scarlet sage is a sun-loving flower, and the growing site must have ample light, which is very beneficial to its growth and development. If light is insufficient, the plant tends to grow leggy, with slender stems and leaves and pale green foliage; if exposed to poor light for a long time, the leaves turn yellow and drop. If flowering plants are placed in a location with poor light, the flowers are often less vivid in color and prone to dropping. It is sensitive to photoperiod, and short days promote the blooming of scarlet sage.

2. Temperature: Scarlet sage is quite sensitive to temperature. Seeds germinate at 21-23 degrees; below 15°C germination is very difficult, and below 20°C germination is uneven. During the seedling stage, 7-13°C is suitable in winter, and 13-18°C is best during the growing period from March to June. When the temperature exceeds 30°C, the plant's growth and development are hindered, and the flowers and leaves become smaller. Therefore, during the high-temperature period in summer, cooling or appropriate shading is needed to control the normal growth of scarlet sage. Being kept at a low temperature of 5°C for a long time makes it prone to cold damage.

3. Pruning: After scarlet sage is planted out, it should be pinched back immediately, and during the growing period it should be pinched back at least 2 times, so that the plant becomes short and sturdy, with more flowering branches and denser flower spikes.

4. Pests: When growing scarlet sage, if there is high temperature, high humidity or insufficient light, it is prone to rot disease, so temperature must be regulated to keep the air circulating. In addition, scarlet sage is prone to pests such as red spiders and aphids, which can be controlled by spraying a 1500-fold dilution of omethoate emulsion.

5. Fertilizing: Scarlet sage is relatively simple in terms of fertilizer. Generally speaking, as long as basic fertilizing is done on the planting soil, it is enough.

Scarlet Sage Planting Techniques and Precautions

1. Control light and temperature

After scarlet sage is planted, place it in a shady spot for 3 days to recover from transplanting. Then place it in sunlight to ensure ample light. To make it easier to control light intensity, a simple frame can be built above the flower pot. When the light is too strong, especially at noon in summer, shade it by 50%. Once it is in a low-temperature condition, plastic film should be put on for appropriate insulation, which can usually be done at night or on rainy days.

2. Maintain water and humidity

Scarlet sage likes a moist environment and should be sprayed with water once a day, except on rainy days. When watering, the difference between soil temperature and water temperature must not exceed 5°C. When the temperature is relatively high, spray water into the surrounding environment frequently to lower the temperature and increase air humidity. Clean the branches and leaves regularly to improve photosynthesis, once every 15-20 days.

3. Mainly foliar topdressing

Soil provides an important guarantee for the growth and development of flowers, but to ensure robust plant growth, the little water, fertilizer and air in the soil are far from enough, and foliar fertilizer also needs to be applied. The specific method is as follows:

One week after potting, apply foliar fertilizer once. Then use a sprayer to spray once a day for the next three days. For the fertilizer, choose a mixture of urea plus monopotassium phosphate and a small amount of calcium superphosphate. Choose early morning and evening for spraying.

For subsequent care, combine watering with fertilizing, and carry out foliar fertilizing 8-12 hours after watering. Note that on windy days or when light is strong, it can be applied around the plant.

4. Control the flowering date

Sowing in different seasons results in different flowering times. Sown in spring, it blooms in autumn; sown in a greenhouse in autumn, it blooms in April-May of the following year. During the flowering period, the following methods can be used to control the flowering period:

Cut off the branch tips with flower buds in time, which can appropriately delay the flowering period.

After each bloom fades, remove the spent flowers in time and strengthen water and fertilizer management; scarlet sage can send out new branches and bloom again, extending the flowering period. And 5. Timely pruning and pinching

After potted scarlet sage survives transplanting, it needs to be pinched back 3 times to inhibit its growth and promote the sprouting of side buds. The plants grown this way are short and sturdy, with more flower heads.

The Value and Uses of Scarlet Sage

Ornamental value: When scarlet sage blooms, it puts out dense patches of brilliant red, very festive, and especially suitable as a decoration during important festivals. It can also be kept as a potted plant at home, adding a touch of "passionate" vitality.

Medicinal value: The whole herb of scarlet sage can be used as medicine after being harvested during its growing period, and can be used either dried or fresh. It has good effects in clearing heat and reducing swelling and in cooling the blood and removing sores; applying mashed scarlet sage to boils can bring its effects into play.

The Flowering Period of Scarlet Sage

Scarlet sage blooms in a fiery red, and is a relatively common festival flower with a very long ornamental period; usually it can bloom from summer to autumn. Under natural conditions, the flowering period of scarlet sage is from May to November, but with reasonable control during cultivation, scarlet sage can have flowers in all four seasons.

When growing scarlet sage, attention should be paid to its growth habits so as to create a suitable living environment. In the process of growing scarlet sage, attention should be paid not only to light, heat, water and soil, but also to controlling its flowering period, so that scarlet sage can bloom in the suitable season without affecting its normal growth.