The Perovskia atriplicifolia loves the sun and it is advisable to set it in a sunny place, or in a place where it enjoys at least 4-6 hours of direct sunlight a day; these plants don’t fear the cold, even if it can happen that very harsh winters cause the complete drying up of the aerial part, usually then the plant develops without any problems with the spring heat.
For the youngest and most sensitive plants, it is advisable to protect them in case of particularly cold and rigid winters, covering the surrounding soil with straw and dry leaves that mitigate the winter rigour.
To keep the shrub more compact and dense it is advisable to cut the plants up to 15-20 cm from the ground, in January-February.
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The perovskia are rather rustic and resistant shrubs and do not need very frequent watering; in fact, they can also manage without problems even prolonged periods of drought. Usually, during the spring months, they can be satisfied with the rains, as they need sporadic watering during the summer months, especially in dry periods or with very high temperatures.
Of course, if they are planted in pots, then they will require a greater quantity of water.
This type of plant is also grown in the common garden earth, however prefers sandy soils, very well drained, with a good amount of organic material.
The important thing is that the earth does not retain too much water, because the stagnation of water is rather dangerous for his health.
It is good to check that the soil allows proper drainage, otherwise it is very easy to run into problems related to the onset of mold or a root rot that can cause the plant to die.
The multiplication of this type of plant takes place by seed, in spring, or by semi-woody cutting in summer, taking the cuttings from the stems which have not produced flowers. The new seedlings will have to be left for a little time at the reopening, before being transplanted in the ground.
Perovskia atriplicifolia: Parasites and diseases
Perovskia atriplicifolia is a rather rustic and resistant plant, not subject to parasites and diseases; it is occasionally attacked by aphids. In this case it is possible to proceed with an intervention based on specific products that effectively counteract the problem, they can be chemical, commonly available on the market, or natural as, for example, a preparation made by boiling garlic inside the water that will then be sprayed directly on the plants.