Care Methods and Tips for Potted Salvia (Scarlet Sage)

Salvia prefers warmth, humidity and plenty of sunlight, with an optimum growth temperature of 20-25°C. Therefore, potted care should mainly focus on a few key points in order to achieve rapid cultivation.

1. Control light and temperature. After potting, the plants need at least 3 days of shading to recover, then the shading material should be gradually removed to provide enough light. To make it easier to control light and temperature more effectively during care, a simple frame can be temporarily set up one meter above the potted flowers.

If the light is too strong or the temperature is on the high side, cover with 50% shade netting for timely shading, especially at midday in summer; once low temperatures occur, switch to agricultural plastic film for appropriate insulation, generally at night or during overcast and rainy weather.

2. Maintain moisture and humidity. After potting, water should generally be sprayed once a day (except on overcast and rainy days). When watering, the difference between soil temperature and water temperature should preferably not exceed 5°C. Where conditions allow, automatic sprinkler heads can be installed for sprinkler irrigation, which helps lower air temperature, increase air humidity, clean the branches and leaves, and improve the efficiency of photosynthesis.

3. Focus on foliar feeding. The carefully prepared potting soil provides the water, nutrients and air needed for flower growth and development. To accelerate flower growth and shorten the cultivation period, foliar feeding is also needed.

One week after potting, the first foliar feeding can be carried out, and thereafter once every three days with a sprayer. The fertilizer is made by mixing 0.1% urea with 0.1% monopotassium phosphate and a small amount of superphosphate. Spraying is generally best in the early morning and evening, and should be done 8-12 hours before or after watering. Do not spray on windy days or when the sunlight is too strong; delay it instead.

4. Continue until about 20 days before the intended full bloom period, then stop. After each pinching and bud removal, combine foliar feeding with a spray of 30-50 PPM gibberellic acid, which can promote side branch growth, produce more side branches, increase the number of flower spikes, and bring buds out earlier for earlier blooming. Enter bloom-period care as early as possible.

Bloom-period care: After 20-25 days of potted care, salvia basically reaches a good state of lush branches and leaves with neat side branches, and can then be switched to bloom-period care accordingly. During this period, besides necessary pruning, pinching and bud removal should be stopped.

Water, fertilize and loosen the soil carefully to prevent damage to the flowering branches. Do not move the pots around at will. Remove the shading material to give the potted flowers more sufficient sunlight, which helps the buds open. The amount of watering should be appropriately reduced, following the principle of watering when dry and withholding when wet. Foliar feeding should be changed to once every 5-7 days, mainly with 0.1% monopotassium phosphate. Never apply nitrogen-containing fertilizers such as urea, and certainly do not use any growth regulators again. During flowering, prevent heavy rain from washing away and damaging the flower spikes. After 15-20 days of bloom-period care, full bloom can be achieved.