The Petrocosmea kerrii needs a minimum temperature superior to 15°C, during this time of the year it is best to check the night temperatures before setting it outside. Usually during the coldest periods of the year the aerial part of these plants dries; it will begin to develop again the spring after.These plants don't like direct solar rays which could ruin their foliage; we therefore suggest to locate them in shady places.
Generalities Petrocosmea kerrii
The Petrocosmea kerrii should be used for rock gardens, This plant in the summer assumes a white colouring; it is small in size and can reach 5 cm high. It keeps its leaves in the winter. The development of the the Petrocosmea kerrii is
Fertilization Petrocosmea kerrii
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.
Watering Petrocosmea kerrii
We suggest watering these plants only from time to time, but we must remember to wet the soil deeply using 2-3 glasses of water every 1-2 weeks . Generally during the period of vegetatational rest it isn't necessary to water our perennial plants, which in many cases lose their aerial part.
Treatments Petrocosmea kerrii
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.
Soil Petrocosmea kerrii
Grow these perennial plants in a very well drained substratum.
Notes Petrocosmea kerrii
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.