What effects does the balcony environment have on flower growing?

If you grow many different flowers on your balcony, do you know how to grow flowers well on your own balcony? On this point, the balcony environment is very important. The balcony environment includes temperature, light and so on.
What effects the balcony environment has on flower growing.
1. Light
Most balconies protrude beyond the main structure of the building, hanging in the air at the front and on both sides and directly exposed to the air, receiving sunlight, so their light is more abundant than indoors. With different balcony orientations and different heights, the degree of light received differs. A south-facing balcony receives the longest light duration, the strongest radiation and the best light quality, and the higher the floor, the more so, which is favorable for the growth of sun-loving flowers and makes their flower bud differentiation good, their fragrance rich and their flower colors vivid; the light duration of a north-facing balcony is only about 1/2 that of a south-facing balcony, and the light quality is poor and the light is weaker, especially on lower-floor balconies, making it suitable for caring for flowers that love shade or are strongly shade-tolerant. Regardless of the orientation of the balcony, the light received is mostly side light, which easily causes flowers that are not moved often to bend toward the light and have an unattractive form.
2. Temperature
The balcony receives light for a long time and the light is strong, but because of its reinforced concrete structure, it absorbs a lot of heat during the day, warms up quickly and is relatively rich in heat. At night the opposite is true: it dissipates heat quickly, cools down quickly and the temperature is lower, which leads to a relatively large temperature difference between day and night on the balcony, and the higher the floor, the more pronounced this is. With different orientations, the temperature difference also differs. A south-facing balcony absorbs more heat during the day than a north-facing balcony, but because there is a north wall blocking the cold wind from coming south, at night it dissipates heat more slowly than a north-facing balcony, so a south-facing balcony is suitable for growing heat-loving flowers, while a north-facing balcony is suitable for growing flowers that love heat but fear high temperatures. A north-facing balcony easily causes cold damage to flowers, and the higher the floor, the greater the effect; cold damage on a south-facing balcony is relatively lighter, and the lower the floor, the smaller the effect, so in winter heat-loving flowers should be placed on a south-facing balcony to overwinter.
3. Air
Because the balcony is directly exposed to the air, the air circulates and ventilation is good, providing enough energy for flowers to carry out photosynthesis. However, because there is much wind, strong wind and high wind pressure on the balcony, especially on a high-floor north-facing balcony, the stems and flowering branches of flowers are easily damaged and broken, so it is only suitable for planting flowers with a small crown width, short plants and strong wind resistance. At the same time, strong wind will speed up the evaporation of water, easily causing flowers to lose water and the potting soil to become too dry, resulting in yellowing and wilting of the leaves of foliage plants.
4. Humidity
Because of the reinforced concrete structure of the balcony, it has no function of storing or transporting water, and there is no groundwater supply, and natural precipitation is also small in amount because it is blocked by the roof slab. In addition, its evaporation is large, so the air humidity on the balcony is relatively low and the climate environment is relatively dry. If the water supply is insufficient, it is easy for flowers to suffer from dry potting soil and lack of water due to excessively low humidity, and thus die of drought.