Usually during the coldest periods of the year the aerial part of these plants dries; it will begin to develop again the spring after. Plant which need at least a few hours a day of solar light.The Cleft phlox bears even very harsh temperatures, therefore it can be grown outdoors without feeling endangered by low temperatures.
Fertilize Cleft phlox
In the spring let’s remember to fertilize our perennial plants, using a slow release granular fertilizer, to add in one solution every 3-4 months. If desired we can also use a liquid fertilizer for flowering plants, to mix with the irrigation water every 20-25 days.
Cultivation Cleft phlox
Growing they develop a round-shape shrub. The Cleft phlox should be used for rock gardens, This plant in the summer assumes a purple colouring; it is small in size and can reach 15 cm high. It keeps its leaves in the winter.
Water Cleft phlox
We suggest watering these plants with 2-3 glasses of water only when the soil is perfectly dry, generally it needs to be watered about every 1-2 weeks . Let's avoid to exceed. Generally during the period of vegetatational rest it isn't necessary to water our perennial plants, which in many cases lose their aerial part.
Pests Cleft phlox
The spring weather, with a high temperature swing between the day and night hours, and pretty frequent rains, can favour the development of fungus diseases, which should be treated pre-emptively with a systemic fungicide, to use before the gems grow excessively; at the end of the winter we also suggest a wide range insecticide to prevent the attack of aphids and cochineals. We should always remember to do these treatments when there aren't flowerings in the garden.
Mold Cleft phlox
Grow these perennial plants in a very well drained substratum.
Plant Cleft phlox
Seeing the quite contained development it’s possible to grow these plants in a container. The indications given in this article are related to a medium size plant.