This "trouble" always coincides with a prolonged dry and hot weather. If plants do not help at the right time, the Phlox will not give their aromatherapy and flowering, and just get dry.
The causes of yellowing and dropping leaves of Phlox
Growing plants, many growers do not delve into the details of their green Pets. Some just planted flowers and happily forgot about them. Phlox though, and belong to the perennial undemanding plants, but sometimes they need very little care. Yellowing leaves is a plea for help. In this situation we only need the flowers "drink" water.
Phlox have a superficial root system, which is located in a 15-cm layer. The roots can't reach the life-giving water from deeper soil layers. The second point: the Phlox are another feature. They have growth buds are also formed in the surface layer. Youth, growing up, begins to push the "older generation". Now the nutrition and moisture needed for a double.
How to help Phlox
Glaze - a must at the onset of dry and hot weather. Watering plants in the evening, making at least 15-20 liters of water per 1 sq. m.
Mulching is also required. This is done in order to retain moisture and prevent overheating of the root system. And mulching with compost is more and more food.
After each irrigation or rain is necessary to carefully loosen the top layer of soil, at the same time freeing the plants of weeds.
What to do to Phlox bloomed
As Phlox paniculata annually grow and begin to "bulge" from the earth, it is their regular seat. You should not plant Phlox in the sun.
These perennials do not like dense planting. They are well in bloom and get sick less fungal diseases in windier environments.
Without irrigation, plants remain "dwarfs", the inflorescence they are shrinking. High grade better to tie up to a strong wind plants are not uprooted from the earth.